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class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown 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mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 12 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-12" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">12 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Zstandard" title="Zstandard – Czech" lang="cs" hreflang="cs" data-title="Zstandard" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Zstandard" title="Zstandard – German" lang="de" hreflang="de" data-title="Zstandard" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/Zstd" title="Zstd – Persian" lang="fa" hreflang="fa" data-title="Zstd" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Zstandard" title="Zstandard – French" lang="fr" hreflang="fr" data-title="Zstandard" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Zstd" title="Zstd – Italian" lang="it" hreflang="it" data-title="Zstd" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/Zstandard" title="Zstandard – Japanese" lang="ja" hreflang="ja" data-title="Zstandard" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Zstandard" title="Zstandard – Portuguese" lang="pt" hreflang="pt" data-title="Zstandard" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/Zstandard" title="Zstandard – Russian" lang="ru" hreflang="ru" data-title="Zstandard" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%B2%D8%B3%D8%AA%D8%AF" title="زستد – Central Kurdish" lang="ckb" hreflang="ckb" data-title="زستد" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Zstd" title="Zstd – Finnish" lang="fi" hreflang="fi" data-title="Zstd" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Zstd" title="Zstd – Ukrainian" lang="uk" hreflang="uk" data-title="Zstd" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/Zstandard" title="Zstandard – Chinese" lang="zh" hreflang="zh" data-title="Zstandard" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q26737171#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li 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class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Zstd&oldid=1251546503" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Zstd&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Zstd&id=1251546503&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FZstd"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FZstd"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Zstd&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Zstd&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q26737171" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Lossless compression algorithm</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">".zst" redirects here. For the game console emulator also using this file extension, see <a href="/wiki/ZSNES" title="ZSNES">ZSNES</a>.</div> <p class="mw-empty-elt"> </p> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vevent"><caption class="infobox-title summary">Zstandard</caption><tbody><tr><td colspan="2" class="infobox-image logo"><span typeof="mw:File"><a href="/wiki/File:Zstandard_logo.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Zstandard_logo.png/110px-Zstandard_logo.png" decoding="async" width="110" height="106" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Zstandard_logo.png/165px-Zstandard_logo.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Zstandard_logo.png/220px-Zstandard_logo.png 2x" data-file-width="234" data-file-height="226" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Original author(s)</a></th><td class="infobox-data">Yann Collet</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data">Yann Collet, Nick Terrell, Przemysław Skibiński<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">23 January 2015<span style="display:none"> (<span class="bday dtstart published updated itvstart">2015-01-23</span>)</span></td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">1.5.6<sup id="cite_ref-wikidata-9624be71aadd06ac67df0d94a95711ec231c8c14-v18_2-0" class="reference"><a href="#cite_note-wikidata-9624be71aadd06ac67df0d94a95711ec231c8c14-v18-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q26737171?uselang=en#P348" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span> / 27 March 2024<span class="noprint">; 7 months ago</span><span style="display:none"> (<span class="bday dtstart published updated">27 March 2024</span>)</span></div></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Repository_(version_control)" title="Repository (version control)">Repository</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span class="url"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd.git">github<wbr />.com<wbr />/facebook<wbr />/zstd<wbr />.git</a></span> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q26737171#P1324" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></li></ul> </div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="/wiki/C_(programming_language)" title="C (programming language)">C</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="/wiki/Cross-platform" class="mw-redirect" title="Cross-platform">Cross-platform</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data">Portable</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="/wiki/Data_compression" title="Data compression">Data compression</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="/wiki/BSD_licenses#3-clause_license_("BSD_License_2.0",_"Revised_BSD_License",_"New_BSD_License",_or_"Modified_BSD_License")" title="BSD licenses">BSD-3-Clause</a> or <a href="/wiki/GNU_General_Public_License#Version_2" title="GNU General Public License">GPL-2.0-or-later</a> (dual-licensed)</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://facebook.github.io/zstd/">facebook<wbr />.github<wbr />.io<wbr />/zstd<wbr />/</a></span> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q26737171?uselang=en#P856" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr></tbody></table> <p><b>Zstandard</b> is a <a href="/wiki/Lossless_compression" title="Lossless compression">lossless</a> <a href="/wiki/Data_compression" title="Data compression">data compression</a> algorithm developed by Yann Collet at <a href="/wiki/Facebook" title="Facebook">Facebook</a>. <b>Zstd</b> is the corresponding <a href="/wiki/Reference_implementation" title="Reference implementation">reference implementation</a> in <a href="/wiki/C_(programming_language)" title="C (programming language)">C</a>, released as <a href="/wiki/Open-source_software" title="Open-source software">open-source software</a> on 31 August 2016.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Features">Features</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Zstd&action=edit&section=1" title="Edit section: Features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Zstandard was designed to give a <a href="/wiki/Data_compression_ratio" title="Data compression ratio">compression ratio</a> comparable to that of the <a href="/wiki/DEFLATE" class="mw-redirect" title="DEFLATE">DEFLATE</a> algorithm (developed in 1991 and used in the original <a href="/wiki/Zip_(file_format)" class="mw-redirect" title="Zip (file format)">ZIP</a> and <a href="/wiki/Gzip" title="Gzip">gzip</a> programs), but faster, especially for decompression. It is tunable with compression levels ranging from negative 7 (fastest)<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> to 22 (slowest in compression speed, but best compression ratio). </p><p>Starting from version 1.3.2 (October 2017), zstd optionally implements very long range search and deduplication (<code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">--long</code>, 128 MiB window) similar to <a href="/wiki/Rzip" title="Rzip">rzip</a> or <a href="/wiki/Lrzip" class="mw-redirect" title="Lrzip">lrzip</a>.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>Compression speed can vary by a factor of 20 or more between the fastest and slowest levels, while decompression is uniformly fast, varying by less than 20% between the fastest and slowest levels.<sup id="cite_ref-openzfs_7-0" class="reference"><a href="#cite_note-openzfs-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The Zstandard command-line has an "adaptive" (<code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">--adapt</code>) mode that varies compression level depending on I/O conditions, mainly how fast it can write the output. </p><p><i>Zstd</i> at its maximum compression level gives a compression ratio close to <a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm" title="Lempel–Ziv–Markov chain algorithm">lzma</a>, <a href="/wiki/LZHAM" class="mw-redirect" title="LZHAM">lzham</a>, and <a href="/wiki/Prediction_by_partial_matching#PPMX" title="Prediction by partial matching">ppmx</a>, and <span class="failed-verification-content" style="padding-left:0.1em; padding-right:0.1em; color:var(--color-subtle, #54595d); border:1px solid var(--border-color-subtle, #c8ccd1);">performs better<sup class="noprint Inline-Template" style="margin-left:0.1em; white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Vagueness" title="Wikipedia:Vagueness"><span title="This information is too vague. (January 2023)">vague</span></a></i>]</sup> than <a href="/wiki/LHA_(file_format)" title="LHA (file format)">lza</a> or <a href="/wiki/Bzip2" title="Bzip2">bzip2</a>.</span><sup class="noprint Inline-Template Template-Fact" style="margin-left:0.1em; white-space:nowrap;">[<i><a href="/wiki/Wikipedia:No_original_research#Synthesis_of_published_material" title="Wikipedia:No original research"><span title="The material highlighted using this tag may be based upon an improper synthesis of sources. (January 2023)">improper synthesis?</span></a></i>]</sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Zstandard reaches the current <a href="/wiki/Pareto_frontier" class="mw-redirect" title="Pareto frontier">Pareto frontier</a>, as it decompresses faster than any other currently available algorithm with similar or better compression ratio.<sup id="cite_ref-web-compression_10-0" class="reference"><a href="#cite_note-web-compression-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-silesia-benchmark_11-0" class="reference"><a href="#cite_note-silesia-benchmark-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>Dictionaries can have a large impact on the compression ratio of small files, so Zstandard can use a user-provided compression dictionary. It also offers a training mode, able to generate a dictionary from a set of samples.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> In particular, one dictionary can be loaded to process large sets of files with redundancy between files, but not necessarily within each file, e.g., <a href="/wiki/Log_files" class="mw-redirect" title="Log files">log files</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Design">Design</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Zstd&action=edit&section=2" title="Edit section: Design"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Zstandard combines a dictionary-matching stage (<a href="/wiki/LZ77" class="mw-redirect" title="LZ77">LZ77</a>) with a large search window and a fast <a href="/wiki/Entropy_encoding" class="mw-redirect" title="Entropy encoding">entropy-coding</a> stage. It uses both <a href="/wiki/Huffman_coding" title="Huffman coding">Huffman coding</a> (used for entries in the Literals section)<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> and finite-state entropy (FSE) - a fast tabled version of ANS, <a href="/wiki/Asymmetric_numeral_systems#Tabled_variant_(tANS)" title="Asymmetric numeral systems">tANS</a>, used for entries in the Sequences section. Because of the way that FSE carries over state between symbols, decompression involves processing symbols within the Sequences section of each block in reverse order (from last to first). </p> <div class="mw-heading mw-heading2"><h2 id="Usage">Usage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Zstd&action=edit&section=3" title="Edit section: Usage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><caption class="infobox-title" style="padding-bottom:0.15em;">Zstandard</caption><tbody><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;"><a href="/wiki/Filename_extension" title="Filename extension">Filename extension</a></th><td class="infobox-data" style="line-height:1.35em;"><style data-mw-deduplicate="TemplateStyles:r886049734">.mw-parser-output .monospaced{font-family:monospace,monospace}</style><div class="monospaced"> .zst<sup id="cite_ref-RFC8878_15-0" class="reference"><a href="#cite_note-RFC8878-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup></div></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;"><a href="/wiki/Media_type" title="Media type">Internet media type</a></th><td class="infobox-data" style="line-height:1.35em;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886049734"><div class="monospaced"> application/zstd<sup id="cite_ref-RFC8878_15-1" class="reference"><a href="#cite_note-RFC8878-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup></div></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;"><a href="/wiki/File_format#Magic_number" title="File format">Magic number</a></th><td class="infobox-data" style="line-height:1.35em;"><code>28 b5 2f fd</code><sup id="cite_ref-RFC8878_15-2" class="reference"><a href="#cite_note-RFC8878-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;">Type of format</th><td class="infobox-data" style="line-height:1.35em;"><a href="/wiki/Data_compression" title="Data compression">Data compression</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;"><a href="/wiki/International_standard" title="International standard">Standard</a></th><td class="infobox-data" style="line-height:1.35em;"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><a href="/wiki/RFC_(identifier)" class="mw-redirect" title="RFC (identifier)">RFC</a> <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc8878">8878</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;">Website</th><td class="infobox-data" style="line-height:1.35em;"><span class="url"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md">github<wbr />.com<wbr />/facebook<wbr />/zstd<wbr />/blob<wbr />/dev<wbr />/doc<wbr />/zstd<wbr />_compression<wbr />_format<wbr />.md</a></span></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><caption class="infobox-title" style="padding-bottom:0.15em;">Zstandard Dictionary</caption><tbody><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;"><a href="/wiki/Media_type" title="Media type">Internet media type</a></th><td class="infobox-data" style="line-height:1.35em;">application/zstd</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;"><a href="/wiki/File_format#Magic_number" title="File format">Magic number</a></th><td class="infobox-data" style="line-height:1.35em;"><code>37 a4 30 ec</code><sup id="cite_ref-RFC8878_15-3" class="reference"><a href="#cite_note-RFC8878-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;"><a href="/wiki/International_standard" title="International standard">Standard</a></th><td class="infobox-data" style="line-height:1.35em;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/RFC_(identifier)" class="mw-redirect" title="RFC (identifier)">RFC</a> <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc8878">8878</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.2em; padding-right:0.65em;">Website</th><td class="infobox-data" style="line-height:1.35em;"><span class="url"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md#dictionary-format">github<wbr />.com<wbr />/facebook<wbr />/zstd<wbr />/blob<wbr />/dev<wbr />/doc<wbr />/zstd<wbr />_compression<wbr />_format<wbr />.md<wbr />#dictionary-format</a></span></td></tr></tbody></table> <p>The <a href="/wiki/Linux_kernel" title="Linux kernel">Linux kernel</a> has included Zstandard since November 2017 (version 4.14) as a compression method for the <a href="/wiki/Btrfs" title="Btrfs">btrfs</a> and <a href="/wiki/Squashfs" class="mw-redirect" title="Squashfs">squashfs</a> filesystems.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>In 2017, Allan Jude integrated Zstandard into the <a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a> kernel,<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> and it was subsequently integrated as a compressor option for core dumps (both user programs and kernel panics). It was also used to create a proof-of-concept <a href="/wiki/OpenZFS" title="OpenZFS">OpenZFS</a> compression method<sup id="cite_ref-openzfs_7-1" class="reference"><a href="#cite_note-openzfs-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> which was integrated in 2020.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/AWS_Redshift" class="mw-redirect" title="AWS Redshift">AWS Redshift</a> and <a href="/wiki/RocksDB" title="RocksDB">RocksDB</a> databases include support for field compression using Zstandard.<sup id="cite_ref-Redshift_21-0" class="reference"><a href="#cite_note-Redshift-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </p><p>In March 2018, <a href="/wiki/Canonical_(company)" title="Canonical (company)">Canonical</a> tested<sup id="cite_ref-ubuntudeb_22-0" class="reference"><a href="#cite_note-ubuntudeb-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> the use of zstd as a <a href="/wiki/Deb_(file_format)" title="Deb (file format)">deb package</a> compression method by default for the <a href="/wiki/Ubuntu_(operating_system)" class="mw-redirect" title="Ubuntu (operating system)">Ubuntu</a> Linux distribution. Compared with <a href="/wiki/XZ_Utils" title="XZ Utils">xz</a> compression of deb packages, zstd at level 19 decompresses significantly faster, but at the cost of 6% larger package files. Support was added to Debian (and subsequently, Ubuntu) in April 2018 (in version 1.6~rc1).<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ubuntudeb_22-1" class="reference"><a href="#cite_note-ubuntudeb-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> </p><p>In 2018 the algorithm was published as <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/RFC_(identifier)" class="mw-redirect" title="RFC (identifier)">RFC</a> <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc8478">8478</a>, which also defines an associated <a href="/wiki/Media_type" title="Media type">media type</a> "application/zstd", <a href="/wiki/Filename_extension" title="Filename extension">filename extension</a> "zst", and <a href="/wiki/HTTP_compression" title="HTTP compression">HTTP content encoding</a> "zstd".<sup id="cite_ref-RFC8478_25-0" class="reference"><a href="#cite_note-RFC8478-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Arch_Linux" title="Arch Linux">Arch Linux</a> added support for zstd as a package compression method in October 2019 with the release of the <a href="/wiki/Pacman_(software)" class="mw-redirect" title="Pacman (software)">pacman</a> 5.2 package manager<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> and in January 2020 switched from xz to zstd for the packages in the official repository. Arch uses <code>zstd -c -T0 --ultra -20 -</code>, the size of all compressed packages combined increased by 0.8% (compared to xz), the decompression speed is 14 times faster, decompression memory increased by 50 MiB when using multiple threads, compression memory increases but scales with the number of threads used.<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> Arch Linux later also switched to zstd as default compression algorithm for mkinitcpio <a href="/wiki/Initial_ramdisk" title="Initial ramdisk">initial ramdisk</a> generator.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Fedora_(operating_system)" class="mw-redirect" title="Fedora (operating system)">Fedora</a> added ZStandard support to <a href="/wiki/RPM_Package_Manager" title="RPM Package Manager">RPM</a> in May 2018 (Fedora release 28) and used it for packaging the release in October 2019 (Fedora 31).<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> In Fedora 33, the filesystem is compressed by default with zstd.<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> </p><p>Full implementation of the algorithm with an option to choose the compression level is used in the .NSZ/.XCZ<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> file formats developed by the <a href="/wiki/Homebrew_(video_games)" title="Homebrew (video games)">homebrew</a> community for the <a href="/wiki/Nintendo_Switch" title="Nintendo Switch">Nintendo Switch</a> hybrid game console.<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> Similarly, it is also one of many supported compression algorithms in the .RVZ <a href="/wiki/Wii" title="Wii">Wii</a> and <a href="/wiki/GameCube" title="GameCube">GameCube</a> <a href="/wiki/Disk_image" title="Disk image">disc image</a> file format. </p><p>On 15 June 2020, Zstandard was implemented in version 6.3.8 of the zip file format with codec number 93, deprecating the previous codec number of 20 as it was implemented in version 6.3.7, released on 1 June.<sup id="cite_ref-zip638_36-0" class="reference"><a href="#cite_note-zip638-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-zip637_37-0" class="reference"><a href="#cite_note-zip637-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </p><p>In March 2024, <a href="/wiki/Google_Chrome" title="Google Chrome">Google Chrome</a> version 123 (and <a href="/wiki/Chromium_(web_browser)" title="Chromium (web browser)">Chromium</a>-based browsers such as <a href="/wiki/Brave_(web_browser)" title="Brave (web browser)">Brave</a> or <a href="/wiki/Microsoft_Edge" title="Microsoft Edge">Microsoft Edge</a>) added zstd support in the <a href="/wiki/HTTP_header" class="mw-redirect" title="HTTP header">HTTP header</a> <code>Content-Encoding</code>.<sup id="cite_ref-38" class="reference"><a href="#cite_note-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> In May 2024, <a href="/wiki/Firefox" title="Firefox">Firefox</a> release 126.0 added zstd support in the <a href="/wiki/HTTP_header" class="mw-redirect" title="HTTP header">HTTP header</a> <code>Content-Encoding</code>.<sup id="cite_ref-39" class="reference"><a href="#cite_note-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="License">License</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Zstd&action=edit&section=4" title="Edit section: License"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The reference implementation is licensed under the <a href="/wiki/BSD_licenses" title="BSD licenses">BSD license</a>, published at <a href="/wiki/GitHub" title="GitHub">GitHub</a>.<sup id="cite_ref-40" class="reference"><a href="#cite_note-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> Since version 1.0, it had an additional Grant of Patent Rights.<sup id="cite_ref-41" class="reference"><a href="#cite_note-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> </p><p>From version 1.3.1,<sup id="cite_ref-42" class="reference"><a href="#cite_note-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> this patent grant was dropped and the license was changed to a BSD + GPLv2 dual license.<sup id="cite_ref-43" class="reference"><a href="#cite_note-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Zstd&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/LZ4_(compression_algorithm)" title="LZ4 (compression algorithm)">LZ4 (compression algorithm)</a> – a fast member of the LZ77 family</li> <li><a href="/wiki/LZFSE" title="LZFSE">LZFSE</a> – a similar algorithm by Apple used since iOS 9 and OS X 10.11 and made open source on 1 June 2016</li> <li><a href="/wiki/Zlib" title="Zlib">Zlib</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Zstd&action=edit&section=6" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://archive.today/20210127114543/https://github.com/facebook/zstd/graphs/contributors">"Contributors to facebook/zstd"</a>. <i>github.com</i>. Archived from <a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/graphs/contributors">the original</a> on 27 January 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">26 January</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=github.com&rft.atitle=Contributors+to+facebook%2Fzstd&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Fgraphs%2Fcontributors&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-wikidata-9624be71aadd06ac67df0d94a95711ec231c8c14-v18-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-wikidata-9624be71aadd06ac67df0d94a95711ec231c8c14-v18_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/releases/tag/v1.5.6">"Release Zstandard v1.5.6 - Chrome Edition · facebook/zstd"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">27 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Release+Zstandard+v1.5.6+-+Chrome+Edition+%C2%B7+facebook%2Fzstd&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Freleases%2Ftag%2Fv1.5.6&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSergio_De_Simone2016" class="citation news cs1">Sergio De Simone (2 September 2016). <a rel="nofollow" class="external text" href="https://www.infoq.com/news/2016/09/facebook-zstandard-compression">"Facebook Open-Sources New Compression Algorithm Outperforming Zlib"</a>. InfoQ<span class="reference-accessdate">. Retrieved <span class="nowrap">20 April</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Facebook+Open-Sources+New+Compression+Algorithm+Outperforming+Zlib&rft.date=2016-09-02&rft.au=Sergio+De+Simone&rft_id=https%3A%2F%2Fwww.infoq.com%2Fnews%2F2016%2F09%2Ffacebook-zstandard-compression&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.theregister.co.uk/2016/08/31/facebook_open_source_database/">"Life imitates satire: Facebook touts zlib killer just like Silicon Valley's Pied Piper"</a>. <a href="/wiki/The_Register" title="The Register">The Register</a>. 31 August 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">6 September</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Life+imitates+satire%3A+Facebook+touts+zlib+killer+just+like+Silicon+Valley%27s+Pied+Piper&rft.date=2016-08-31&rft_id=https%3A%2F%2Fwww.theregister.co.uk%2F2016%2F08%2F31%2Ffacebook_open_source_database%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/releases/tag/v1.3.4">"Release Zstandard v1.3.4 - faster everything · facebook/zstd"</a>. <i>GitHub</i><span class="reference-accessdate">. Retrieved <span class="nowrap">27 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=Release+Zstandard+v1.3.4+-+faster+everything+%C2%B7+facebook%2Fzstd&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Freleases%2Ftag%2Fv1.3.4&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/blob/dev/programs/README.md">"Command Line Interface for Zstandard library"</a>. <i>GitHub</i>. 28 October 2021.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=Command+Line+Interface+for+Zstandard+library&rft.date=2021-10-28&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Fblob%2Fdev%2Fprograms%2FREADME.md&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-openzfs-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-openzfs_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-openzfs_7-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.open-zfs.org/w/images/b/b3/03-OpenZFS_2017_-_ZStandard_in_ZFS.pdf">"ZStandard in ZFS"</a> <span class="cs1-format">(PDF)</span>. <i>open-zfs.org</i>. 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">20 April</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=open-zfs.org&rft.atitle=ZStandard+in+ZFS&rft.date=2017&rft_id=http%3A%2F%2Fwww.open-zfs.org%2Fw%2Fimages%2Fb%2Fb3%2F03-OpenZFS_2017_-_ZStandard_in_ZFS.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMatt_Mahoney" class="citation web cs1">Matt Mahoney. <a rel="nofollow" class="external text" href="http://mattmahoney.net/dc/silesia.html">"Silesia Open Source Compression Benchmark"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">10 May</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Silesia+Open+Source+Compression+Benchmark&rft.au=Matt+Mahoney&rft_id=http%3A%2F%2Fmattmahoney.net%2Fdc%2Fsilesia.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMatt_Mahoney2016" class="citation web cs1">Matt Mahoney (29 August 2016). <a rel="nofollow" class="external text" href="http://mattmahoney.net/dc/text.html">"Large Text Compression Benchmark, .2157 zstd"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">1 September</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Large+Text+Compression+Benchmark%2C+.2157+zstd&rft.date=2016-08-29&rft.au=Matt+Mahoney&rft_id=http%3A%2F%2Fmattmahoney.net%2Fdc%2Ftext.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-web-compression-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-web-compression_10-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://sites.google.com/site/powturbo/home/web-compression"><i>TurboBench: Static/Dynamic web content compression benchmark</i></a>, PowTurbo</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=TurboBench%3A+Static%2FDynamic+web+content+compression+benchmark&rft.pub=PowTurbo&rft_id=https%3A%2F%2Fsites.google.com%2Fsite%2Fpowturbo%2Fhome%2Fweb-compression&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-silesia-benchmark-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-silesia-benchmark_11-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMatt_Mahoney" class="citation cs2">Matt Mahoney, <a rel="nofollow" class="external text" href="http://mattmahoney.net/dc/silesia.html"><i>Silesia Open Source Compression Benchmark</i></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Silesia+Open+Source+Compression+Benchmark&rft.au=Matt+Mahoney&rft_id=http%3A%2F%2Fmattmahoney.net%2Fdc%2Fsilesia.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://indico.fnal.gov/event/15154/contribution/5/material/slides/0.pdf">"Facebook developers report massive speedups and compression ratio improvements when using dictionaries"</a> <span class="cs1-format">(PDF)</span>. <i><a href="/wiki/Fermilab" title="Fermilab">Fermilab</a></i>. 11 October 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">27 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Fermilab&rft.atitle=Facebook+developers+report+massive+speedups+and+compression+ratio+improvements+when+using+dictionaries&rft.date=2017-10-11&rft_id=https%3A%2F%2Findico.fnal.gov%2Fevent%2F15154%2Fcontribution%2F5%2Fmaterial%2Fslides%2F0.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://code.facebook.com/posts/1658392934479273/smaller-and-faster-data-compression-with-zstandard/">"Smaller and faster data compression with Zstandard"</a>. Facebook. 31 August 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Smaller+and+faster+data+compression+with+Zstandard&rft.pub=Facebook&rft.date=2016-08-31&rft_id=https%3A%2F%2Fcode.facebook.com%2Fposts%2F1658392934479273%2Fsmaller-and-faster-data-compression-with-zstandard%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/blob/master/doc/zstd_compression_format.md#entropy-encoding">"facebook/zstd"</a>. <i>GitHub</i>. 28 October 2021.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=facebook%2Fzstd&rft.date=2021-10-28&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Fblob%2Fmaster%2Fdoc%2Fzstd_compression_format.md%23entropy-encoding&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-RFC8878-15"><span class="mw-cite-backlink">^ <a href="#cite_ref-RFC8878_15-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-RFC8878_15-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-RFC8878_15-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-RFC8878_15-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCollet2021" class="citation cs1">Collet, Yann (February 2021). <a href="/wiki/Murray_Kucherawy" title="Murray Kucherawy">Kucherawy, Murray S.</a> (ed.). <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc8878"><i>Zstandard Compression and the application/zstd Media Type</i></a>. Internet Engineering Task Force Request for Comments. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.17487%2FRFC8878">10.17487/RFC8878</a></span>. <a href="/wiki/Request_for_Comments" title="Request for Comments">RFC</a> <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc8878">8878</a><span class="reference-accessdate">. Retrieved <span class="nowrap">26 February</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zstandard+Compression+and+the+application%2Fzstd+Media+Type&rft.series=Internet+Engineering+Task+Force+Request+for+Comments&rft.date=2021-02&rft_id=info%3Adoi%2F10.17487%2FRFC8878&rft.aulast=Collet&rft.aufirst=Yann&rft_id=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Frfc8878&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCorbet2017" class="citation web cs1">Corbet, Jonathan (17 September 2017). <a rel="nofollow" class="external text" href="https://lwn.net/Articles/733846/">"The rest of the 4.14 merge window [LWN.net]"</a>. <i><a href="/wiki/Lwn.net" class="mw-redirect" title="Lwn.net">lwn.net</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">27 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=lwn.net&rft.atitle=The+rest+of+the+4.14+merge+window+%5BLWN.net%5D&rft.date=2017-09-17&rft.aulast=Corbet&rft.aufirst=Jonathan&rft_id=https%3A%2F%2Flwn.net%2FArticles%2F733846%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://kernelnewbies.org/Linux_4.14">"Linux_4.14 - Linux Kernel Newbies"</a>. Kernelnewbies.org. 30 December 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">16 August</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Linux_4.14+-+Linux+Kernel+Newbies&rft.pub=Kernelnewbies.org&rft.date=2017-12-30&rft_id=https%3A%2F%2Fkernelnewbies.org%2FLinux_4.14&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLarabel2017" class="citation web cs1">Larabel, Michael (8 September 2017). <a rel="nofollow" class="external text" href="https://www.phoronix.com/scan.php?page=news_item&px=Linux-4.14-Zstd-Pull">"Zstd Compression For Btrfs & Squashfs Set For Linux 4.14, Already Used Within Facebook - Phoronix"</a>. <i>www.phoronix.com</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.phoronix.com&rft.atitle=Zstd+Compression+For+Btrfs+%26+Squashfs+Set+For+Linux+4.14%2C+Already+Used+Within+Facebook+-+Phoronix&rft.date=2017-09-08&rft.aulast=Larabel&rft.aufirst=Michael&rft_id=https%3A%2F%2Fwww.phoronix.com%2Fscan.php%3Fpage%3Dnews_item%26px%3DLinux-4.14-Zstd-Pull&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/freebsd/freebsd/commit/28ef16535cde21eeeaf75f6006b3a77952b3b51">"Integrate ZSTD into the kernel · freebsd/Freebsd-SRC@28ef165"</a>. <i><a href="/wiki/GitHub" title="GitHub">GitHub</a></i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=Integrate+ZSTD+into+the+kernel+%C2%B7+freebsd%2FFreebsd-SRC%4028ef165&rft_id=https%3A%2F%2Fgithub.com%2Ffreebsd%2Ffreebsd%2Fcommit%2F28ef16535cde21eeeaf75f6006b3a77952b3b51&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/openzfs/zfs/commit/10b3c7f5e424f54b3ba82dbf1600d866e64ec0a0">"Add ZSTD support to ZFS · openzfs/ZFS@10b3c7f"</a>. <i><a href="/wiki/GitHub" title="GitHub">GitHub</a></i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=Add+ZSTD+support+to+ZFS+%C2%B7+openzfs%2FZFS%4010b3c7f&rft_id=https%3A%2F%2Fgithub.com%2Fopenzfs%2Fzfs%2Fcommit%2F10b3c7f5e424f54b3ba82dbf1600d866e64ec0a0&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-Redshift-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-Redshift_21-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://docs.aws.amazon.com/redshift/latest/dg/zstd-encoding.html">"Zstandard Encoding - Amazon Redshift"</a>. 20 April 2019.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Zstandard+Encoding+-+Amazon+Redshift&rft.date=2019-04-20&rft_id=https%3A%2F%2Fdocs.aws.amazon.com%2Fredshift%2Flatest%2Fdg%2Fzstd-encoding.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-ubuntudeb-22"><span class="mw-cite-backlink">^ <a href="#cite_ref-ubuntudeb_22-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-ubuntudeb_22-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLarabel2018" class="citation web cs1">Larabel, Michael (12 March 2018). <a rel="nofollow" class="external text" href="https://www.phoronix.com/scan.php?page=news_item&px=Ubuntu-Zstd-Deb-Packages">"Canonical Working On Zstd-Compressed Debian Packages For Ubuntu"</a>. <i>phoronix.com</i>. Phoronix Media<span class="reference-accessdate">. Retrieved <span class="nowrap">29 October</span> 2019</span>. <q>The developers at Canonical are considering a feature freeze exception to get this newly-developed Zstd Apt/Dpkg support in Ubuntu 18.04 LTS. In doing so, they mention they would be looking at enabling Zstd compression for packages by default in Ubuntu 18.10.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=phoronix.com&rft.atitle=Canonical+Working+On+Zstd-Compressed+Debian+Packages+For+Ubuntu&rft.date=2018-03-12&rft.aulast=Larabel&rft.aufirst=Michael&rft_id=https%3A%2F%2Fwww.phoronix.com%2Fscan.php%3Fpage%3Dnews_item%26px%3DUbuntu-Zstd-Deb-Packages&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://news.softpedia.com/news/new-ubuntu-installs-could-be-speed-up-by-10-with-the-zstd-compression-algorithm-520177.shtml">"New Ubuntu Installs Could Be Speed Up by 10% with the Zstd Compression Algorithm"</a>. <i>Softpedia</i>. 12 March 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">13 August</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Softpedia&rft.atitle=New+Ubuntu+Installs+Could+Be+Speed+Up+by+10%25+with+the+Zstd+Compression+Algorithm&rft.date=2018-03-12&rft_id=https%3A%2F%2Fnews.softpedia.com%2Fnews%2Fnew-ubuntu-installs-could-be-speed-up-by-10-with-the-zstd-compression-algorithm-520177.shtml&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://metadata.ftp-master.debian.org/changelogs//main/a/apt/apt_1.8.2.3_changelog">"Debian Changelog for apt"</a>. <i>Debian</i>. 19 April 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">7 November</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Debian&rft.atitle=Debian+Changelog+for+apt&rft.date=2021-04-19&rft_id=https%3A%2F%2Fmetadata.ftp-master.debian.org%2Fchangelogs%2F%2Fmain%2Fa%2Fapt%2Fapt_1.8.2.3_changelog&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-RFC8478-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-RFC8478_25-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCollet2018" class="citation cs1">Collet, Yann (October 2018). <a href="/wiki/Murray_Kucherawy" title="Murray Kucherawy">Kucherawy, Murray S.</a> (ed.). <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc8478"><i>Zstandard Compression and the application/zstd Media Type</i></a>. Internet Engineering Task Force Request for Comments. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.17487%2FRFC8478">10.17487/RFC8478</a></span>. <a href="/wiki/Request_for_Comments" title="Request for Comments">RFC</a> <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc8478">8478</a><span class="reference-accessdate">. Retrieved <span class="nowrap">7 October</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zstandard+Compression+and+the+application%2Fzstd+Media+Type&rft.series=Internet+Engineering+Task+Force+Request+for+Comments&rft.date=2018-10&rft_id=info%3Adoi%2F10.17487%2FRFC8478&rft.aulast=Collet&rft.aufirst=Yann&rft_id=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Frfc8478&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLarabel2019" class="citation web cs1">Larabel, Michael (16 October 2019). <a rel="nofollow" class="external text" href="https://www.phoronix.com/scan.php?page=news_item&px=Arch-Linux-Pacman-Zstd-Near">"Arch Linux Nears Roll-Out of ZSTD Compressed Packages for Faster Pacman Installs"</a>. <i>Phoronix</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Phoronix&rft.atitle=Arch+Linux+Nears+Roll-Out+of+ZSTD+Compressed+Packages+for+Faster+Pacman+Installs&rft.date=2019-10-16&rft.aulast=Larabel&rft.aufirst=Michael&rft_id=https%3A%2F%2Fwww.phoronix.com%2Fscan.php%3Fpage%3Dnews_item%26px%3DArch-Linux-Pacman-Zstd-Near&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBroda2020" class="citation web cs1">Broda, Mara (4 January 2020). <a rel="nofollow" class="external text" href="https://www.archlinux.org/news/now-using-zstandard-instead-of-xz-for-package-compression/">"Now using Zstandard instead of xz for package compression"</a>. <i>Arch Linux</i><span class="reference-accessdate">. Retrieved <span class="nowrap">5 January</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Arch+Linux&rft.atitle=Now+using+Zstandard+instead+of+xz+for+package+compression&rft.date=2020-01-04&rft.aulast=Broda&rft.aufirst=Mara&rft_id=https%3A%2F%2Fwww.archlinux.org%2Fnews%2Fnow-using-zstandard-instead-of-xz-for-package-compression%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-28">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBroda2019" class="citation mailinglist cs1">Broda, Mara (25 March 2019). <a rel="nofollow" class="external text" href="https://lists.archlinux.org/pipermail/arch-dev-public/2019-March/029542.html">"RFC: (devtools) Changing default compression method to zstd"</a>. <i>arch-dev-public</i> (Mailing list).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=RFC%3A+%28devtools%29+Changing+default+compression+method+to+zstd&rft.date=2019-03-25&rft.aulast=Broda&rft.aufirst=Mara&rft_id=https%3A%2F%2Flists.archlinux.org%2Fpipermail%2Farch-dev-public%2F2019-March%2F029542.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-29">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrodaPolyak2019" class="citation web cs1">Broda, Mara; Polyak, Levente (27 December 2019). <a rel="nofollow" class="external text" href="https://github.com/archlinux/devtools/commit/bcda211dd86b3bf54a9bc40d2e19f1aad4bbfbb8">"makepkg.conf: change default compression method to zstd"</a>. <i><a href="/wiki/GitHub" title="GitHub">GitHub</a></i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=makepkg.conf%3A+change+default+compression+method+to+zstd&rft.date=2019-12-27&rft.aulast=Broda&rft.aufirst=Mara&rft.au=Polyak%2C+Levente&rft_id=https%3A%2F%2Fgithub.com%2Farchlinux%2Fdevtools%2Fcommit%2Fbcda211dd86b3bf54a9bc40d2e19f1aad4bbfbb8&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-30">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRazzolini2021" class="citation web cs1">Razzolini, Giancarlo (19 February 2021). <a rel="nofollow" class="external text" href="https://archlinux.org/news/moving-to-zstandard-images-by-default-on-mkinitcpio/">"News: Moving to Zstandard images by default on mkinitcpio"</a>. <i>Arch Linux</i><span class="reference-accessdate">. Retrieved <span class="nowrap">28 December</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Arch+Linux&rft.atitle=News%3A+Moving+to+Zstandard+images+by+default+on+mkinitcpio&rft.date=2021-02-19&rft.aulast=Razzolini&rft.aufirst=Giancarlo&rft_id=https%3A%2F%2Farchlinux.org%2Fnews%2Fmoving-to-zstandard-images-by-default-on-mkinitcpio%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-31">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://fedoraproject.org/wiki/Changes/Switch_RPMs_to_zstd_compression">"Changes/Switch RPMS to ZSTD compression"</a>. <i>Fedora Project Wiki</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Fedora+Project+Wiki&rft.atitle=Changes%2FSwitch+RPMS+to+ZSTD+compression&rft_id=https%3A%2F%2Ffedoraproject.org%2Fwiki%2FChanges%2FSwitch_RPMs_to_zstd_compression&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-32">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://fedoramagazine.org/fedora-workstation-34-feature-focus-btrfs-transparent-compression/">"Fedora Workstation 34 feature focus: Btrfs transparent compression"</a>. <i>Fedora Magazine</i>. 14 April 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">12 May</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Fedora+Magazine&rft.atitle=Fedora+Workstation+34+feature+focus%3A+Btrfs+transparent+compression&rft.date=2021-04-14&rft_id=https%3A%2F%2Ffedoramagazine.org%2Ffedora-workstation-34-feature-focus-btrfs-transparent-compression%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-33"><span class="mw-cite-backlink"><b><a href="#cite_ref-33">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://fedoraproject.org/wiki/Changes/BtrfsTransparentCompression">"Changes/BtrfsTransparentCompression"</a>. <i>Fedora Project Wiki</i><span class="reference-accessdate">. Retrieved <span class="nowrap">12 May</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Fedora+Project+Wiki&rft.atitle=Changes%2FBtrfsTransparentCompression&rft_id=https%3A%2F%2Ffedoraproject.org%2Fwiki%2FChanges%2FBtrfsTransparentCompression&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-34">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://gbatemp.net/threads/nszip-nsp-compressor-decompressor-to-reduce-storage.530313/">"RELEASE - nsZip - NSP compressor/decompressor to reduce storage"</a>. <i>GBAtemp.net - The Independent Video Game Community</i>. 20 October 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">3 November</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GBAtemp.net+-+The+Independent+Video+Game+Community&rft.atitle=RELEASE+-+nsZip+-+NSP+compressor%2Fdecompressor+to+reduce+storage&rft.date=2019-10-20&rft_id=https%3A%2F%2Fgbatemp.net%2Fthreads%2Fnszip-nsp-compressor-decompressor-to-reduce-storage.530313%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-35">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBosshard2019" class="citation cs2">Bosshard, Nico (31 October 2019), <a rel="nofollow" class="external text" href="https://github.com/nicoboss/nsZip"><i>nsZip is a tool to compress/decompress Nintendo Switch games using the here specified NSZ file format: nicoboss/nsZip</i></a><span class="reference-accessdate">, retrieved <span class="nowrap">3 November</span> 2019</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=nsZip+is+a+tool+to+compress%2Fdecompress+Nintendo+Switch+games+using+the+here+specified+NSZ+file+format%3A+nicoboss%2FnsZip&rft.date=2019-10-31&rft.aulast=Bosshard&rft.aufirst=Nico&rft_id=https%3A%2F%2Fgithub.com%2Fnicoboss%2FnsZip&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-zip638-36"><span class="mw-cite-backlink"><b><a href="#cite_ref-zip638_36-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="http://www.pkware.com/documents/APPNOTE/APPNOTE-6.3.8.TXT"><i>APPNOTE.TXT - .ZIP File Format Specification Version: 6.3.8</i></a>, 15 June 2020<span class="reference-accessdate">, retrieved <span class="nowrap">7 July</span> 2020</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=APPNOTE.TXT+-+.ZIP+File+Format+Specification+Version%3A+6.3.8&rft.date=2020-06-15&rft_id=http%3A%2F%2Fwww.pkware.com%2Fdocuments%2FAPPNOTE%2FAPPNOTE-6.3.8.TXT&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-zip637-37"><span class="mw-cite-backlink"><b><a href="#cite_ref-zip637_37-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="http://www.pkware.com/documents/APPNOTE/APPNOTE-6.3.7.TXT"><i>APPNOTE.TXT - .ZIP File Format Specification Version: 6.3.7</i></a>, 1 June 2020<span class="reference-accessdate">, retrieved <span class="nowrap">6 June</span> 2020</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=APPNOTE.TXT+-+.ZIP+File+Format+Specification+Version%3A+6.3.7&rft.date=2020-06-01&rft_id=http%3A%2F%2Fwww.pkware.com%2Fdocuments%2FAPPNOTE%2FAPPNOTE-6.3.7.TXT&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-38"><span class="mw-cite-backlink"><b><a href="#cite_ref-38">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://developer.chrome.com/blog/new-in-chrome-123">"New in Chrome 123 | Chrome Blog"</a>. <i>Chrome for Developers</i>. 19 March 2024<span class="reference-accessdate">. Retrieved <span class="nowrap">16 April</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Chrome+for+Developers&rft.atitle=New+in+Chrome+123+%7C+Chrome+Blog&rft.date=2024-03-19&rft_id=https%3A%2F%2Fdeveloper.chrome.com%2Fblog%2Fnew-in-chrome-123&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-39"><span class="mw-cite-backlink"><b><a href="#cite_ref-39">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.mozilla.org/en-US/firefox/126.0/releasenotes/">"Firefox 126.0, See All New Features, Updates and Fixes"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">15 May</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Firefox+126.0%2C+See+All+New+Features%2C+Updates+and+Fixes&rft_id=https%3A%2F%2Fwww.mozilla.org%2Fen-US%2Ffirefox%2F126.0%2Freleasenotes%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-40"><span class="mw-cite-backlink"><b><a href="#cite_ref-40">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.zdnet.com/article/facebook-open-sources-zstandard-data-compression-algorithm-aims-to-replace-technology-behind-zip/">"Facebook open sources Zstandard data compression algorithm, aims to replace technology behind Zip"</a>. ZDnet. 31 August 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">1 September</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Facebook+open+sources+Zstandard+data+compression+algorithm%2C+aims+to+replace+technology+behind+Zip&rft.date=2016-08-31&rft_id=https%3A%2F%2Fwww.zdnet.com%2Farticle%2Ffacebook-open-sources-zstandard-data-compression-algorithm-aims-to-replace-technology-behind-zip%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-41"><span class="mw-cite-backlink"><b><a href="#cite_ref-41">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/blob/v1.3.0/PATENTS">"zstd/PATENTS at v1.3.0 · facebook/zstd"</a>. <i>GitHub</i><span class="reference-accessdate">. Retrieved <span class="nowrap">27 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=zstd%2FPATENTS+at+v1.3.0+%C2%B7+facebook%2Fzstd&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Fblob%2Fv1.3.0%2FPATENTS&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-42"><span class="mw-cite-backlink"><b><a href="#cite_ref-42">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/releases/tag/v1.3.1">"Release Zstandard v1.3.1 · facebook/zstd"</a>. <i>GitHub</i><span class="reference-accessdate">. Retrieved <span class="nowrap">27 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=Release+Zstandard+v1.3.1+%C2%B7+facebook%2Fzstd&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Freleases%2Ftag%2Fv1.3.1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> <li id="cite_note-43"><span class="mw-cite-backlink"><b><a href="#cite_ref-43">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd/pull/801">"New license by Cyan4973 · Pull Request #801 · facebook/zstd"</a>. <i>GitHub</i><span class="reference-accessdate">. Retrieved <span class="nowrap">27 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=New+license+by+Cyan4973+%C2%B7+Pull+Request+%23801+%C2%B7+facebook%2Fzstd&rft_id=https%3A%2F%2Fgithub.com%2Ffacebook%2Fzstd%2Fpull%2F801&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZstd" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Zstd&action=edit&section=7" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://facebook.github.io/zstd/">Official website</a></span></span> <span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q26737171#P856" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></li> <li><a rel="nofollow" class="external text" href="https://github.com/facebook/zstd">zstd</a> on <a href="/wiki/GitHub" title="GitHub">GitHub</a></li> <li><a rel="nofollow" class="external text" href="https://github.com/mcmilk/7-Zip-zstd">7zip with Zstandard</a> on <a href="/wiki/GitHub" title="GitHub">GitHub</a></li> <li>"<a rel="nofollow" class="external text" href="https://engineering.fb.com/2016/08/31/core-infra/smaller-and-faster-data-compression-with-zstandard/">Smaller and faster data compression with Zstandard</a>", Yann Collet and Chip Turner, 31 August 2016, Facebook Announcement</li> <li><a rel="nofollow" class="external text" href="https://www.theguardian.com/info/developer-blog/2016/dec/01/discover-new-compression-iinovations-brotli-and-zstandard">The Guardian is using ZStandard instead of zlib</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl 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.navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Data_compression_methods" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Compression_methods" title="Template:Compression methods"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Compression_methods" title="Template talk:Compression methods"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Compression_methods" title="Special:EditPage/Template:Compression methods"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Data_compression_methods" style="font-size:114%;margin:0 4em"><a href="/wiki/Data_compression" title="Data compression">Data compression</a> methods</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lossless_compression" title="Lossless compression">Lossless</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;"><a href="/wiki/Entropy_coding" title="Entropy coding">Entropy type</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adaptive_coding" title="Adaptive coding">Adaptive coding</a></li> <li><a href="/wiki/Arithmetic_coding" title="Arithmetic coding">Arithmetic</a></li> <li><a href="/wiki/Asymmetric_numeral_systems" title="Asymmetric numeral systems">Asymmetric numeral systems</a></li> <li><a href="/wiki/Golomb_coding" title="Golomb coding">Golomb</a></li> <li><a href="/wiki/Huffman_coding" title="Huffman coding">Huffman</a> <ul><li><a href="/wiki/Adaptive_Huffman_coding" title="Adaptive Huffman coding">Adaptive</a></li> <li><a href="/wiki/Canonical_Huffman_code" title="Canonical Huffman code">Canonical</a></li> <li><a href="/wiki/Modified_Huffman_coding" title="Modified Huffman coding">Modified</a></li></ul></li> <li><a href="/wiki/Range_coding" title="Range coding">Range</a></li> <li><a href="/wiki/Shannon_coding" title="Shannon coding">Shannon</a></li> <li><a href="/wiki/Shannon%E2%80%93Fano_coding" title="Shannon–Fano coding">Shannon–Fano</a></li> <li><a href="/wiki/Shannon%E2%80%93Fano%E2%80%93Elias_coding" title="Shannon–Fano–Elias coding">Shannon–Fano–Elias</a></li> <li><a href="/wiki/Tunstall_coding" title="Tunstall coding">Tunstall</a></li> <li><a href="/wiki/Unary_coding" title="Unary coding">Unary</a></li> <li><a href="/wiki/Universal_code_(data_compression)" title="Universal code (data compression)">Universal</a> <ul><li><a href="/wiki/Exponential-Golomb_coding" title="Exponential-Golomb coding">Exp-Golomb</a></li> <li><a href="/wiki/Fibonacci_coding" title="Fibonacci coding">Fibonacci</a></li> <li><a href="/wiki/Elias_gamma_coding" title="Elias gamma coding">Gamma</a></li> <li><a href="/wiki/Levenshtein_coding" title="Levenshtein coding">Levenshtein</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;"><a href="/wiki/Dictionary_coder" title="Dictionary coder">Dictionary type</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Byte_pair_encoding" title="Byte pair encoding">Byte pair encoding</a></li> <li><a href="/wiki/LZ77_and_LZ78" title="LZ77 and LZ78">Lempel–Ziv</a> <ul><li><a href="/wiki/842_(compression_algorithm)" title="842 (compression algorithm)">842</a></li> <li><a href="/wiki/LZ4_(compression_algorithm)" title="LZ4 (compression algorithm)">LZ4</a></li> <li><a href="/wiki/LZJB" class="mw-redirect" title="LZJB">LZJB</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Oberhumer" title="Lempel–Ziv–Oberhumer">LZO</a></li> <li><a href="/wiki/LZRW" title="LZRW">LZRW</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Storer%E2%80%93Szymanski" title="Lempel–Ziv–Storer–Szymanski">LZSS</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Welch" title="Lempel–Ziv–Welch">LZW</a></li> <li><a href="/wiki/LZWL" title="LZWL">LZWL</a></li> <li><a href="/wiki/Snappy_(compression)" title="Snappy (compression)">Snappy</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;">Other types</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Burrows%E2%80%93Wheeler_transform" title="Burrows–Wheeler transform">BWT</a></li> <li><a href="/wiki/Context_tree_weighting" title="Context tree weighting">CTW</a></li> <li><a href="/wiki/Context_mixing" title="Context mixing">CM</a></li> <li><a href="/wiki/Delta_encoding" title="Delta encoding">Delta</a> <ul><li><a href="/wiki/Incremental_encoding" title="Incremental encoding">Incremental</a></li></ul></li> <li><a href="/wiki/Dynamic_Markov_compression" title="Dynamic Markov compression">DMC</a></li> <li><a href="/wiki/Differential_pulse-code_modulation" title="Differential pulse-code modulation">DPCM</a></li> <li><a href="/wiki/Grammar-based_code" title="Grammar-based code">Grammar</a> <ul><li><a href="/wiki/Re-Pair" title="Re-Pair">Re-Pair</a></li> <li><a href="/wiki/Sequitur_algorithm" title="Sequitur algorithm">Sequitur</a></li></ul></li> <li><a href="/wiki/Discrete_cosine_transform" title="Discrete cosine transform">LDCT</a></li> <li><a href="/wiki/Move-to-front_transform" title="Move-to-front transform">MTF</a></li> <li><a href="/wiki/PAQ" title="PAQ">PAQ</a></li> <li><a href="/wiki/Prediction_by_partial_matching" title="Prediction by partial matching">PPM</a></li> <li><a href="/wiki/Run-length_encoding" title="Run-length encoding">RLE</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;">Hybrid</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li>LZ77 + Huffman <ul><li><a href="/wiki/Deflate" title="Deflate">Deflate</a></li> <li><a href="/wiki/LZX" title="LZX">LZX</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Stac" title="Lempel–Ziv–Stac">LZS</a></li></ul></li> <li>LZ77 + ANS <ul><li><a href="/wiki/LZFSE" title="LZFSE">LZFSE</a></li></ul></li> <li>LZ77 + Huffman + ANS <ul><li><a class="mw-selflink selflink">Zstandard</a></li></ul></li> <li>LZ77 + Huffman + context <ul><li><a href="/wiki/Brotli" title="Brotli">Brotli</a></li></ul></li> <li>LZSS + Huffman <ul><li><a href="/wiki/LHA_(file_format)" title="LHA (file format)">LHA/LZH</a></li></ul></li> <li>LZ77 + Range <ul><li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm" title="Lempel–Ziv–Markov chain algorithm">LZMA</a></li> <li>LZHAM</li></ul></li> <li>RLE + BWT + MTF + Huffman <ul><li><a href="/wiki/Bzip2" title="Bzip2">bzip2</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lossy_compression" title="Lossy compression">Lossy</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;"><a href="/wiki/Transform_coding" title="Transform coding">Transform type</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Discrete_cosine_transform" title="Discrete cosine transform">Discrete cosine transform</a> <ul><li><a href="/wiki/Discrete_cosine_transform" title="Discrete cosine transform">DCT</a></li> <li><a href="/wiki/Modified_discrete_cosine_transform" title="Modified discrete cosine transform">MDCT</a></li></ul></li> <li><a href="/wiki/Discrete_sine_transform" title="Discrete sine transform">DST</a></li> <li><a href="/wiki/Fast_Fourier_transform" title="Fast Fourier transform">FFT</a></li> <li><a href="/wiki/Wavelet_transform" title="Wavelet transform">Wavelet</a> <ul><li><a href="/wiki/Daubechies_wavelet" title="Daubechies wavelet">Daubechies</a></li> <li><a href="/wiki/Discrete_wavelet_transform" title="Discrete wavelet transform">DWT</a></li> <li><a href="/wiki/Set_partitioning_in_hierarchical_trees" title="Set partitioning in hierarchical trees">SPIHT</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;">Predictive type</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Differential_pulse-code_modulation" title="Differential pulse-code modulation">DPCM</a> <ul><li><a href="/wiki/Adaptive_differential_pulse-code_modulation" title="Adaptive differential pulse-code modulation">ADPCM</a></li></ul></li> <li><a href="/wiki/Linear_predictive_coding" title="Linear predictive coding">LPC</a> <ul><li><a href="/wiki/Algebraic_code-excited_linear_prediction" title="Algebraic code-excited linear prediction">ACELP</a></li> <li><a href="/wiki/Code-excited_linear_prediction" title="Code-excited linear prediction">CELP</a></li> <li><a href="/wiki/Log_area_ratio" title="Log area ratio">LAR</a></li> <li><a href="/wiki/Line_spectral_pairs" title="Line spectral pairs">LSP</a></li> <li><a href="/wiki/Warped_linear_predictive_coding" title="Warped linear predictive coding">WLPC</a></li></ul></li> <li>Motion <ul><li><a href="/wiki/Motion_compensation" title="Motion compensation">Compensation</a></li> <li><a href="/wiki/Motion_estimation" title="Motion estimation">Estimation</a></li> <li><a href="/wiki/Motion_vector" class="mw-redirect" title="Motion vector">Vector</a></li></ul></li> <li><a href="/wiki/Psychoacoustics" title="Psychoacoustics">Psychoacoustic</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Data_compression#Audio" title="Data compression">Audio</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;">Concepts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bit_rate" title="Bit rate">Bit rate</a> <ul><li><a href="/wiki/Average_bitrate" title="Average bitrate">ABR</a></li> <li><a href="/wiki/Constant_bitrate" title="Constant bitrate">CBR</a></li> <li><a href="/wiki/Variable_bitrate" title="Variable bitrate">VBR</a></li></ul></li> <li><a href="/wiki/Companding" title="Companding">Companding</a></li> <li><a href="/wiki/Convolution" title="Convolution">Convolution</a></li> <li><a href="/wiki/Dynamic_range" title="Dynamic range">Dynamic range</a></li> <li><a href="/wiki/Latency_(audio)" title="Latency (audio)">Latency</a></li> <li><a href="/wiki/Nyquist%E2%80%93Shannon_sampling_theorem" title="Nyquist–Shannon sampling theorem">Nyquist–Shannon theorem</a></li> <li><a href="/wiki/Sampling_(signal_processing)" title="Sampling (signal processing)">Sampling</a></li> <li><a href="/wiki/Silence_compression" title="Silence compression">Silence compression</a></li> <li><a href="/wiki/Sound_quality" title="Sound quality">Sound quality</a></li> <li><a href="/wiki/Speech_coding" title="Speech coding">Speech coding</a></li> <li><a href="/wiki/Sub-band_coding" title="Sub-band coding">Sub-band coding</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;"><a href="/wiki/Audio_codec" title="Audio codec">Codec</a> parts</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/A-law_algorithm" title="A-law algorithm">A-law</a></li> <li><a href="/wiki/%CE%9C-law_algorithm" title="Μ-law algorithm">μ-law</a></li> <li><a href="/wiki/Differential_pulse-code_modulation" title="Differential pulse-code modulation">DPCM</a> <ul><li><a href="/wiki/Adaptive_differential_pulse-code_modulation" title="Adaptive differential pulse-code modulation">ADPCM</a></li> <li><a href="/wiki/Delta_modulation" title="Delta modulation">DM</a></li></ul></li> <li><a href="/wiki/Fourier_transform" title="Fourier transform">FT</a> <ul><li><a href="/wiki/Fast_Fourier_transform" title="Fast Fourier transform">FFT</a></li></ul></li> <li><a href="/wiki/Linear_predictive_coding" title="Linear predictive coding">LPC</a> <ul><li><a href="/wiki/Algebraic_code-excited_linear_prediction" title="Algebraic code-excited linear prediction">ACELP</a></li> <li><a href="/wiki/Code-excited_linear_prediction" title="Code-excited linear prediction">CELP</a></li> <li><a href="/wiki/Log_area_ratio" title="Log area ratio">LAR</a></li> <li><a href="/wiki/Line_spectral_pairs" title="Line spectral pairs">LSP</a></li> <li><a href="/wiki/Warped_linear_predictive_coding" title="Warped linear predictive coding">WLPC</a></li></ul></li> <li><a href="/wiki/Modified_discrete_cosine_transform" title="Modified discrete cosine transform">MDCT</a></li> <li><a href="/wiki/Psychoacoustics" title="Psychoacoustics">Psychoacoustic model</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Image_compression" title="Image compression">Image</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;">Concepts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chroma_subsampling" title="Chroma subsampling">Chroma subsampling</a></li> <li><a href="/wiki/Coding_tree_unit" title="Coding tree unit">Coding tree unit</a></li> <li><a href="/wiki/Color_space" title="Color space">Color space</a></li> <li><a href="/wiki/Compression_artifact" title="Compression artifact">Compression artifact</a></li> <li><a href="/wiki/Image_resolution" title="Image resolution">Image resolution</a></li> <li><a href="/wiki/Macroblock" title="Macroblock">Macroblock</a></li> <li><a href="/wiki/Pixel" title="Pixel">Pixel</a></li> <li><a href="/wiki/Peak_signal-to-noise_ratio" title="Peak signal-to-noise ratio">PSNR</a></li> <li><a href="/wiki/Quantization_(image_processing)" title="Quantization (image processing)">Quantization</a></li> <li><a href="/wiki/Standard_test_image" title="Standard test image">Standard test image</a></li> <li><a href="/wiki/Texture_compression" title="Texture compression">Texture compression</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;">Methods</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chain_code" title="Chain code">Chain code</a></li> <li><a href="/wiki/Discrete_cosine_transform" title="Discrete cosine transform">DCT</a></li> <li><a href="/wiki/Deflate" title="Deflate">Deflate</a></li> <li><a href="/wiki/Fractal_compression" title="Fractal compression">Fractal</a></li> <li><a href="/wiki/Karhunen%E2%80%93Lo%C3%A8ve_theorem" class="mw-redirect" title="Karhunen–Loève theorem">KLT</a></li> <li><a href="/wiki/Pyramid_(image_processing)" title="Pyramid (image processing)">LP</a></li> <li><a href="/wiki/Run-length_encoding" title="Run-length encoding">RLE</a></li> <li><a href="/wiki/Wavelet_transform" title="Wavelet transform">Wavelet</a> <ul><li><a href="/wiki/Daubechies_wavelet" title="Daubechies wavelet">Daubechies</a></li> <li><a href="/wiki/Discrete_wavelet_transform" title="Discrete wavelet transform">DWT</a></li> <li><a href="/wiki/Embedded_zerotrees_of_wavelet_transforms" title="Embedded zerotrees of wavelet transforms">EZW</a></li> <li><a href="/wiki/Set_partitioning_in_hierarchical_trees" title="Set partitioning in hierarchical trees">SPIHT</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Data_compression#Video" title="Data compression">Video</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;">Concepts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bit_rate" title="Bit rate">Bit rate</a> <ul><li><a href="/wiki/Average_bitrate" title="Average bitrate">ABR</a></li> <li><a href="/wiki/Constant_bitrate" title="Constant bitrate">CBR</a></li> <li><a href="/wiki/Variable_bitrate" title="Variable bitrate">VBR</a></li></ul></li> <li><a href="/wiki/Display_resolution" title="Display resolution">Display resolution</a></li> <li><a href="/wiki/Film_frame" title="Film frame">Frame</a></li> <li><a href="/wiki/Frame_rate" title="Frame rate">Frame rate</a></li> <li><a href="/wiki/Video_compression_picture_types" title="Video compression picture types">Frame types</a></li> <li><a href="/wiki/Interlaced_video" title="Interlaced video">Interlace</a></li> <li><a href="/wiki/Video#Characteristics_of_video_streams" title="Video">Video characteristics</a></li> <li><a href="/wiki/Video_quality" title="Video quality">Video quality</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.0em;font-weight:normal;"><a href="/wiki/Video_codec" title="Video codec">Codec</a> parts</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Discrete_cosine_transform" title="Discrete cosine transform">DCT</a></li> <li><a href="/wiki/Differential_pulse-code_modulation" title="Differential pulse-code modulation">DPCM</a></li> <li><a href="/wiki/Deblocking_filter" title="Deblocking filter">Deblocking filter</a></li> <li><a href="/wiki/Lapped_transform" title="Lapped transform">Lapped transform</a></li> <li>Motion <ul><li><a href="/wiki/Motion_compensation" title="Motion compensation">Compensation</a></li> <li><a href="/wiki/Motion_estimation" title="Motion estimation">Estimation</a></li> <li><a href="/wiki/Motion_vector" class="mw-redirect" title="Motion vector">Vector</a></li></ul></li> <li><a href="/wiki/Wavelet_transform" title="Wavelet transform">Wavelet</a> <ul><li><a href="/wiki/Daubechies_wavelet" title="Daubechies wavelet">Daubechies</a></li> <li><a href="/wiki/Discrete_wavelet_transform" title="Discrete wavelet transform">DWT</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Information_theory" title="Information theory">Theory</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Compressed_data_structure" title="Compressed data structure">Compressed data structures</a> <ul><li><a href="/wiki/Compressed_suffix_array" title="Compressed suffix array">Compressed suffix array</a></li> <li><a href="/wiki/FM-index" title="FM-index">FM-index</a></li></ul></li> <li><a href="/wiki/Entropy_(information_theory)" title="Entropy (information theory)">Entropy</a></li> <li><a href="/wiki/Information_theory" title="Information theory">Information theory</a> <ul><li><a href="/wiki/Timeline_of_information_theory" title="Timeline of information theory">Timeline</a></li></ul></li> <li><a href="/wiki/Kolmogorov_complexity" title="Kolmogorov complexity">Kolmogorov complexity</a></li> <li><a href="/wiki/Prefix_code" title="Prefix code">Prefix code</a></li> <li><a href="/wiki/Quantization_(signal_processing)" title="Quantization (signal processing)">Quantization</a></li> <li><a href="/wiki/Rate%E2%80%93distortion_theory" title="Rate–distortion theory">Rate–distortion</a></li> <li><a href="/wiki/Redundancy_(information_theory)" title="Redundancy (information theory)">Redundancy</a></li> <li><a href="/wiki/Data_compression_symmetry" title="Data compression symmetry">Symmetry</a></li> <li><a href="/wiki/Smallest_grammar_problem" title="Smallest grammar problem">Smallest grammar problem</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Community</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Hutter_Prize" title="Hutter Prize">Hutter Prize</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Mark_Adler" title="Mark Adler">Mark Adler</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Template"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Symbol_template_class_pink.svg/16px-Symbol_template_class_pink.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Symbol_template_class_pink.svg/23px-Symbol_template_class_pink.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Symbol_template_class_pink.svg/31px-Symbol_template_class_pink.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Template:Compression_formats" title="Template:Compression formats">Compression formats</a></li> <li><span class="noviewer" typeof="mw:File"><span title="Template"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Symbol_template_class_pink.svg/16px-Symbol_template_class_pink.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Symbol_template_class_pink.svg/23px-Symbol_template_class_pink.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Symbol_template_class_pink.svg/31px-Symbol_template_class_pink.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Template:Compression_software" title="Template:Compression software">Compression software</a> (<a href="/wiki/Codec" title="Codec">codecs</a>)</li></ul> </div></td></tr></tbody></table></div><div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Archive_formats" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Archive_formats" title="Template:Archive formats"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Archive_formats" title="Template talk:Archive formats"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Archive_formats" title="Special:EditPage/Template:Archive formats"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Archive_formats" style="font-size:114%;margin:0 4em"><a href="/wiki/Archive_format" class="mw-redirect" title="Archive format">Archive formats</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Archiving only</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ar_(Unix)" title="Ar (Unix)">ar</a></li> <li><a href="/wiki/Cpio" title="Cpio">cpio</a></li> <li><a href="/wiki/Shar_(file_format)" title="Shar (file format)">shar</a></li> <li><a href="/wiki/Tar_(computing)" title="Tar (computing)">tar</a></li> <li><a href="/wiki/LBR_(file_format)" title="LBR (file format)">LBR</a></li> <li><a href="/wiki/Doom_modding" title="Doom modding">WAD</a></li> <li><a href="/wiki/WARC_(file_format)" title="WARC (file format)">WARC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Compression only</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Brotli" title="Brotli">Brotli</a></li> <li><a href="/wiki/Bzip2" title="Bzip2">bzip2</a></li> <li><a href="/wiki/Compress_(software)" title="Compress (software)">compress</a></li> <li><a href="/wiki/Gzip" title="Gzip">gzip</a></li> <li><a href="/wiki/Zopfli" title="Zopfli">Zopfli</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm" title="Lempel–Ziv–Markov chain algorithm">LZMA</a></li> <li><a href="/wiki/LZ4_(compression_algorithm)" title="LZ4 (compression algorithm)">LZ4</a></li> <li><a href="/wiki/Lzip" title="Lzip">lzip</a></li> <li><a href="/wiki/Lzop" title="Lzop">lzop</a></li> <li><a href="/wiki/SQ_(program)" title="SQ (program)">SQ</a></li> <li><a href="/wiki/XZ_Utils" title="XZ Utils">xz</a></li> <li><a class="mw-selflink selflink">Zstandard</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Archiving and compression</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/7z" title="7z">7z</a></li> <li><a href="/wiki/ACE_(compressed_file_format)" title="ACE (compressed file format)">ACE</a></li> <li><a href="/wiki/ARC_(file_format)" title="ARC (file format)">ARC</a></li> <li><a href="/wiki/ARJ" title="ARJ">ARJ</a></li> <li><a href="/wiki/B1_(file_format)" title="B1 (file format)">B1</a></li> <li><a href="/wiki/Cabinet_(file_format)" title="Cabinet (file format)">Cabinet</a></li> <li><a href="/wiki/CFS_(file_format)" title="CFS (file format)">cfs</a></li> <li><a href="/wiki/Compact_Pro" title="Compact Pro">cpt</a></li> <li><a href="/wiki/Dar_(disk_archiver)" title="Dar (disk archiver)">dar</a></li> <li>DGCA</li> <li><a href="/wiki/Apple_Disk_Image" title="Apple Disk Image">.dmg</a></li> <li><a href="/wiki/ALZip" title="ALZip">.egg</a></li> <li><a href="/wiki/KGB_Archiver" title="KGB Archiver">kgb</a></li> <li><a href="/wiki/LHA_(file_format)" title="LHA (file format)">LHA</a></li> <li><a href="/wiki/Lrzip" class="mw-redirect" title="Lrzip">lrzip</a></li> <li><a href="/wiki/LZX" title="LZX">LZX</a></li> <li><a href="/wiki/MPQ_(file_format)" class="mw-redirect" title="MPQ (file format)">MPQ</a></li> <li><a href="/wiki/PeaZip#Native_archive_format" title="PeaZip">PEA</a></li> <li><a href="/wiki/RAR_(file_format)" title="RAR (file format)">RAR</a></li> <li><a href="/wiki/Rzip" title="Rzip">rzip</a></li> <li><a href="/wiki/StuffIt" title="StuffIt">sit</a> <ul><li><a href="/wiki/StuffIt" title="StuffIt">sitx</a></li></ul></li> <li>SQX</li> <li><a href="/wiki/PAQ" title="PAQ">UDA</a></li> <li><a href="/wiki/Xar_(archiver)" title="Xar (archiver)">Xar</a></li> <li><a href="/wiki/Zoo_(file_format)" title="Zoo (file format)">zoo</a></li> <li><a href="/wiki/ZIP_(file_format)" title="ZIP (file format)">ZIP</a></li> <li><a href="/wiki/ZPAQ" title="ZPAQ">ZPAQ</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Package_format" title="Package format">Software packaging and distribution</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apk_(file_format)" title="Apk (file format)">apk</a></li> <li><a href="/wiki/App_(file_format)" title="App (file format)">App</a></li> <li><a href="/wiki/APPX" class="mw-redirect" title="APPX">APPX</a></li> <li><a href="/wiki/Deb_(file_format)" title="Deb (file format)">deb</a></li> <li><a href="/wiki/App_(file_format)" title="App (file format)">HAP</a></li> <li><a href="/wiki/.ipa" title=".ipa">ipa</a></li> <li><a href="/wiki/JAR_(file_format)" title="JAR (file format)">JAR</a> <ul><li><a href="/wiki/WAR_(file_format)" title="WAR (file format)">WAR</a></li> <li><a href="/wiki/Java_EE_Connector_Architecture" class="mw-redirect" title="Java EE Connector Architecture">Java RAR</a></li> <li><a href="/wiki/EAR_(file_format)" title="EAR (file format)">EAR</a></li></ul></li> <li><a href="/wiki/Windows_Installer" title="Windows Installer">MSI</a></li> <li><a href="/wiki/App_Installer" title="App Installer">MSIX</a></li> <li><a href="/wiki/Package_(macOS)" title="Package (macOS)">Package (macOS)</a></li> <li><a href="/wiki/RPM_Package_Manager" title="RPM Package Manager">RPM</a></li> <li><a href="/wiki/XAP_(file_format)" title="XAP (file format)">XAP</a></li> <li><a href="/wiki/XAML_Browser_Applications" title="XAML Browser Applications">XBAP</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Document packaging and distribution</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 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