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<!DOCTYPE html> <html class="client-nojs" lang="en" dir="ltr"> <head> <meta charset="UTF-8"/> <title>OpenZIM - openZIM</title> <script>document.documentElement.className="client-js";RLCONF={"wgBreakFrames":!1,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"87f9d4bb220ada0804dec938","wgCSPNonce":!1,"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":!1,"wgNamespaceNumber":0,"wgPageName":"OpenZIM","wgTitle":"OpenZIM","wgCurRevisionId":31333,"wgRevisionId":31333,"wgArticleId":1,"wgIsArticle":!0,"wgIsRedirect":!1,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":[],"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"OpenZIM","wgRelevantArticleId":1,"wgIsProbablyEditable":!1,"wgRelevantPageIsProbablyEditable":!1,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgRedirectedFrom":"Main_Page","wgMFDisplayWikibaseDescriptions":{"search":!1,"nearby":!1, "watchlist":!1,"tagline":!1},"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgULSAcceptLanguageList":[],"wgULSCurrentAutonym":"English","wgMediaViewerOnClick":!0,"wgMediaViewerEnabledByDefault":!0,"wgInternalRedirectTargetUrl":"/wiki/OpenZIM","wgEditSubmitButtonLabelPublish":!1,"wgULSPosition":"personal"};RLSTATE={"site.styles":"ready","noscript":"ready","user.styles":"ready","user":"ready","user.options":"loading","skins.vector.styles.legacy":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.pt":"ready"};RLPAGEMODULES=["mediawiki.action.view.redirect","site","mediawiki.page.ready","skins.vector.legacy.js","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.uls.interface","mmv.head","mmv.bootstrap.autostart"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.implement("user.options@1hzgi",function($,jQuery,require,module){/*@nomin*/mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); });});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.uls.pt%7Cext.visualEditor.desktopArticleTarget.noscript%7Cskins.vector.styles.legacy&only=styles&skin=vector"/> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector"></script> <meta name="ResourceLoaderDynamicStyles" content=""/> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector"/> <meta name="generator" content="MediaWiki 1.36.1"/> <meta property="og:image" content="https://wiki.openzim.org/w/images/thumb/6/6d/Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg/1200px-Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg"/> <link rel="shortcut icon" href="/w/images/favicon.ico"/> <link rel="search" type="application/opensearchdescription+xml" href="/w/opensearch_desc.php" title="openZIM (en)"/> <link rel="EditURI" type="application/rsd+xml" href="https://wiki.openzim.org/w/api.php?action=rsd"/> <link rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/"/> <link rel="alternate" type="application/atom+xml" title="openZIM Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"/> <link rel="canonical" href="https://wiki.openzim.org/wiki/OpenZIM"/> </head> <body class="mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-OpenZIM rootpage-OpenZIM skin-vector action-view skin-vector-legacy"><div id="mw-page-base" class="noprint"></div> <div id="mw-head-base" class="noprint"></div> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice" class="mw-body-content"></div> <div class="mw-indicators mw-body-content"> </div> <h1 id="firstHeading" class="firstHeading" >OpenZIM</h1> <div id="bodyContent" class="mw-body-content"> <div id="siteSub" class="noprint">From openZIM</div> <div id="contentSub"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Main_Page&redirect=no" class="mw-redirect" title="Main Page">Main Page</a>)</span></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="mw-parser-output"><div class="thumb tright"><div class="thumbinner" style="width:202px;"><a href="/wiki/File:Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_(2).jpg" class="image"><img alt="" src="/w/images/thumb/6/6d/Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg/250px-Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg" decoding="async" width="200" height="133" class="thumbimage" srcset="/w/images/thumb/6/6d/Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg/330px-Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg 1.5x, /w/images/thumb/6/6d/Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg/500px-Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_%282%29.jpg 2x" data-file-width="3393" data-file-height="2262" /></a> <div class="thumbcaption"><div class="magnify"><a href="/wiki/File:Cl%C3%A9_Wikip%C3%A9dia_-_Framakey_-_Kiwix_(2).jpg" class="internal" title="Enlarge"></a></div>ZIM is a perfectly suited file format to store Wikipedia on a USB stick</div></div></div> <p>The <b>openZIM</b> project proposes offline storage solutions for content coming from the Web. The project has two different targets: </p> <ul><li>Definition of the <a href="/wiki/ZIM_file_format" title="ZIM file format">ZIM file format</a>: an open and standardized file format,</li> <li>Implementation of the <a href="/wiki/Libzim" title="Libzim">libzim</a>: an open source (<a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/old-licenses/gpl-2.0.html">GPLv2</a>) implementation of the ZIM file format.</li></ul> <p>See our <a href="/wiki/Mission_of_openZIM" class="mw-redirect" title="Mission of openZIM">mission statement</a> for more details. </p><p>The openZIM project was launched by <a rel="nofollow" class="external text" href="https://wikimedia.ch/">Wikimedia CH (Switzerland)</a> and is actively maintained by <a rel="nofollow" class="external text" href="https://kiwix.org">Kiwix</a> and supported by the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org">Wikimedia Foundation</a>. </p> <h2><span class="mw-headline" id="Users">Users</span></h2> <table style="border-spacing: 1em; width: 100%; margin: 0px;"> <tbody><tr> <td style="vertical-align:middle; text-align: center; width:50%; border:1px solid #EEEEEE; background-color:#F5F5F5; padding: 1em; font-size: larger;"> <p><a href="/wiki/ZIM_Readers" class="mw-redirect" title="ZIM Readers">Download a ZIM reader</a> </p> </td> <td style="vertical-align:middle; text-align: center; width:50%; border:1px solid #EEEEEE; background-color:#F5F5F5; padding: 1em; font-size: larger;"> <p><a rel="nofollow" class="external text" href="https://library.kiwix.org">Download a ZIM file</a> </p> </td></tr></tbody></table> <h2><span class="mw-headline" id="Developers">Developers</span></h2> <table style="border-spacing: 1em; width: 100%; margin: 0px;"> <tbody><tr> <td style="vertical-align: top; text-align: left; width:50%; border:1px solid #EEEEEE; background-color:#F5F5F5; padding: 1em;"> <dl><dt>ZIM format</dt> <dd></dd></dl> <ul><li><a href="/wiki/ZIM_file_format" title="ZIM file format">ZIM file format</a></li></ul> <dl><dt>Get the code</dt> <dd></dd></dl> <ul><li><a rel="nofollow" class="external text" href="https://github.com/openzim/">Git</a></li> <li><a href="/wiki/Releases" title="Releases">Releases</a></li></ul> <dl><dt>Libraries</dt></dl> <ul><li><a href="/wiki/Libzim" title="Libzim">Libzim</a></li> <li><a href="/wiki/Bindings" title="Bindings">Bindings</a></li></ul> </td> <td style="vertical-align: top; text-align: left; width:50%; border:1px solid #EEEEEE; background-color:#F5F5F5; padding: 1em;"> <dl><dt>Other</dt> <dd></dd></dl> <ul><li><a href="/wiki/Features" title="Features">Features</a></li> <li><a href="/wiki/Roadmap" title="Roadmap">Roadmap</a></li> <li><a rel="nofollow" class="external text" href="https://github.com/openzim/">Report a Bug</a></li> <li><a rel="nofollow" class="external text" href="https://github.com/openzim/">Known Bugs</a></li></ul> </td></tr></tbody></table> <h2><span class="mw-headline" id="General">General</span></h2> <table style="border-spacing: 1em; width: 100%; margin: 0px;"> <tbody><tr> <td style="vertical-align: top; text-align: left; width:50%; border:1px solid #EEEEEE; background-color:#F5F5F5; padding: 1em;"> <dl><dt>Who and where we are</dt></dl> <ul><li>Join our <a rel="nofollow" class="external text" href="https://lists.wikimedia.org/mailman/listinfo/offline-l">Mailinglist</a> (<a rel="nofollow" class="external text" href="http://lists.wikimedia.org/pipermail/offline-l/">Archive</a>)</li> <li><a rel="nofollow" class="external text" href="https://web.libera.chat/?channels=#openzim">Chat with us at #openzim at Libera.chat (IRC)</a></li> <li><a href="/wiki/Project_Team" class="mw-redirect" title="Project Team">Project Team</a></li></ul> <dl><dt>Advertising</dt></dl> <ul><li><a href="/wiki/Category:Visuals" title="Category:Visuals">Visuals</a></li> <li><a href="/wiki/Category:Press_Releases" title="Category:Press Releases">Press Releases</a></li></ul> </td> <td style="vertical-align: top; text-align: left; width:50%; border:1px solid #EEEEEE; background-color:#F5F5F5; padding: 1em;"> <dl><dt>Publishers</dt></dl> <ul><li><a href="/wiki/Build_your_ZIM_file" title="Build your ZIM file">Build your ZIM file</a></li></ul> <dl><dt>Other</dt></dl> <ul><li><a href="/wiki/Developer_Meetings" title="Developer Meetings">Developer Meetings</a></li> <li><a href="/wiki/Category:Archives" title="Category:Archives">Archives</a></li></ul> </td></tr></tbody></table> <p><br /> </p>    </div> <div class="printfooter">Retrieved from "<a dir="ltr" href="https://wiki.openzim.org/w/index.php?title=OpenZIM&oldid=31333">https://wiki.openzim.org/w/index.php?title=OpenZIM&oldid=31333</a>"</div></div> <div id="catlinks" class="catlinks catlinks-allhidden" data-mw="interface"></div> </div> </div> <div id="mw-navigation"> <h2>Navigation menu</h2> <div id="mw-head">  <nav id="p-personal" class="mw-portlet mw-portlet-personal vector-menu" aria-labelledby="p-personal-label" role="navigation" > <h3 id="p-personal-label" class="vector-menu-heading"> <span>Personal tools</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="pt-uls" class="active"><a href="#" class="uls-trigger">English</a></li><li id="pt-createaccount"><a href="/w/index.php?title=Special:CreateAccount&returnto=OpenZIM" title="You are encouraged to create an account and log in; 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<input type="hidden" name="title" value="Special:Search"/> <input type="submit" name="fulltext" value="Search" title="Search the pages for this text" id="mw-searchButton" class="searchButton mw-fallbackSearchButton"/> <input type="submit" name="go" value="Go" title="Go to a page with this exact name if it exists" id="searchButton" class="searchButton"/> </div> </form> </div> </div> </div> <div id="mw-panel"> <div id="p-logo" role="banner"> <a class="mw-wiki-logo" href="/wiki/Main_Page" title="Visit the main page"></a> </div>  <nav id="p-navigation" class="mw-portlet mw-portlet-navigation vector-menu vector-menu-portal portal" aria-labelledby="p-navigation-label" role="navigation" > <h3 id="p-navigation-label" class="vector-menu-heading"> <span>Navigation</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="n-ZIM-Main-page"><a href="/wiki/OpenZIM">ZIM Main page</a></li><li id="n-ZIM-Readers"><a href="/wiki/Readers">ZIM Readers</a></li><li 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