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<li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Geotagging" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Geotagging" title="You're encouraged to log in; however, it's not mandatory. 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id="toc-Applications-sublist" class="vector-toc-list"> <li id="toc-In_social_media" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#In_social_media"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>In social media</span> </div> </a> <ul id="toc-In_social_media-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Photos" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Photos"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Photos</span> </div> </a> <ul id="toc-Photos-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Remote_sensing_data" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Remote_sensing_data"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>Remote sensing data</span> </div> </a> <ul id="toc-Remote_sensing_data-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Audio/video_files" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Audio/video_files"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>Audio/video files</span> </div> </a> <ul id="toc-Audio/video_files-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-SMS_messages" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#SMS_messages"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.5</span> <span>SMS messages</span> </div> </a> <ul id="toc-SMS_messages-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-DNS_entries" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#DNS_entries"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.6</span> <span>DNS entries</span> </div> </a> <ul id="toc-DNS_entries-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-HTML_pages" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#HTML_pages"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7</span> <span>HTML pages</span> </div> </a> <ul id="toc-HTML_pages-sublist" class="vector-toc-list"> <li id="toc-ICBM_method" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#ICBM_method"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7.1</span> <span>ICBM method</span> </div> </a> <ul id="toc-ICBM_method-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-RDF_feeds" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#RDF_feeds"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7.2</span> <span>RDF feeds</span> </div> </a> <ul id="toc-RDF_feeds-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Microformat" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Microformat"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.7.3</span> <span>Microformat</span> </div> </a> <ul id="toc-Microformat-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-In_tag-based_systems" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#In_tag-based_systems"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.8</span> <span>In tag-based systems</span> </div> </a> <ul id="toc-In_tag-based_systems-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Geoblogging" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Geoblogging"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.9</span> <span>Geoblogging</span> </div> </a> <ul id="toc-Geoblogging-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Wikipedia_article_geosearching_apps" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Wikipedia_article_geosearching_apps"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.10</span> <span>Wikipedia article geosearching apps</span> </div> </a> <ul id="toc-Wikipedia_article_geosearching_apps-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Dangers" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Dangers"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Dangers</span> </div> </a> <ul id="toc-Dangers-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" 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">4</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Further_reading" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Further_reading"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Further reading</span> </div> </a> <ul id="toc-Further_reading-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">6</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 vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Geotagging</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet 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 27 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-27" 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">27 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Geomerking" title="Geomerking – Afrikaans" lang="af" hreflang="af" data-title="Geomerking" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%88%D8%B3%D9%85_%D8%AC%D8%BA%D8%B1%D8%A7%D9%81%D9%8A" title="وسم جغرافي – Arabic" lang="ar" hreflang="ar" data-title="وسم جغرافي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%9C%E0%A6%BF%E0%A6%93-%E0%A6%9F%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%97%E0%A6%BF%E0%A6%82" title="জিও-ট্যাগিং – Bangla" lang="bn" hreflang="bn" data-title="জিও-ট্যাগিং" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Geoetiquetatge" title="Geoetiquetatge – Catalan" lang="ca" hreflang="ca" data-title="Geoetiquetatge" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Geotagging" title="Geotagging – Czech" lang="cs" hreflang="cs" data-title="Geotagging" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Geotagging" title="Geotagging – Danish" lang="da" hreflang="da" data-title="Geotagging" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Geotagging_(Fotografie)" title="Geotagging (Fotografie) – German" lang="de" hreflang="de" data-title="Geotagging (Fotografie)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Asukoham%C3%A4rgis" title="Asukohamärgis – Estonian" lang="et" hreflang="et" data-title="Asukohamärgis" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Geoetiquetado" title="Geoetiquetado – Spanish" lang="es" hreflang="es" data-title="Geoetiquetado" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%86%D8%B4%D8%A7%D9%86%E2%80%8C%DA%AF%D8%B0%D8%A7%D8%B1%DB%8C_%D8%AC%D8%BA%D8%B1%D8%A7%D9%81%DB%8C%D8%A7%DB%8C%DB%8C" title="نشان‌گذاری جغرافیایی – Persian" lang="fa" hreflang="fa" data-title="نشان‌گذاری جغرافیایی" 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/G%C3%A9otag" title="Géotag – French" lang="fr" hreflang="fr" data-title="Géotag" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A7%80%EC%98%A4%ED%83%9C%EA%B9%85" title="지오태깅 – Korean" lang="ko" hreflang="ko" data-title="지오태깅" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%9C%E0%B2%BF%E0%B2%AF%E0%B3%8B%E0%B2%9F%E0%B3%8D%E0%B2%AF%E0%B2%BE%E0%B2%97%E0%B2%BF%E0%B2%82%E0%B2%97%E0%B3%8D" title="ಜಿಯೋಟ್ಯಾಗಿಂಗ್ – Kannada" lang="kn" hreflang="kn" data-title="ಜಿಯೋಟ್ಯಾಗಿಂಗ್" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Geo%C5%BEym%C4%97jimas" title="Geožymėjimas – Lithuanian" lang="lt" hreflang="lt" data-title="Geožymėjimas" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Geotagging" title="Geotagging – Hungarian" lang="hu" hreflang="hu" data-title="Geotagging" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%93%D0%B5%D0%BE%D0%BE%D0%B7%D0%BD%D0%B0%D1%87%D1%83%D0%B2%D0%B0%D1%9A%D0%B5" title="Геоозначување – Macedonian" lang="mk" hreflang="mk" data-title="Геоозначување" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Geotagging" title="Geotagging – Dutch" lang="nl" hreflang="nl" data-title="Geotagging" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%B8%E3%82%AA%E3%82%BF%E3%82%AE%E3%83%B3%E3%82%B0" title="ジオタギング – Japanese" lang="ja" hreflang="ja" data-title="ジオタギング" 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-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Geotagowanie" title="Geotagowanie – Polish" lang="pl" hreflang="pl" data-title="Geotagowanie" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Geotagging" title="Geotagging – Portuguese" lang="pt" hreflang="pt" data-title="Geotagging" 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/%D0%93%D0%B5%D0%BE%D1%82%D0%B5%D0%B3%D0%B8%D0%BD%D0%B3" title="Геотегинг – Russian" lang="ru" hreflang="ru" data-title="Геотегинг" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%AC%D9%8A%D9%88%D9%BD%D9%8A%DA%AF%D9%86%DA%AF" title="جيوٽيگنگ – Sindhi" lang="sd" hreflang="sd" data-title="جيوٽيگنگ" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Geotagging" title="Geotagging – Finnish" lang="fi" hreflang="fi" data-title="Geotagging" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Geotaggning" title="Geotaggning – Swedish" lang="sv" hreflang="sv" data-title="Geotaggning" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Geotagging" title="Geotagging – Turkish" lang="tr" hreflang="tr" data-title="Geotagging" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D0%B5%D0%BE%D1%82%D0%B5%D0%B3%D1%83%D0%B2%D0%B0%D0%BD%D0%BD%D1%8F" title="Геотегування – Ukrainian" lang="uk" hreflang="uk" data-title="Геотегування" 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/%E5%9C%B0%E7%90%86%E6%A0%87%E7%AD%BE" title="地理标签 – Chinese" lang="zh" hreflang="zh" data-title="地理标签" 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/Q852595#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 id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Geotagging" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Geotagging" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Geotagging"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Geotagging&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Geotagging&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" 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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">Act of associating geographic coordinates to digital media</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Geotagging_gThumb.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/Geotagging_gThumb.png/220px-Geotagging_gThumb.png" decoding="async" width="220" height="283" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/Geotagging_gThumb.png/330px-Geotagging_gThumb.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/06/Geotagging_gThumb.png/440px-Geotagging_gThumb.png 2x" data-file-width="501" data-file-height="645" /></a><figcaption>Geotag information in a <a href="/wiki/JPEG" title="JPEG">JPEG</a> photo, shown by the software <a href="/wiki/GThumb" title="GThumb">gThumb</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Geotag_Stamp.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Geotag_Stamp.jpg/220px-Geotag_Stamp.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Geotag_Stamp.jpg/330px-Geotag_Stamp.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Geotag_Stamp.jpg/440px-Geotag_Stamp.jpg 2x" data-file-width="1920" data-file-height="1080" /></a><figcaption>Geotag information stamped onto a JPEG photo by the software GPStamper</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Solmeta_N2_auf_Nikon_D5000_Rueckansicht.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Solmeta_N2_auf_Nikon_D5000_Rueckansicht.JPG/220px-Solmeta_N2_auf_Nikon_D5000_Rueckansicht.JPG" decoding="async" width="220" height="216" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Solmeta_N2_auf_Nikon_D5000_Rueckansicht.JPG/330px-Solmeta_N2_auf_Nikon_D5000_Rueckansicht.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/79/Solmeta_N2_auf_Nikon_D5000_Rueckansicht.JPG/440px-Solmeta_N2_auf_Nikon_D5000_Rueckansicht.JPG 2x" data-file-width="1843" data-file-height="1811" /></a><figcaption>Geotagger "Solmeta N2" for the <a href="/wiki/Nikon_D5000" title="Nikon D5000">Nikon D5000</a> DSLR</figcaption></figure> <p><b><a href="/wiki/Geotagged_photograph" title="Geotagged photograph">Geotagging</a></b>, or <b>GeoTagging</b>, is the process of adding geographical identification <a href="/wiki/Metadata" title="Metadata">metadata</a> to various media such as a <a href="/wiki/Geotagged_photograph" title="Geotagged photograph">geotagged photograph</a> or video, websites, SMS messages, QR Codes or <a href="/wiki/RSS" title="RSS">RgSS</a>feeds and is a form of <a href="/wiki/Geospatial_metadata" title="Geospatial metadata">geospatial metadata</a>. This data usually consists of <a href="/wiki/Geographic_coordinate_system" title="Geographic coordinate system">latitude and longitude coordinates</a>, though they can also include <a href="/wiki/Altitude" title="Altitude">altitude</a>, <a href="/wiki/Bearing_(navigation)" title="Bearing (navigation)">bearing</a>, distance, accuracy data, and place names, and perhaps a <a href="/wiki/Time_stamp" class="mw-redirect" title="Time stamp">time stamp</a>. </p><p>Geotagging can help users find a wide variety of location-specific information from a device. For instance, someone can find images taken near a given location by entering latitude and longitude coordinates into a suitable image <a href="/wiki/Search_engine" title="Search engine">search engine</a>. Geotagging-enabled information services can also potentially be used to find <a href="/wiki/Location-based_service" title="Location-based service">location-based</a> news, websites, or other resources.<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> Geotagging can tell users the location of the content of a given picture or other media or the <a href="/wiki/Perspective_(visual)" class="mw-redirect" title="Perspective (visual)">point of view</a>, and conversely on some media platforms show media relevant to a given location. </p><p>The geographical location data used in geotagging can, in almost every case, be derived from the <a href="/wiki/Global_positioning_system" class="mw-redirect" title="Global positioning system">global positioning system</a>, and based on a <a href="/wiki/Latitude" title="Latitude">latitude</a>/<a href="/wiki/Longitude" title="Longitude">longitude</a>-coordinate system that presents each location on the earth from 180° west through 180° east along the <a href="/wiki/Equator" title="Equator">Equator</a> and 90° north through 90° south along the <a href="/wiki/Prime_meridian" title="Prime meridian">prime meridian</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2014)">citation needed</span></a></i>]</sup> </p><p>The related term <a href="/wiki/Geocoding" class="mw-redirect" title="Geocoding">geocoding</a> refers to the process of taking non-coordinate-based geographical identifiers, such as a street address, and finding associated <a href="/wiki/Geographic_coordinates" class="mw-redirect" title="Geographic coordinates">geographic coordinates</a> (or vice versa for <a href="/wiki/Reverse_geocoding" title="Reverse geocoding">reverse geocoding</a>). Such techniques can be used together with geotagging to provide alternative search techniques.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (July 2023)">citation needed</span></a></i>]</sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Applications">Applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=1" title="Edit section: Applications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="In_social_media">In social media</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=2" title="Edit section: In social media"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Geotagging is a popular feature on several social media platforms, such as Facebook and Instagram. </p><p><a href="/wiki/Facebook" title="Facebook">Facebook</a> users can geotag photos that can be added to the page of the location they are tagging. Users may also use a feature that allows them to find nearby Facebook friends by generating a list of people according to the location tracker in their mobile devices.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Instagram" title="Instagram">Instagram</a> uses a map feature that allows users to geotag photos. The map layout pin points specific photos that the user has taken on a world map. </p> <div class="mw-heading mw-heading3"><h3 id="Photos">Photos</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=3" title="Edit section: Photos"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></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">Main article: <a href="/wiki/Geotagged_photograph" title="Geotagged photograph">Geotagged photograph</a></div> <p>Two main options can be used to geotag photos: capturing GPS information at the time the photo is taken or "attaching" geocoordinates to the photograph after the picture is taken. </p><p>In order to capture GPS data at the time the photograph is captured, the user must have a camera with built in GPS or a standalone GPS along with a digital camera. Because of the requirement for wireless service providers in United States to supply more precise location information for 911 calls by September 11, 2012,<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> more and more cell phones have built-in GPS chips. Most smart phones already use a GPS chip along with built-in cameras to allow users to automatically geotag photos. Others may have the GPS chip and camera but do not have internal software needed to embed the GPS information within the picture. A few digital cameras also have built-on or built-in GPS that allow for automatic geotagging.<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><p>Devices use GPS, A-GPS or both. <a href="/wiki/Assisted_GPS" class="mw-redirect" title="Assisted GPS">A-GPS</a> can be faster getting an initial fix if within range of a cell phone tower, and may work better inside buildings. Traditional GPS does not need cell phone towers and uses standard GPS signals outside of urban areas. Traditional GPS tends to use more battery power. Almost any digital camera can be coupled with a stand-alone GPS and post processed with photo mapping software, to write the location information to the image's <a href="/wiki/Exif" title="Exif">exif</a> header. </p> <div class="mw-heading mw-heading3"><h3 id="Remote_sensing_data">Remote sensing data</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=4" title="Edit section: Remote sensing data"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Georeferencing" title="Georeferencing">Georeferencing</a></div> <p>In the field of <a href="/wiki/Remote_sensing" title="Remote sensing">remote sensing</a> the geotagging goal is to store coordinates of every pixel in the image. One approach is used with the <a href="/wiki/Orthophoto" title="Orthophoto">orthophotos</a> where we store coordinates of four corners and all the other pixels can be georeferenced by <a href="/wiki/Interpolation" title="Interpolation">interpolation</a>. The four corners are stored using <a href="/wiki/GeoTIFF" title="GeoTIFF">GeoTIFF</a> or <a href="/wiki/World_file" title="World file">World file</a> standards. <a href="/wiki/Hyperspectral_imaging" title="Hyperspectral imaging">Hyperspectral images</a> take a different approach defining a separate file of the same spatial dimensions as the image where <a href="/wiki/Latitude" title="Latitude">latitude</a> and <a href="/wiki/Longitude" title="Longitude">longitude</a> of each pixel are stored as two 2D layers in so called <i>Input geometry data</i> (IGM) files,<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> also known as GEO files. </p> <div class="mw-heading mw-heading3"><h3 id="Audio/video_files"><span id="Audio.2Fvideo_files"></span>Audio/video files</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=5" title="Edit section: Audio/video files"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Audio/video files can be geotagged via: metadata, audio encoding, overlay, or with companion files. Metadata records the geospatial data in the encoded video file to be decoded for later analysis. One of the standards used with <a href="/wiki/Unmanned_aerial_vehicle" title="Unmanned aerial vehicle">unmanned aerial vehicle</a> is <a href="/wiki/File:MISB_Standard_0601.pdf" title="File:MISB Standard 0601.pdf">MISB Standard 0601</a> which allows geocoding of corner points and horizon lines in individual video frames.<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> Audio encoding involves a process of converting gps data into audio data such as modem squawk. Overlay involves overlaying GPS data as text on the recorded video. Companion files are separate data files which correspond to respective audio/video files. Companion files are typically found in the .KML and .GPX data formats.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> For audio and video files which use the <a href="/wiki/Vorbis_comment" title="Vorbis comment">vorbiscomment</a> metadata format (including <a href="/wiki/Opus_(audio_codec)" class="mw-redirect" title="Opus (audio codec)">Opus</a>, <a href="/wiki/Ogg_Vorbis" class="mw-redirect" title="Ogg Vorbis">Ogg Vorbis</a>, <a href="/wiki/FLAC" title="FLAC">FLAC</a>, <a href="/wiki/Speex" title="Speex">Speex</a>, and <a href="/wiki/Ogg_Theora" class="mw-redirect" title="Ogg Theora">Ogg Theora</a>), there is a proposed GEO LOCATION<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> field which can be used. Like all vorbis comments, it is plain text, and it takes the form: </p><p><code>GEO_LOCATION=(decimal latitude);(decimal longitude);([optional]elevation in meters)</code> </p><p>for example: </p><p><code>GEO_LOCATION=35.1592;-98.4422;410</code> </p> <div class="mw-heading mw-heading3"><h3 id="SMS_messages">SMS messages</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=6" title="Edit section: SMS messages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/GeoSMS" title="GeoSMS">GeoSMS</a> standard works by embedding one or more <a href="/wiki/Geo_URI" class="mw-redirect" title="Geo URI">'geo' URIs</a> in the body of an SMS, for example: </p> <dl><dd><code>I'm at the pub <a rel="nofollow" class="external free" href="geo:-37.801631,144.980294;u=16">geo:-37.801631,144.980294;u=16</a></code></dd></dl> <div class="mw-heading mw-heading3"><h3 id="DNS_entries">DNS entries</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=7" title="Edit section: DNS entries"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/LOC_record" title="LOC record">LOC record</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Internet_geolocation" title="Internet geolocation">Internet geolocation</a></div> <p>RFC 1876 defines a means for expressing location information in the <a href="/wiki/Domain_Name_System" title="Domain Name System">Domain Name System</a>. LOC resources records can specify the latitude, longitude, altitude, precision of the location, and the physical size of on entity attached to an IP address. However, in practice not all IP addresses have such a record, so it is more common to use <a href="/wiki/Geolocation" class="mw-redirect" title="Geolocation">geolocation</a> services to find the physical location of an IP address. </p> <div class="mw-heading mw-heading3"><h3 id="HTML_pages">HTML pages</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=8" title="Edit section: HTML pages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading4"><h4 id="ICBM_method">ICBM method</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=9" title="Edit section: ICBM method"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/ICBM_address" title="ICBM address">ICBM address</a></div> <p>The GeoURL<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> method requires the <a href="/wiki/ICBM_address" title="ICBM address">ICBM</a> tag<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> (plus optional <a href="/wiki/Dublin_Core" title="Dublin Core">Dublin Core</a> metadata), which is used to geotag standard web pages in <a href="/wiki/HTML" title="HTML">HTML</a> format: </p> <div class="mw-highlight mw-highlight-lang-html mw-content-ltr" dir="ltr"><pre><span></span> <span class="p"><</span><span class="nt">meta</span> <span class="na">name</span><span class="o">=</span><span class="s">"ICBM"</span> <span class="na">content</span><span class="o">=</span><span class="s">"50.167958, -97.133185"</span><span class="p">></span> </pre></div> <p>The similar Geotag format allows the addition of place name and region tags: </p> <div class="mw-highlight mw-highlight-lang-html mw-content-ltr" dir="ltr"><pre><span></span> <span class="p"><</span><span class="nt">meta</span> <span class="na">name</span><span class="o">=</span><span class="s">"geo.position"</span> <span class="na">content</span><span class="o">=</span><span class="s">"50.167958;-97.133185"</span><span class="p">></span> <span class="p"><</span><span class="nt">meta</span> <span class="na">name</span><span class="o">=</span><span class="s">"geo.placename"</span> <span class="na">content</span><span class="o">=</span><span class="s">"Rockwood Rural Municipality, Manitoba, Canada"</span><span class="p">></span> <span class="p"><</span><span class="nt">meta</span> <span class="na">name</span><span class="o">=</span><span class="s">"geo.region"</span> <span class="na">content</span><span class="o">=</span><span class="s">"ca-mb"</span><span class="p">></span> </pre></div> <div class="mw-heading mw-heading4"><h4 id="RDF_feeds">RDF feeds</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=10" title="Edit section: RDF feeds"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Resource_Description_Framework" title="Resource Description Framework">RDF</a> method is defined by W3 Group and presents the information in RDF tags:<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-highlight mw-highlight-lang-xml mw-content-ltr" dir="ltr"><pre><span></span><span class="nt"><rdf:RDF</span><span class="w"> </span><span class="na">xmlns:rdf=</span><span class="s">"http://www.w3.org/1999/02/22-rdf-syntax-ns#"</span> <span class="w"> </span><span class="na">xmlns:geo=</span><span class="s">"http://www.w3.org/2003/01/geo/wgs84_pos#"</span><span class="nt">></span> <span class="w"> </span><span class="nt"><geo:Point></span> <span class="w"> </span><span class="nt"><geo:lat></span>55.701<span class="nt"></geo:lat></span> <span class="w"> </span><span class="nt"><geo:long></span>12.552<span class="nt"></geo:long></span> <span class="w"> </span><span class="nt"></geo:Point></span> <span class="nt"></rdf:RDF></span> </pre></div> <div class="mw-heading mw-heading4"><h4 id="Microformat">Microformat</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=11" title="Edit section: Microformat"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Geo_(microformat)" title="Geo (microformat)">Geo microformat</a> allows coordinates within HyperText Markup Language pages to be marked up in such a way that they can be "discovered" by software tools. Example: </p> <div class="mw-highlight mw-highlight-lang-html mw-content-ltr" dir="ltr"><pre><span></span> <span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"geo"</span><span class="p">></span> <span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"latitude"</span><span class="p">></span>50.167958<span class="p"></</span><span class="nt">span</span><span class="p">></span>; <span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"longitude"</span><span class="p">></span>-97.133185<span class="p"></</span><span class="nt">span</span><span class="p">></span> <span class="p"></</span><span class="nt">span</span><span class="p">></span> </pre></div> <p>A proposal has been developed<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> to extend Geo to cover other bodies, such as <a href="/wiki/Mars" title="Mars">Mars</a> and the <a href="/wiki/Moon" title="Moon">Moon</a>. </p><p>An example is the <a href="/wiki/Flickr" title="Flickr">Flickr</a> photo-sharing Web site, which provides geographic data for any <a href="/wiki/Geotagged_photo" class="mw-redirect" title="Geotagged photo">geotagged photo</a> in all of the above-mentioned formats. </p> <div class="mw-heading mw-heading3"><h3 id="In_tag-based_systems">In tag-based systems</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=12" title="Edit section: In tag-based systems"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>No industry standards exist, however there are a variety of techniques for adding geographical identification metadata to an information resource. One convention, established by the website <a href="/w/index.php?title=Geobloggers&action=edit&redlink=1" class="new" title="Geobloggers (page does not exist)">Geobloggers</a> and used by more and more sites, e.g. photo sharing sites <a href="/wiki/Panoramio" title="Panoramio">Panoramio</a> and <a href="/wiki/Flickr" title="Flickr">Flickr</a>, and the social bookmarking site <a href="/wiki/Del.icio.us" class="mw-redirect" title="Del.icio.us">del.icio.us</a>, enables content to be found via a location search. Such sites allow users to add metadata to an information resource via a set of so-called <i>machine tags</i> (see <a href="/wiki/Folksonomy" title="Folksonomy">folksonomy</a>). </p> <pre><code>geotagged</code> <code><a rel="nofollow" class="external free" href="geo:lat=57.64911">geo:lat=57.64911</a></code> <code><a rel="nofollow" class="external free" href="geo:lon=10.40744">geo:lon=10.40744</a></code> </pre> <p>This describes the geographic coordinates of a particular location in terms of <a href="/wiki/Latitude" title="Latitude">latitude</a> (<code>geo:lat</code>) and <a href="/wiki/Longitude" title="Longitude">longitude</a> (<code>geo:lon</code>). These are expressed in decimal degrees in the <a href="/wiki/WGS84" class="mw-redirect" title="WGS84">WGS84</a> <a href="/wiki/Datum_(geodesy)" class="mw-redirect" title="Datum (geodesy)">datum</a>, which has become something of a default geodetic datum with the advent of <a href="/wiki/GPS" class="mw-redirect" title="GPS">GPS</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (November 2007)">citation needed</span></a></i>]</sup> </p><p>Using three tags works within the constraint of having tags that can only be single 'words'. Identifying geotagged information resources on sites like <a href="/wiki/Flickr" title="Flickr">Flickr</a> and <a href="/wiki/Del.icio.us" class="mw-redirect" title="Del.icio.us">del.icio.us</a> is done by searching for the 'geotagged' tag, since the tags beginning <code>geo:lat=</code> and <code>geo:lon=</code> are necessarily very variable. </p><p>Another option is to tag with a <a href="/wiki/Geohash" title="Geohash">Geohash</a>: </p> <pre><code><a rel="nofollow" class="external free" href="geo:hash=u4pruydqqvj">geo:hash=u4pruydqqvj</a></code> </pre> <p>A further convention proposed by <a href="/w/index.php?title=FlickrFly&action=edit&redlink=1" class="new" title="FlickrFly (page does not exist)">FlickrFly</a> adds tags to specify the suggested viewing angle and range when the geotagged location is viewed in <a href="/wiki/Google_Earth" title="Google Earth">Google Earth</a>: </p> <pre><code>ge:head=225.00</code> <code>ge:tilt=45.00</code> <code>ge:range=560.00</code> </pre> <p>These three tags would indicate that the camera is pointed heading 225° (south west), has a 45° tilt and is 560 metres from the subject. </p><p>Where the above methods are in use, their coordinates may differ from those specified by the photo's internal Exif data, for example because of a correction or a difference between the camera's location and the subject's. </p><p>In order to integrate geotags in social media and enhance text readability or oral use, the concept of 'meetag' or tag-to-meet has been proposed. Differing from hashtag construction, meetag includes the geolocation information after an underscore. A meetag is therefore a word or an unspaced phrase prefixed with an underscore ("_"). Words in messages on microblogging and social networking services may be tagged by putting "_" before them, either as they appear in a sentence, (e.g. "There is a concert going _montreuxjazzfestival", "the world wide web was invented _cern _geneve", ...) or appended to it.<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> </p> <div class="mw-heading mw-heading3"><h3 id="Geoblogging">Geoblogging</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=13" title="Edit section: Geoblogging"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Geoblogging attaches specific geographic location information to <a href="/wiki/Blog" title="Blog">blog</a> entries via <i>geotags</i>. Searching a list of blogs and pictures tagged using geotag technology allows users to select areas of specific interest to them on interactive maps.<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> </p><p>The progression of <a href="/wiki/GPS" class="mw-redirect" title="GPS">GPS</a> technology, along with the development of various online applications, has fueled the popularity of such tagged blogging, <sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (January 2008)">citation needed</span></a></i>]</sup> and the combination of <a href="/wiki/GPS_phone" class="mw-redirect" title="GPS phone">GPS phones</a> and <a href="/wiki/GSM_localization" class="mw-redirect" title="GSM localization">GSM localization</a>, has led to the <a href="/wiki/Moblog" class="mw-redirect" title="Moblog">moblogging</a>, where blog posts are tagged with exact position of the user. <a href="/wiki/Real-time_geotagging" title="Real-time geotagging">Real-time geotagging</a> relays automatically geotagged media such as photos or video to be published and shared immediately. </p><p>For better integration and readability of geotags into blog texts, the <a href="/w/index.php?title=Meetag&action=edit&redlink=1" class="new" title="Meetag (page does not exist)">meetag</a> syntax has been proposed, which transforms any word, sentence, or precise geolocalization coordinates prefixed with an underscore into a 'meetag'. It not only lets one express a precise location but also takes in account dynamically changing geolocations. </p> <div class="mw-heading mw-heading3"><h3 id="Wikipedia_article_geosearching_apps">Wikipedia article geosearching apps</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=14" title="Edit section: Wikipedia article geosearching apps"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Cleanup plainlinks metadata ambox ambox-style ambox-Cleanup" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/40px-Edit-clear.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/60px-Edit-clear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/80px-Edit-clear.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article may <b>require <a href="/wiki/Wikipedia:Cleanup" title="Wikipedia:Cleanup">cleanup</a></b> to meet Wikipedia's <a href="/wiki/Wikipedia:Manual_of_Style" title="Wikipedia:Manual of Style">quality standards</a>.<span class="hide-when-compact"> No <a href="/wiki/Template:Cleanup/doc" title="Template:Cleanup/doc">cleanup reason</a> has been specified. Please help <a href="/wiki/Special:EditPage/Geotagging" title="Special:EditPage/Geotagging">improve this article</a> if you can.</span> <span class="date-container"><i>(<span class="date">July 2011</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>One of the first attempts to initiate the geotagging aspect of searching and locating articles seems to be the now-inoperative site Wikinear.com, launched in 2008, which showed the user Wikipedia pages that are geographically closest to one's current location.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p><p>The 2009 app <a href="/w/index.php?title=Cyclopedia_(iPhone_application)&action=edit&redlink=1" class="new" title="Cyclopedia (iPhone application) (page does not exist)">Cyclopedia</a> works relatively well showing geotagged Wikipedia articles located within several miles of ones location, integrated with a street-view mode, and 360-degree mode. </p><p>The app Respotter Wiki, launched in 2009, claims to feature Wikipedia searching via a map, also allowing users to interact with people around them, via messaging and reviews, etc. The app, in its current function, however, seems to give only geotagged photo results. </p><p>As of 2017, the <a href="https://de.wikipedia.org/wiki/Wikipedia:WikiProjekt_Georeferenzierung/Hauptseite/Wikipedia-World/en" class="extiw" title="de:Wikipedia:WikiProjekt Georeferenzierung/Hauptseite/Wikipedia-World/en">Wikipedia-World Project</a> provides a simple map search tool which can display tagged articles near to a particular location, as well as a variety of more sophisticated tools integrated with external mapping services.<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> </p> <div class="mw-heading mw-heading2"><h2 id="Dangers">Dangers</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=15" title="Edit section: Dangers"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Following a scientific study<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> and several demonstrative websites,<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><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> a discussion on the privacy implications of geotagging has raised public attention.<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><sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><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> In particular, the automatic embedding of geotags in pictures taken with smartphones is often ignored by cell-phone users. As a result, people are often not aware that the photos they publish on the Internet have been geotagged. Many celebrities reportedly gave away their home location without knowing it.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (June 2021)">citation needed</span></a></i>]</sup> According to the study, a significant number of for-sale advertisements on <a href="/wiki/Craigslist" title="Craigslist">Craigslist</a>, that were otherwise anonymized, contained geotags, thereby revealing the location of high-valued goods—sometimes in combination with clear hints to the absence of the offerer at certain times. Publishing photos and other media tagged with exact geolocation on the Internet allows random people to track an individual's location and correlate it with other information. Therefore, criminals could find out when homes are empty because their inhabitants posted geotagged and timestamped information both about their home address and their vacation residence. These dangers can be avoided by removing geotags with a <a href="/wiki/Metadata_removal_tool" title="Metadata removal tool">metadata removal tool</a> for photos before publishing them on the <a href="/wiki/Internet" title="Internet">Internet</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (January 2022)">citation needed</span></a></i>]</sup> </p><p>In 2007, four <a href="/wiki/United_States_Army" title="United States Army">United States Army</a> <a href="/wiki/AH-64_Apache#United_States_Army" class="mw-redirect" title="AH-64 Apache">Apache helicopters</a> were destroyed on the ground by Iraqi insurgent mortar fire; the insurgents had made use of embedded coordinates in web-published photographs (geotagging) taken of the helicopters by soldiers.<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>Another newly realized danger of geotagging is the location information provided to criminal gangs and poachers on the whereabouts of often endangered animals. This can effectively make tourists scouts for these poachers, so geotagging should be turned off when photographing these animals. According to Chinoitezvi Honour, some phones automatically geotag pictures hence location should be turned off when taking pictures. </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=Geotagging&action=edit&section=16" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Geocaching" title="Geocaching">Geocaching</a></li> <li><a href="/wiki/Geographic_information_system" title="Geographic information system">Geographic information system</a> (GIS)</li> <li><a href="/wiki/Georeferencing" title="Georeferencing">Georeferencing</a></li> <li><a href="/wiki/Geomessaging" title="Geomessaging">Geomessaging</a></li> <li><a href="/wiki/GeoRSS" title="GeoRSS">GeoRSS</a></li> <li><a href="/wiki/Geo_URI_scheme" title="Geo URI scheme">geo URI scheme</a></li> <li><a href="/wiki/ISO_6709" title="ISO 6709">ISO 6709</a>, standard representation of geographic point location by coordinates</li> <li><a href="/wiki/Supranet" title="Supranet">Supranet</a></li> <li><a href="/wiki/Tag_(metadata)" title="Tag (metadata)">Tag (metadata)</a></li> <li><a href="/wiki/Toponym_resolution" title="Toponym resolution">Toponym resolution</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=Geotagging&action=edit&section=17" 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 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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 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Retrieved <span class="nowrap">2013-12-23</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+New+York+Times&rft.atitle=Web+Photos+That+Reveal+Secrets+Such+As+Where+You+Live+%2F+%22MythBusters%22+host+inadvertently+reveals+his+home+address+on+Twitter&rft.date=2010-08-11&rft.aulast=Murphy&rft.aufirst=Kate&rft_id=https%3A%2F%2Fwww.nytimes.com%2F2010%2F08%2F12%2Ftechnology%2Fpersonaltech%2F12basics.html%3F_r%3D2&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGeotagging" 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="http://www.army.mil/article/75165/Geotagging_poses_security_risks">"Geotagging poses security risks"</a>. Army.mil. 8 March 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">2013-12-23</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Geotagging+poses+security+risks&rft.pub=Army.mil&rft.date=2012-03-08&rft_id=http%3A%2F%2Fwww.army.mil%2Farticle%2F75165%2FGeotagging_poses_security_risks&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGeotagging" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Geotagging&action=edit&section=18" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLuoJoshiYuGallagher2011" class="citation journal cs1">Luo, Jiebo; Joshi, Dhiraj; Yu, Jie; Gallagher, Andrew (2011). "Geotagging in multimedia and computer vision—a survey". <i>Multimedia Tools and Applications</i>. <b>51</b> (1). Springer: 187–211. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs11042-010-0623-y">10.1007/s11042-010-0623-y</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:7433108">7433108</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Multimedia+Tools+and+Applications&rft.atitle=Geotagging+in+multimedia+and+computer+vision%E2%80%94a+survey&rft.volume=51&rft.issue=1&rft.pages=187-211&rft.date=2011&rft_id=info%3Adoi%2F10.1007%2Fs11042-010-0623-y&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A7433108%23id-name%3DS2CID&rft.aulast=Luo&rft.aufirst=Jiebo&rft.au=Joshi%2C+Dhiraj&rft.au=Yu%2C+Jie&rft.au=Gallagher%2C+Andrew&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGeotagging" class="Z3988"></span></li></ul> <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=Geotagging&action=edit&section=19" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> Media related to <a href="https://commons.wikimedia.org/wiki/Category:Geotagging" class="extiw" title="commons:Category:Geotagging">Geotagging</a> at Wikimedia Commons</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 ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" 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class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Database" title="Database">Databases</a></li> <li><a href="/wiki/Hypertext" title="Hypertext">Hypertext</a></li> <li><a href="/wiki/Internet" title="Internet">Internet</a></li> <li><a href="/wiki/Ontology_(computer_science)" class="mw-redirect" title="Ontology (computer science)">Ontologies</a></li> <li><a href="/wiki/Semantics_(computer_science)" title="Semantics (computer science)">Semantics</a></li> <li><a href="/wiki/Semantic_network" title="Semantic network">Semantic networks</a></li> <li><a href="/wiki/World_Wide_Web" title="World Wide Web">World Wide Web</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Sub-topics</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dataspaces" class="mw-redirect" title="Dataspaces">Dataspaces</a></li> <li><a href="/wiki/Hyperdata" title="Hyperdata">Hyperdata</a></li> <li><a href="/wiki/Linked_data" title="Linked data">Linked data</a></li> <li><a href="/wiki/Rule-based_system" title="Rule-based system">Rule-based systems</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Applications</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Semantic_analytics" title="Semantic analytics">Semantic analytics</a></li> <li><a href="/wiki/Semantic_broker" title="Semantic broker">Semantic broker</a></li> <li><a href="/wiki/Semantic_computing" title="Semantic computing">Semantic computing</a></li> <li><a href="/wiki/Semantic_mapper" title="Semantic mapper">Semantic mapper</a></li> <li><a href="/wiki/Semantic_matching" title="Semantic matching">Semantic matching</a></li> <li><a href="/wiki/Semantic_publishing" title="Semantic publishing">Semantic publishing</a></li> <li><a href="/wiki/Semantic_reasoner" title="Semantic reasoner">Semantic reasoner</a></li> <li><a href="/wiki/Semantic_search" title="Semantic search">Semantic search</a></li> <li><a href="/wiki/Semantic_service-oriented_architecture" title="Semantic service-oriented architecture">Semantic service-oriented architecture</a></li> <li><a href="/wiki/Semantic_wiki" title="Semantic wiki">Semantic wiki</a></li> <li><a href="/wiki/Solid_(web_decentralization_project)" title="Solid (web decentralization project)">Solid</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related topics</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Collective_intelligence" title="Collective intelligence">Collective intelligence</a></li> <li><a href="/wiki/Description_logic" title="Description logic">Description logic</a></li> <li><a href="/wiki/Folksonomy" title="Folksonomy">Folksonomy</a></li> <li><a class="mw-selflink selflink">Geotagging</a></li> <li><a href="/wiki/Information_architecture" title="Information architecture">Information architecture</a></li> <li><a href="/wiki/IXBRL" class="mw-redirect" title="IXBRL">iXBRL</a></li> <li><a href="/wiki/Knowledge_extraction" title="Knowledge extraction">Knowledge extraction</a></li> <li><a href="/wiki/Knowledge_management" title="Knowledge management">Knowledge management</a></li> <li><a href="/wiki/Knowledge_representation_and_reasoning" title="Knowledge representation and reasoning">Knowledge representation and reasoning</a></li> <li><a href="/wiki/Library_2.0" title="Library 2.0">Library 2.0</a></li> <li><a href="/wiki/Digital_library" title="Digital library">Digital library</a></li> <li><a href="/wiki/Digital_humanities" title="Digital humanities">Digital humanities</a></li> <li><a href="/wiki/Metadata" title="Metadata">Metadata</a></li> <li><a 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href="/wiki/Internationalized_Resource_Identifier" title="Internationalized Resource Identifier">IRI</a> <ul><li><small><a href="/wiki/Uniform_Resource_Identifier" title="Uniform Resource Identifier">URI</a></small></li></ul></li> <li><a href="/wiki/Resource_Description_Framework" title="Resource Description Framework">RDF</a> <ul><li><small><a href="/wiki/Semantic_triple" title="Semantic triple">triples</a></small></li> <li><small><a href="/wiki/RDF/XML" title="RDF/XML">RDF/XML</a></small></li> <li><small><a href="/wiki/JSON-LD" title="JSON-LD">JSON-LD</a></small></li> <li><small><a href="/wiki/Turtle_(syntax)" title="Turtle (syntax)">Turtle</a></small></li> <li><small><a href="/wiki/TriG_(syntax)" title="TriG (syntax)">TriG</a></small></li> <li><small><a href="/wiki/Notation3" title="Notation3">Notation3</a></small></li> <li><small><a href="/wiki/N-Triples" title="N-Triples">N-Triples</a></small></li> <li><small><a href="/wiki/TriX_(serialization_format)" title="TriX (serialization format)">TriX</a> (no W3C standard)</small></li></ul></li> <li><a href="/wiki/Research_Resource_Identifier" class="mw-redirect" title="Research Resource Identifier">RRID</a></li> <li><a href="/wiki/SPARQL" title="SPARQL">SPARQL</a></li> <li><a href="/wiki/XML" title="XML">XML</a></li> <li><a href="/wiki/Semantic_HTML" title="Semantic HTML">Semantic HTML</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Schemas, ontologies and rules</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/Common_Logic" title="Common Logic">Common Logic</a></li> <li><a href="/wiki/Web_Ontology_Language" title="Web Ontology Language">OWL</a></li> <li><a href="/wiki/RDF_Schema" title="RDF Schema">RDFS</a></li> <li><a href="/wiki/Rule_Interchange_Format" title="Rule Interchange Format">Rule Interchange Format</a></li> <li><a href="/wiki/Semantic_Web_Rule_Language" title="Semantic Web Rule Language">Semantic Web Rule Language</a></li> <li><a href="/w/index.php?title=Application-Level_Profile_Semantics_(ALPS)&action=edit&redlink=1" class="new" title="Application-Level Profile Semantics (ALPS) (page does not exist)">ALPS</a></li> <li><a href="/wiki/SHACL" title="SHACL">SHACL</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Semantic annotation</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/Embedded_RDF" title="Embedded RDF">eRDF</a></li> <li><a href="/wiki/GRDDL" title="GRDDL">GRDDL</a></li> <li><a href="/wiki/Microdata_(HTML)" title="Microdata (HTML)">Microdata</a></li> <li><a href="/wiki/Microformat" title="Microformat">Microformats</a></li> <li><a href="/wiki/RDFa" title="RDFa">RDFa</a></li> <li><a href="/wiki/SAWSDL" title="SAWSDL">SAWSDL</a></li> <li><a href="/wiki/Facebook_Platform" title="Facebook Platform">Facebook Platform</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Common vocabularies</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/DOAP" title="DOAP">DOAP</a></li> <li><a href="/wiki/Dublin_Core" title="Dublin Core">Dublin Core</a></li> <li><a href="/wiki/FOAF" title="FOAF">FOAF</a></li> <li><a href="/wiki/Schema.org" title="Schema.org">Schema.org</a></li> <li><a href="/wiki/Semantically_Interlinked_Online_Communities" title="Semantically Interlinked Online Communities">SIOC</a></li> <li><a href="/wiki/Simple_Knowledge_Organization_System" title="Simple Knowledge Organization System">SKOS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Microformat vocabularies</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/HAtom" title="HAtom">hAtom</a></li> <li><a href="/wiki/HCalendar" title="HCalendar">hCalendar</a></li> <li><a href="/wiki/HCard" title="HCard">hCard</a></li> <li><a href="/wiki/HProduct" title="HProduct">hProduct</a></li> <li><a href="/wiki/HRecipe" title="HRecipe">hRecipe</a></li> <li><a href="/wiki/HReview" title="HReview">hReview</a></li></ul> </div></td></tr></tbody></table><div></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="Web_syndication" style="padding:3px"><table class="nowraplinks hlist mw-collapsible mw-collapsed 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:Web_syndication" title="Template:Web syndication"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Web_syndication" title="Template talk:Web syndication"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Web_syndication" title="Special:EditPage/Template:Web syndication"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Web_syndication" style="font-size:114%;margin:0 4em"><a href="/wiki/Web_syndication" title="Web syndication">Web syndication</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <dl><dt>History</dt> <dd><a href="/wiki/History_of_blogging" title="History of blogging">Blogging</a></dd> <dd><a href="/wiki/History_of_podcasting" title="History of podcasting">Podcasting</a></dd> <dd><a href="/wiki/Vlog#History" title="Vlog">Vlogging</a></dd> <dd><a href="/wiki/History_of_web_syndication_technology" title="History of web syndication technology">Web syndication technology</a></dd></dl> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Niche_blogging" title="Niche blogging">Types</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><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Art_blog" title="Art blog">Art</a></li> <li><a href="/wiki/Mormon_blogosphere" title="Mormon blogosphere">Bloggernacle</a></li> <li><a href="/wiki/Classical_music_blog" title="Classical music blog">Classical music</a></li> <li><a href="/wiki/Corporate_blog" title="Corporate blog">Corporate</a></li> <li><a href="/wiki/Dream_diary" title="Dream diary">Dream diary</a></li> <li><a href="/wiki/Edublog" title="Edublog">Edublog</a></li> <li><a href="/wiki/Electronic_journal" class="mw-redirect" title="Electronic journal">Electronic journal</a></li> <li><a href="/wiki/Astroturfing" title="Astroturfing">Fake</a></li> <li><a href="/wiki/List_of_family-and-homemaking_blogs" title="List of family-and-homemaking blogs">Family</a></li> <li><a href="/wiki/Fashion_blog" title="Fashion blog">Fashion</a></li> <li><a href="/wiki/Food_blogging" title="Food blogging">Food</a></li> <li><a href="/wiki/Health_blog" title="Health blog">Health</a></li> <li><a href="/wiki/Blawg" class="mw-redirect" title="Blawg">Law</a></li> <li><a href="/wiki/Lifelog" title="Lifelog">Lifelog</a></li> <li><a href="/wiki/MP3_blog" title="MP3 blog">MP3</a></li> <li><a href="/wiki/Citizen_journalism" title="Citizen journalism">News</a></li> <li><a href="/wiki/Photoblog" title="Photoblog">Photoblog</a></li> <li><a href="/wiki/Police_blog" title="Police blog">Police</a></li> <li><a href="/wiki/Blog#Political_impact" title="Blog">Political</a></li> <li><a href="/wiki/Project_diary" title="Project diary">Project</a></li> <li><a href="/wiki/Reverse_blog" title="Reverse blog">Reverse</a></li> <li><a href="/wiki/Travel_blog" class="mw-redirect" title="Travel blog">Travel</a></li> <li><a href="/wiki/Warblog" class="mw-redirect" title="Warblog">Warblog</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technology</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:1%">General</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/BitTorrent" title="BitTorrent">BitTorrent</a></li> <li><a href="/wiki/Feed_URI_scheme" title="Feed URI scheme">Feed URI scheme</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Features</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/Linkback" title="Linkback">Linkback</a></li> <li><a href="/wiki/Permalink" title="Permalink">Permalink</a></li> <li><a href="/wiki/Ping_(blogging)" title="Ping (blogging)">Ping</a></li> <li><a href="/wiki/Pingback" title="Pingback">Pingback</a></li> <li><a href="/wiki/Reblogging" title="Reblogging">Reblogging</a></li> <li><a href="/wiki/Refback" title="Refback">Refback</a></li> <li><a href="/wiki/Rollback_(data_management)" title="Rollback (data management)">Rollback</a></li> <li><a href="/wiki/Trackback" title="Trackback">Trackback</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Mechanism</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/Thread_(Internet)" class="mw-redirect" title="Thread (Internet)">Thread</a></li> <li><a class="mw-selflink selflink">Geotagging</a></li> <li><a href="/wiki/RSS_enclosure" title="RSS enclosure">RSS enclosure</a></li> <li><a href="/wiki/FeedSync#Examples" title="FeedSync">Synchronization</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Memetics" title="Memetics">Memetics</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/Atom_(web_standard)" title="Atom (web standard)">Atom feed</a></li> <li><a href="/wiki/Data_feed" title="Data feed">Data feed</a></li> <li><a href="/wiki/Photofeed" title="Photofeed">Photofeed</a></li> <li><a href="/wiki/Product_feed" title="Product feed">Product feed</a></li> <li><a href="/wiki/Resource_Description_Framework" title="Resource Description Framework">RDF feed</a></li> <li><a href="/wiki/Web_feed" title="Web feed">Web feed</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/RSS" title="RSS">RSS</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/GeoRSS" title="GeoRSS">GeoRSS</a></li> <li><a href="/wiki/Media_RSS" title="Media RSS">MRSS</a></li> <li><a href="/wiki/RSS_TV" title="RSS TV">RSS TV</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Social</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/Inter-process_communication" title="Inter-process communication">Inter-process communication</a></li> <li><a href="/w/index.php?title=Livemark&action=edit&redlink=1" class="new" title="Livemark (page does not exist)">Livemark</a></li> <li><a href="/wiki/Mashup_(web_application_hybrid)" title="Mashup (web application hybrid)">Mashup</a></li> <li><a href="/wiki/Reference_(computer_science)" title="Reference (computer science)">Referencing</a></li> <li><a href="/wiki/RSS_editor" title="RSS editor">RSS editor</a></li> <li><a href="/wiki/RSS_tracking" title="RSS tracking">RSS tracking</a></li> <li><a href="/wiki/Streaming_media" title="Streaming media">Streaming media</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Standard</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/OPML" title="OPML">OPML</a></li> <li><a href="/wiki/RSS_Advisory_Board" title="RSS Advisory Board">RSS Advisory Board</a></li> <li><a href="/wiki/Usenet" title="Usenet">Usenet</a></li> <li><a href="/wiki/World_Wide_Web" title="World Wide Web">World Wide Web</a></li> <li><a href="/wiki/XBEL" title="XBEL">XBEL</a></li> <li><a href="/wiki/XOXO_(microformat)" title="XOXO (microformat)">XOXO</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Form</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><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Category:Audio_podcasts" title="Category:Audio podcasts">Audio podcast</a></li> <li><a href="/wiki/Enhanced_podcast" class="mw-redirect" title="Enhanced podcast">Enhanced podcast</a></li> <li><a href="/wiki/Mobilecast" class="mw-redirect" title="Mobilecast">Mobilecast</a></li> <li><a href="/wiki/Narrowcasting" title="Narrowcasting">Narrowcasting</a></li> <li><a href="/wiki/Peercasting" title="Peercasting">Peercasting</a></li> <li><a href="/wiki/Screencast" title="Screencast">Screencast</a></li> <li><a href="/wiki/Slidecasting" class="mw-redirect" title="Slidecasting">Slidecasting</a></li> <li><a href="/wiki/Videocast" class="mw-redirect" title="Videocast">Videocast</a></li> <li><a href="/wiki/Webcomic" title="Webcomic">Webcomic</a></li> <li><a href="/wiki/Webtoon" title="Webtoon">Webtoon</a></li> <li><a href="/wiki/Web_series" title="Web series">Web series</a></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Anonymous_blog" title="Anonymous blog">Anonymous blogging</a></li> <li><a href="/wiki/Blog#Types" title="Blog">Collaborative blog</a></li> <li><a href="/wiki/Columnist" title="Columnist">Columnist</a></li> <li><a href="/wiki/Instant_messaging" title="Instant messaging">Instant messaging</a></li> <li><a href="/wiki/Liveblogging" title="Liveblogging">Liveblogging</a></li> <li><a href="/wiki/Microblogging" title="Microblogging">Microblog</a></li> <li><a href="/wiki/Mobile_blogging" title="Mobile blogging">Mobile blogging</a></li> <li><a href="/wiki/Spam_blog" title="Spam blog">Spam blog</a></li> <li><a href="/wiki/Video_blog" class="mw-redirect" title="Video blog">Video blogging</a></li> <li><a href="/wiki/Motovlog" title="Motovlog">Motovlogging</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Media</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:1%"><a href="/wiki/Alternative_media" title="Alternative media">Alternative media</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/Blog_carnival" class="mw-redirect" title="Blog carnival">Carnivals</a></li> <li><a href="/wiki/Blog_fiction" title="Blog fiction">Fiction</a></li> <li><a href="/wiki/Journalism" title="Journalism">Journalism</a> <ul><li><a href="/wiki/Citizen_journalism" title="Citizen journalism">Citizen</a></li> <li><a href="/wiki/Database_journalism" title="Database journalism">Database</a></li></ul></li> <li><a href="/wiki/Online_diary" title="Online diary">Online diary</a></li> <li><a href="/wiki/List_of_search_engines#Blog" title="List of search engines">Search engines</a></li> <li><a href="/wiki/Sideblog" title="Sideblog">Sideblog</a></li> <li><a href="/wiki/Blog" title="Blog">Software</a></li> <li><a href="/wiki/Web_directory" title="Web directory">Web directory</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Micromedia</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/Comparison_of_feed_aggregators" title="Comparison of feed aggregators">Aggregation</a> <ul><li><a href="/wiki/News_aggregator" title="News aggregator">News</a></li> <li><a href="/wiki/Poll_aggregator" title="Poll aggregator">Poll</a></li> <li><a href="/wiki/Review_aggregator" title="Review aggregator">Review</a></li> <li><a href="/wiki/Search_aggregator" title="Search aggregator">Search</a></li> <li><a href="/wiki/Video_aggregator" title="Video aggregator">Video</a></li></ul></li> <li><a href="/wiki/Atom_(Web_standard)" class="mw-redirect" title="Atom (Web standard)">Atom</a></li> <li><a href="/wiki/Atom_(Web_standard)" class="mw-redirect" title="Atom (Web standard)">AtomPub</a></li> <li><a href="/wiki/Broadcatching" title="Broadcatching">Broadcatching</a></li> <li><a href="/wiki/Hashtag" title="Hashtag">Hashtag</a></li> <li><a href="/wiki/NewsML" class="mw-redirect" title="NewsML">NewsML</a> <ul><li><a href="/wiki/NewsML_1" class="mw-redirect" title="NewsML 1">1</a></li> <li><a href="/wiki/NewsML-G2" class="mw-redirect" title="NewsML-G2">G2</a></li></ul></li> <li><a href="/wiki/Communication" title="Communication">Social communication</a></li> <li><a href="/wiki/Social_software" title="Social software">Social software</a></li> <li><a href="/wiki/Web_Slice" title="Web Slice">Web Slice</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</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/Blogosphere" title="Blogosphere">Blogosphere</a></li> <li><a href="/wiki/Escribitionist" title="Escribitionist">Escribitionist</a></li> <li><a href="/wiki/Glossary_of_blogging" title="Glossary of blogging">Glossary of blogging</a></li> <li><a href="/wiki/Pay-per-click" title="Pay-per-click">Pay per click</a></li> <li><a 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