Inside WorldCat

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The WorldCat bibliographic catalog includes millions of records covering everything that is available to users in the library. The WorldCat knowledge base combines data about electronic library holdings with access links so users can find and access content. The WorldCat registry uses information about library locations and services to connect information seekers with their local libraries." />  <meta name="DC.Title" content="Inside WorldCat" /> <meta name="DCTERMS.Alternative" content="Inside WorldCat"> <meta name="DC.Subject" content="WorldCat" /> <meta name="DC.Description" content="WorldCat consists of three components: a bibliographic catalog, a knowledge base and a registry for library information. The WorldCat bibliographic catalog includes millions of records covering everything that is available to users in the library. The WorldCat knowledge base combines data about electronic library holdings with access links so users can find and access content. 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margin: 24px 0 48px; font-size: 72px; line-height: 76px; letter-spacing: -2px; color: #333F48; } @media screen and (max-width:360px) { .product-page h1{ font-size: 56px; line-height: 62px; } } </style></div> <div class="text parbase section"> <h1>Inside WorldCat</h1> </div> <div class="text parbase section"> <p class="page-intro"><strong>WorldCat consists of three components:</strong> a <a href="#catalog">bibliographic catalog</a>, a <a href="#kb">knowledge base</a>, and a <a href="#registry">registry</a> for library information.</p> </div> <div class="text parbase section"> <p><a name="catalog"></a></p> </div> <div class="text parbase section"> <p style="margin: 0;"><a name="catalog"></a> </p> </div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt6" id="headline-catalog"> <div class="parsys_column cq-colctrl-lt6-c0"> <div class="col0 parsys"><div class="image parbase section"> <figure class="figure-stack-image"> <img src="/content/marketing/publish/en_us/worldcat/inside-worldcat/_jcr_content/par/parsyscolumncontrol__0/col0/image_5d0f.img.png/1725649631525.png" alt="icon for the WorldCat bibliographic catalog" title="icon" class="cq-dd-image section-icon catalog"> <figcaption> <div class="img-caption"></div> <div class="img-attribution"></div> </figcaption> </figure></div> </div> </div> <div class="parsys_column cq-colctrl-lt6-c1"> <div class="col1 parsys"><div class="text parbase section"> <h2 class="section blue ptop"><a name="catalog-content-cont" class="offset-anchor"></a>The worldwide catalog of library resources</h2> </div> </div> </div> </div></div> <div class="text parbase section"> <p><strong>The WorldCat bibliographic catalog includes everything that’s available to users in the library.</strong> Beyond books and print journals, the catalog of physical materials includes DVDs, historic photos, video games, musical scores, newspapers, webpages and many other standard items. It also includes unique items, such as <a href="http://www.worldcat.org/oclc/226218374">2,700-year-old jewelry</a> and <a href="https://www.worldcat.org/title/1312354375">memorabilia from historic car races</a>.</p> </div> <div class="text parbase section"> <p>In 1971, librarians in Alden Library at Ohio University added the first bibliographic records to what was then known as the OCLC Online Union Catalog. Within eight years, the catalog already included more than five million records. Now known as WorldCat, the catalog today includes millions of records and billions of holdings.</p> <p>As the WorldCat bibliographic catalog continues to grow in quantity, efforts to improve the quality also increase. Professional catalogers all over the world consistently improve WorldCat records to make them as complete and useful as possible. This cooperative resource simplifies cataloging, maintenance, interlibrary loan and discovery tasks for libraries worldwide.</p> <p><a class="cta-box-link" href="https://www.oclc.org/en/worldcat/cooperative-quality.html">Learn more about WorldCat data quality</a></p> </div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt0" id="catalog-content-cont"> <div class="parsys_column cq-colctrl-lt0-c0"> <div class="col0 parsys"><div class="customjavascript section"> <h3 class="timeline">How WorldCat evolves</h3> <p>WorldCat has continued to keep up with the way modern library users prefer to consume media. From print books to streaming video and beyond, you can find it in WorldCat. Here are a just a few of the many formats that have been added to WorldCat over the years.</p> <div id="format-timeline" tabindex="0"> <table cellspacing="0" cellpadding="0" border="0"> <tr><th colspan="2">WorldCat launches with:</td></tr> <tr> <td colspan="2"> <p class="format bk">Books</p> <p class="format th">Theses</p> <p class="format map">Atlases</p> <p class="format art">Articles</p> <p class="format sc">Musical scores</p> </td> </tr> <tr> <th>1971</th> <td> <p class="format se">Serials</p> <p class="format im">Photos/Images</p> <p class="format fi">Films</p> <p class="format cs">Audio cassettes</p> <p class="format so">Sound recordings</p> </td> </tr> <tr> <th>1975</th> <td> <p class="format np">Newspapers</p> <p class="format cf">Computer files</p> </td> </tr> <tr> <th>1980</th> <td> <p class="format fd">Floppy discs</p> </td> </tr> <tr> <th class="approx">1986</th> <td> <p class="format cda">Audio CDs</p> </td> </tr> <tr> <th>1987</th> <td> <p class="format cdr">CD-ROMs</p> </td> </tr> <tr> <th>1996</th> <td> <p class="format dvd">DVD-ROMs</p> </td> </tr> <tr> <th>2000</th> <td> <p class="format sv">Streaming video</p> </td> </tr> <tr> <th class="approx">2008</th> <td> <p class="format blu">Blu-ray discs</p> </td> </tr> </table> <p class="disclaimer-date"><em>Italicized</em> years are approximate</p> </div> </div> </div> </div> <div class="parsys_column cq-colctrl-lt0-c1"> <div class="col1 parsys"><div class="text parbase section"> <div class="barquote ltblue"> <div class="barquote-header"> <div class="barquote-image"> <img width="48" height="48" src="/content/dam/oclc/worldcat/update/photo_scott_seaman.png" alt="Scott Seaman [photo]"/> </div> <h3>“The world’s knowledge…”</h3> </div> <p class="barquote-text">“Modern scholarship would not have been possible without the creation of WorldCat. … To have the world’s knowledge cataloged and made available has just been an extraordinary miracle. And to have been the first contributor is almost unthinkable. It’s such an honor.”</p> <p class="barquote-attr"><strong>Scott Seaman</strong><br /> Dean of Libraries, Ohio University<br /> Athens, Ohio, United States</p> </div> </div> </div> </div> </div></div> <div class="text parbase section"> <hr /> <h3>Vital statistics</h3> </div> <div class="text parbase section"> <p class="stat-label large">WorldCat growth</p> </div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt0"> <div class="parsys_column cq-colctrl-lt0-c0"> <div class="col0 parsys"><div class="text parbase section"> <p class="stat-label large">Number of bibliographic records</p> <p class="stat-number large"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/total-records">559,887,458</span> <span class="as-of-date">(as of <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/as-of-date">June 2024</span>)</span></p> </div> </div> </div> <div class="parsys_column cq-colctrl-lt0-c1"> <div class="col1 parsys"><div class="text parbase section"> <p class="stat-label large">Number of holdings</p> <p class="stat-number large"><span name="Sprinkles:statistics/worldcat/total-holdings" class="cq-rte-sprinkles">3,446,566,579</span> <span class="as-of-date">(as of <span name="Sprinkles:statistics/worldcat/as-of-date" class="cq-rte-sprinkles">June 2024</span>)</span></p> </div> </div> </div> </div></div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt5"> <div class="parsys_column cq-colctrl-lt5-c0"> <div class="col0 parsys"><div class="customjavascript section"> <style> /* stat border-width = 5 x percentage, rounded up */ .stat-growth.one{border-bottom-width: 15.7px} .stat-growth.two{border-bottom-width: 13px} .stat-growth.three{border-bottom-width: 34.4px} .stat-growth.four{border-bottom-width: 19.1px} </style></div> <div class="text parbase section"> <div id="wcgrowth"> <div class="stat-growth-cont"> <div class="stat-growth one"> <p class="growth-number"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/growth-percent-bib-records">+3.14%</span></p> </div> <p class="growth-label">Bibliographic records</p> </div> <div class="stat-growth-cont"> <div class="stat-growth two"> <p class="growth-number"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/growth-percent-holdings">+4.38%</span></p> </div> <p class="growth-label">Holdings</p> </div> <div class="stat-growth-cont"> <div class="stat-growth three"> <p class="growth-number"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/growth-percent-local-holdings">+5.59%</span></p> </div> <p class="growth-label">Local holdings</p> </div> <div class="stat-growth-cont"> <div class="stat-growth four"> <p class="growth-number"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/growth-percent-local-bibliographic-data">+5.77%</span></p> </div> <p class="growth-label">Local bibliographic data</p> </div> <p class="as-of-date"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/growth-percent-date-span">(July 2023–June 2024)</span></p> </div> </div> </div> </div> <div class="parsys_column cq-colctrl-lt5-c1"> <div class="col1 parsys"><div class="text parbase section"> <p class="stat-label small">WorldCat gets <strong><span name="Sprinkles:statistics/worldcat/records-per-second" class="cq-rte-sprinkles">more than one</span></strong> new record</p> <p class="stat-number small"><span name="Sprinkles:statistics/worldcat/seconds" class="cq-rte-sprinkles">every second</span></p> </div> <div class="text parbase section"> <p style="margin: 0 0 4px; font-weight: 300; font-size: 18px; line-height: 22px; letter-spacing: 0px; color: #888b8d;">Members fill an ILL request</p> <p style="margin: 0 0 24px; font-weight: 400; font-size: 32px; line-height: 36px; letter-spacing: 0px; color: #00afd7;"><span name="Sprinkles:statistics/worldcat/sharing-request" class="cq-rte-sprinkles">every second</span></p> </div> </div> </div> </div></div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-default" id="watch-worldcat-grow"> <div class="parsys_column cq-colctrl-default-c0"> <div class="col0 parsys"><div class="text parbase section"> <h4>Watch WorldCat grow.</h4> </div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt5"> <div class="parsys_column cq-colctrl-lt5-c0"> <div class="col0 parsys"><div class="text parbase section"> <p>Watch in real time as librarians and information service professionals from all over the world contribute records to WorldCat.</p> </div> </div> </div> <div class="parsys_column cq-colctrl-lt5-c1"> <div class="col1 parsys"><div class="text parbase section"> <p class="wwg-launch desktop"><a href="https://www.oclc.org/en/worldcat/watch-worldcat-grow-popup.html" class="cta-box-link white" id="wwg-launch-button">Launch</a></p> <p class="wwg-launch mobile"><a href="https://www.oclc.org/en/worldcat/watch-worldcat-grow-popup.html" class="cta-box-link white">Launch</a></p> </div> <div class="customjavascript section"> <script> var wwgLaunchButton = document.querySelector("#wwg-launch-button"); wwgLaunchButton.addEventListener("click", launchPopup, false); wwgLaunchButton.removeAttribute("href"); function launchPopup() { window.open('/content/marketing/publish/en_us/worldcat/watch-worldcat-grow-popup.html','popup','width=1080,height=772'); return false; } </script></div> </div> </div> </div></div> </div> </div> </div></div> <div class="customjavascript section"> <style> /* Non-English/English language percentages -- must add up to 100 */ .lang-eng-noneng-percent-cont.nonenglish{width:61%} .lang-eng-noneng-percent-cont.english{width:39%} </style></div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt5"> <div class="parsys_column cq-colctrl-lt5-c0"> <div class="col0 parsys"><div class="text parbase section"> <p class="stat-label large">Language composition of WorldCat items</p> <div class="languages-eng-noneng clearfix"> <div class="lang-eng-noneng-percent-cont nonenglish"> <div class="lang-eng-noneng-percent"> <p class="stat-label">Non-English</p> <p class="stat-number large"><span name="Sprinkles:statistics/worldcat/non-english-percentage" class="cq-rte-sprinkles">61%</span></p> </div> </div> <div class="lang-eng-noneng-percent-cont english"> <div class="lang-eng-noneng-percent"> <p class="stat-label">English</p> <p class="stat-number large"><span name="Sprinkles:statistics/worldcat/languages/english-percentage" class="cq-rte-sprinkles">39%</span></p> </div> </div> </div> <p class="as-of-date">(as of <span name="Sprinkles:statistics/worldcat/language-as-of-date" class="cq-rte-sprinkles">August 2024</span>)</p> </div> </div> </div> <div class="parsys_column cq-colctrl-lt5-c1"> <div class="col1 parsys"><div class="text parbase section"> <p class="stat-label large">Number of languages</p> <p class="stat-number large nomargin"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages">486</span> <span class="as-of-date">(as of <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/language-as-of-date">August 2024</span>)</span></p> </div> </div> </div> </div></div> <div class="customjavascript section"> <style> /* number of records in millions becomes border pixel width; e.g. 34 million = border-left-width: 34px */ /* top language bar graph width */ .lang-top-cont.language-01{width:222px} .lang-top-cont.language-02{border-left-width: 67px} .lang-top-cont.language-03{border-left-width: 51px} .lang-top-cont.language-04{border-left-width: 29px} .lang-top-cont.language-05{border-left-width: 18px} .lang-top-cont.language-06{border-left-width: 15px} .lang-top-cont.language-07{border-left-width: 12px} .lang-top-cont.language-08{border-left-width: 8px} .lang-top-cont.language-09{border-left-width: 8px} .lang-top-cont.language-10{border-left-width: 8px} /* bar graph width for top scripts section */ .lang-top-cont.language-11{border-left-width: 32px} .lang-top-cont.language-12{border-left-width: 3.9px} .lang-top-cont.language-13{border-left-width: 3.4px} .lang-top-cont.language-14{border-left-width: 3px} .lang-top-cont.language-15{border-left-width: 1.2px} .lang-top-cont.language-16{border-left-width: 0.6px} .lang-top-cont.language-17{border-left-width: 0.1px} .lang-top-cont.language-18{border-left-width: 0.1px} .lang-top-cont.language-19{border-left-width: 0px} .lang-top-cont.language-20{border-left-width: 0px} </style></div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-default" id="more-wclang-stats"> <div class="parsys_column cq-colctrl-default-c0"> <div class="col0 parsys"><div class="showhide parbase section"> <div class="show-hide "> <h3 class="show-hide-trig show-hide-closed" title="">More language statistics</h3> <div class="show-hide-cont parsys"><div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt2"> <div class="parsys_column cq-colctrl-lt2-c0"> <div class="col0 parsys"><div class="text parbase section"> <div class="languages-top"> <p class="stat-label medium">Top 10 languages</p> <div class="lang-top-cont language-01"> <p class="stat-name-percent"><b>English</b></p> <p class="stat-name-percent"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/english-percentage">39%</span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/english-records">222.4 million</span></p> </div> <div class="lang-top-cont language-02"> <p class="stat-name-percent"><b>German</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/german-percentage">12%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/german-records">66.9 million</span></p> </div> <div class="lang-top-cont language-03"> <p class="stat-name-percent"><b>French</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/french-percentage">9%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/french-records">50.9 million</span></p> </div> <div class="lang-top-cont language-04"> <p class="stat-name-percent"><b>Spanish</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/spanish-percentage">5%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/spanish-records">29.3 million</span></p> </div> <div class="lang-top-cont language-05"> <p class="stat-name-percent"><b>Chinese</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/chinese-percentage">3%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/chinese-records">17.9 million</span></p> </div> <div class="lang-top-cont language-06"> <p class="stat-name-percent"><b>Italian</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/italian-percentage">3%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/italian-records">14.8 million</span></p> </div> <div class="lang-top-cont language-07"> <p class="stat-name-percent"><b>Japanese</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/japanese-percentage">2%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/japanese-records">12.1 million</span></p> </div> <div class="lang-top-cont language-08"> <p class="stat-name-percent"><b>Polish</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/polish-percentage">1%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/polish-records">8.4 million</span></p> </div> <div class="lang-top-cont language-09"> <p class="stat-name-percent"><b>Dutch</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/dutch-percentage">1%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/dutch-records">8.3 million</span></p> </div> <div class="lang-top-cont language-10"> <p class="stat-name-percent"><b>Russian</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/russian-percentage">1%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/russian-records">7.9 million</span></p> </div> </div> <p class="as-of-date">(as of <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/language-as-of-date">August 2024</span>)</p> </div> </div> </div> <div class="parsys_column cq-colctrl-lt2-c1"> <div class="col1 parsys"><div class="text parbase section"> <p class="stat-label medium">1+ million records</p> <ul class="stat-lang"> <li><b>Latin</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/latin-records">7.5 million</span></li> <li><b>Swedish</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/swedish-records">6.7 million</span></li> <li><b>Danish</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/danish-records">4.6 million</span></li> <li><b>Portuguese</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/portuguese-records">3.7 million</span></li> <li><b>Arabic</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/arabic-records">3.6 million</span></li> <li><b>Hebrew</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/hebrew-records">3.0 million</span></li> <li><b>Korean</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/korean-records">3.0 million</span></li> <li><b>Slovenian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/slovenian-records">2.8 million</span></li> <li><b>Czech</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/czech-records">2.1 million</span></li> <li><b>Hungarian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/hungarian-records">1.7 million</span></li> <li><b>Catalan</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/catalan-records">1.6 million</span></li> <li><b>Thai</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/thai-records">1.5 million</span></li> <li><b>Finnish</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/finnish-records">1.2 million</span></li> <li><b>Romanian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/romanian-records">1.1 million</span></li> </ul> <p class="stat-label medium">500,000–1 million records</p> <ul class="stat-lang"> <li><b>Turkish</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/turkish-records">987,000</span></li> <li><b>Indonesian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/indonesian-records">862,000</span></li> <li><b>Ukrainian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/ukrainian-records">838,000</span></li> <li><b>Greek, Modern (1453-)</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/greekmodern-records">725,000</span></li> <li><b>Norwegian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/norwegian-records">717,000</span></li> <li><b>Croatian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/croatian-records">649,000</span></li> <li><b>Serbian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/serbian-records">548,000</span></li> <li><b>Persian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/persian-records">544,000</span></li> <li><b>Malay</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/malay-records">543,000</span></li> <li><b>Vietnamese</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/vietnamese-records">502,000</span></li> </ul> </div> </div> </div> <div class="parsys_column cq-colctrl-lt2-c2"> <div class="col2 parsys"><div class="text parbase section"> <p class="stat-label medium">250,000–500,000 records</p> <ul class="stat-lang"> <li><b>Afrikaans</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/afrikaans-records">405,000</span></li> <li><b>Hindi</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/hindi-records">369,000</span></li> <li><b>Bulgarian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/bulgarian-records">347,000</span></li> <li><b>Yiddish</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/yiddish-records">337,000</span></li> <li><b>Greek, Ancient (to 1453)</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/greekancient-records">323,000</span></li> <li><b>Tamil</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/tamil-records">315,000</span></li> <li><b>Welsh</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/welsh-records">287,000</span></li> <li><b>Urdu</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/urdu-records">268,000</span></li> </ul> <p class="stat-label medium">100,000–250,000 records</p> <ul class="stat-lang"> <li><b>Slovak</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/slovak-records">231,000</span></li> <li><b>Frisian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/frisian-records">221,000</span></li> <li><b>Basque</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/basque-records">220,000</span></li> <li><b>Norwegian (Bokmål)</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/norwegianBokmal-records">196,000</span></li> <li><b>Lithuanian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/lithuanian-records">169,000</span></li> <li><b>Bengali</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/bengali-records">167,000</span></li> <li><b>Galician</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/galician-records">158,000</span></li> <li><b>Sanskrit</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/sanskrit-records">138,000</span></li> <li><b>Icelandic</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/icelandic-records">134,000</span></li> <li><b>Armenian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/armenian-records">131,000</span></li> <li><b>Tibetan</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/tibetan-records">112,000</span></li> <li><b>Estonian</b><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/languages/estonian-records">105,000</span></li> </ul> </div> </div> </div> </div></div> </div> </div> </div> </div> </div> </div></div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-default" id="more-wclang-stats"> <div class="parsys_column cq-colctrl-default-c0"> <div class="col0 parsys"><div class="showhide parbase section"> <div class="show-hide "> <h3 class="show-hide-trig show-hide-closed" title="Scripts represented in WorldCat">Scripts represented in WorldCat</h3> <div class="show-hide-cont parsys"><div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt2"> <div class="parsys_column cq-colctrl-lt2-c0"> <div class="col0 parsys"><div class="text parbase section"> <p class="stat-label large">Non-Latin scripts represented in WorldCat</p> <p class="stat-number large"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts">48</span></p> <p><span class="as-of-date">(as of <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/as-of-date">June 2024</span>)</span></p> </div> </div> </div> <div class="parsys_column cq-colctrl-lt2-c1"> <div class="col1 parsys"><div class="text parbase section"> <div class="languages-top"> <p class="stat-label medium">Top 10 non-Latin scripts</p> <div class="lang-top-cont language-11"> <p class="stat-name-percent"><b>CJK</b><br /> <span class="percentage"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/cjk-percent">71.9%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/cjk-scripts">32 million</span></p> </div> <div class="lang-top-cont language-12"> <p class="stat-name-percent"><b>Cyrillic</b><br /> <span class="percentage"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/cyrillic-percent">8.8%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/cyrillic-scripts">3.9 million</span></p> </div> <div class="lang-top-cont language-14"> <p class="stat-name-percent"><b>Arabic</b><br /> <span class="percentage"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/arabic-percent">7.7%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/arabic-scripts">3.4 million</span></p> </div> <div class="lang-top-cont language-13"> <p class="stat-name-percent"><b>Hebrew</b><br /> <span class="percentage"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/hebrew-percent">6.8%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/hebrew-scripts">3 million</span></p> </div> <div class="lang-top-cont language-15"> <p class="stat-name-percent"><b>Thai</b><br /> <span class="percentage"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/thai-percent">2.7%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/thai-scripts">1.2 million</span></p> </div> </div> </div> </div> </div> <div class="parsys_column cq-colctrl-lt2-c2"> <div class="col2 parsys"><div class="text parbase section"> <div class="languages-top"> <p class="stat-label medium"> </p> <div class="lang-top-cont language-16"> <p class="stat-name-percent"><b>Greek</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/greek-percent">1.3%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/greek-scripts">599,000</span></p> </div> <div class="lang-top-cont language-17"> <p class="stat-name-percent"><b>Tamil</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/tamil-percent">0.2%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/tamil-scripts">93,000</span></p> </div> <div class="lang-top-cont language-18"> <p class="stat-name-percent"><b>Armenian</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/armenian-percent">0.1%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/armenian-scripts">67,000</span></p> </div> <div class="lang-top-cont language-19"> <p class="stat-name-percent"><b>Devanagari</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/devanagari-percent">0.09%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/devanagari-scripts">44,700</span></p> </div> <div class="lang-top-cont language-20"> <p class="stat-name-percent"><b>Lao</b><span class="percentage"><br /> <span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/bengali-percent">0.02%</span></span></p> <p class="stat-records"><span class="cq-rte-sprinkles" name="Sprinkles:statistics/worldcat/scripts/scripts/bengali-scripts"></span></p> </div> </div> </div> </div> </div> </div></div> </div> </div> </div> </div> </div> </div></div> <div class="text parbase section"> <p style="margin: 0;"><a name="kb"></a> </p> </div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt6" id="headline-kb"> <div class="parsys_column cq-colctrl-lt6-c0"> <div class="col0 parsys"><div class="image parbase section"> <figure class="figure-stack-image"> <img src="/content/marketing/publish/en_us/worldcat/inside-worldcat/_jcr_content/par/parsyscolumncontrol__2/col0/image_5d0f.img.png/1725649632090.png" alt="icon for the WorldCat knowledge base" title=" " class="cq-dd-image section-icon kb"> <figcaption> <div class="img-caption"></div> <div class="img-attribution"></div> </figcaption> </figure></div> </div> </div> <div class="parsys_column cq-colctrl-lt6-c1"> <div class="col1 parsys"><div class="text parbase section"> <h2 class="section green ptop"><a class="offset-anchor" name="kb-content-cont"></a>A knowledge base to connect users to e-resources</h2> </div> </div> </div> </div></div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt0"> <div class="parsys_column cq-colctrl-lt0-c0"> <div class="col0 parsys"><div class="text parbase section"> <p><strong>The WorldCat knowledge base connects library users to the electronic content provided by their library.</strong> It combines data about a library’s e-resources with linking features that make the collections easier to find, share, manage and use. Like data in the WorldCat bibliographic catalog, knowledge base data are not tied to a particular application, so libraries can streamline electronic content workflows across multiple systems.</p> <p>The WorldCat knowledge base’s cooperatively maintained collections continue to grow with content from libraries and publishers from around the world. Because OCLC is a nonprofit, vendor-neutral global library organization, the WorldCat knowledge base is the only source that includes records from both EBSCO and ProQuest, Gale and Springer, and Wiley and Elsevier, among many other content suppliers.</p> </div> <div class="image parbase section"> <figure class="figure-stack-image"> <img src="/content/marketing/publish/en_us/worldcat/inside-worldcat/_jcr_content/par/parsyscolumncontrol__6/col0/image_b3a7.img.png/1725649632155.png" alt="Logos of some of our partners in the WorldCat knowledge base: ProQuest, EBSCO, Elsevier, Springer, Taylor and Francis, McGraw Hill Education, Wiley, Ingram, Cambridge University Press, Gale Cengage Learning, ebrary, Oxford University Press." title="wc_content_partners" class="cq-dd-image partner-logos"> <figcaption> <div class="img-caption"></div> <div class="img-attribution"></div> </figcaption> </figure></div> <div class="text parbase section"> <p>The knowledge base also includes free and open-access materials that users can find and get alongside their library’s materials. As of <span class="cq-rte-sprinkles" name="Sprinkles:statistics/knowledge-base/as-of-date">September 2024</span>, the knowledge base provides access to more than <span class="cq-rte-sprinkles" name="Sprinkles:statistics/knowledge-base/records">85,235,697</span> records and <span class="cq-rte-sprinkles" name="Sprinkles:statistics/knowledge-base/content-collections">29,601</span> content collections from <span class="cq-rte-sprinkles" name="Sprinkles:statistics/knowledge-base/providers">679</span> providers. <a href="https://help.oclc.org/@api/deki/files/12917/all-collections-list.xlsx" title="Collection availability">Download an Excel spreadsheet</a> that lists all knowledge base collections to see what’s available today.</p> <p><a class="cta-box-link" title="Continuing to meet the e-resource challenge" href="https://www.oclc.org/en/worldshare-management-services/e-resources-challenge.html">Download a white paper on e-resource challenges</a></p> </div> </div> </div> <div class="parsys_column cq-colctrl-lt0-c1"> <div class="col1 parsys"><div class="highlightbox section">  <div class="hbox select" style="background: #ffffff; border: 1px #000 solid; border-radius: 0px;"> <div class="highlightbox parsys"><div class="text parbase section"> <h4>Sharing holdings to improve discovery</h4> </div> <div class="videotranslation parbase section"> <div class="par video-container "> <iframe aria-label="Sharing holdings to improve discovery" src="https://www.youtube-nocookie.com/embed/66coqw-Cq-M?enablejsapi=1&rel=0&modestbranding=1" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> </div></div> </div> </div>  </div> <div class="text parbase section"> <div class="barquote ltgreen"> <div class="barquote-header"> <div class="barquote-image"> <img src="/content/dam/oclc/worldcat/update/photo_maurine_mccourry.jpg" alt="Maurine McCourry [photo]" width="48" height="48"/> </div> <h3>“Drastically improved discovery…”</h3> </div> <p class="barquote-text">“We have title-level OCLC cataloging for most of our subscribed databases, which is amazing. ...It has drastically improved discovery.”</p> <p class="barquote-attr"><strong>Maurine McCourry</strong><br /> Technical Services Librarian<br /> Hillsdale College<br /> Hillsdale, Michigan, United States</p> <p class="barquote-morelink"><a href="https://www.oclc.org/en/member-stories/hillsdale.html">Read Hillsdale’s story</a></p> </div> </div> </div> </div> </div></div> <div class="text parbase section"> <p style="margin: 0;"><a name="registry"></a> </p> </div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt6" id="headline-registry"> <div class="parsys_column cq-colctrl-lt6-c0"> <div class="col0 parsys"><div class="image parbase section"> <figure class="figure-stack-image"> <img src="/content/marketing/publish/en_us/worldcat/inside-worldcat/_jcr_content/par/parsyscolumncontrol__7/col0/image_5d0f.img.png/1725649632364.png" alt="icon for the WorldCat registry" title=" " class="cq-dd-image section-icon registry"> <figcaption> <div class="img-caption"></div> <div class="img-attribution"></div> </figcaption> </figure></div> </div> </div> <div class="parsys_column cq-colctrl-lt6-c1"> <div class="col1 parsys"><div class="text parbase section"> <h2 class="section orange ptop"><a class="offset-anchor" name="registry-content-cont"></a>A registry of library profiles to increase visibility</h2> </div> </div> </div> </div></div> <div class="text parbase section"> <p><strong>The WorldCat registry allows libraries to maintain information about their services and contacts to help information seekers find the library online.</strong> When librarians maintain their institution’s location, hours, relationships, services and contact information, the WorldCat registry populates that information on <a href="http://www.worldcat.org/">WorldCat.org</a> and elsewhere through links on popular websites. Library staff can also share profiles with vendors and consortium members to ensure they always have the most accurate contact information.</p> <p><a href="http://www.worldcat.org/registry/institution" class="cta-box-link">Visit the WorldCat registry</a></p> </div> <div class="text parbase section"> <h3>Find in a Library links</h3> <p>Services across the internet help people find great books to read. The WorldCat data embedded into those websites through “Find in a Library” links help direct readers to libraries near them that hold the book they want. The WorldCat registry provides the location and other information needed to connect libraries with readers.</p> </div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt0"> <div class="parsys_column cq-colctrl-lt0-c0"> <div class="col0 parsys"><div class="image parbase section"> <figure class="figure-stack-image"> <img src="/content/marketing/publish/en_us/worldcat/inside-worldcat/_jcr_content/par/parsyscolumncontrol__8/col0/image_c30a.img.jpg/1725649632428.jpg" alt="Illustration: Google Books 'Find in a Library' link" title="Illustration: Google Books 'Find in a Library' link" class="cq-dd-image"> <figcaption> <div class="img-caption"></div> <div class="img-attribution"></div> </figcaption> </figure></div> <div class="text parbase section"> <p><a href="https://books.google.com/">Google Books</a></p> </div> </div> </div> <div class="parsys_column cq-colctrl-lt0-c1"> <div class="col1 parsys"><div class="image parbase section"> <figure class="figure-stack-image"> <img src="/content/marketing/publish/en_us/worldcat/inside-worldcat/_jcr_content/par/parsyscolumncontrol__8/col1/image_ec14.img.jpg/1725649632455.jpg" alt="Illustration: Goodreads 'Libraries' link" title="Illustration: Goodreads 'Libraries' link" class="cq-dd-image"> <figcaption> <div class="img-caption"></div> <div class="img-attribution"></div> </figcaption> </figure></div> <div class="text parbase section"> <p><a href="https://www.goodreads.com/">Goodreads</a></p> </div> </div> </div> </div></div> <div class="parsyscolumncontrol section"> <div class="parsys_column cq-colctrl-lt0"> <div class="parsys_column cq-colctrl-lt0-c0"> <div class="col0 parsys"><div class="image parbase section"> <figure class="figure-stack-image"> <img src="/content/marketing/publish/en_us/worldcat/inside-worldcat/_jcr_content/par/parsyscolumncontrol__10/col0/image_b308.img.jpg/1725649632499.jpg" alt="Illustration: NPR Books We Love 'Find at Your Library' link" title="Illustration: 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