Uniform Resource Locator from FOLDOC

<!DOCTYPE html> <html lang="en"> <head> <title>Uniform Resource Locator from FOLDOC</title> <meta http-equiv="Content-Security-Policy" content="default-src 'unsafe-inline' http: https:"> <meta name="verify-v1" content="siAI0ZOMn41hao0E/T76D1I2L3MtFjzE48P3ctCjRNU="> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="msapplication-TileColor" content="#da532c"> <meta name="theme-color" content="#ffffff"> <meta name="google-translate-customization" content="828219db36930e1e-c51d915bf2ea717c-g9b503f9a85d5b5a7-a">  <script src="https://www.googletagmanager.com/gtag/js?id=UA-9715943-1"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'UA-9715943-1'); </script>  <link href="//fonts.googleapis.com/css?family=Duru+Sans%7CBelgrano%7CInconsolata%7CAlef%7CArmata" rel="stylesheet" type="text/css"> <link rel="stylesheet" type="text/css" href="/css/layout.css?2">  <link rel="apple-touch-icon" sizes="152x152" href="/im/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/im/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/im/favicon-16x16.png"> <link rel="manifest" href="/im/site.webmanifest"> <link rel="mask-icon" href="/im/safari-pinned-tab.svg" color="#5bbad5"> <link rel="canonical" href="https://foldoc.org/Uniform+Resource+Locator"> <link rel="alternate" type="application/rss+xml" title="FOLDOC" href="/rss.xml"> <link rel="search" title="FOLDOC" type="application/opensearchdescription+xml" href="//foldoc.org/search.xml">  <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-5521724329338202" crossorigin="anonymous"></script>  </head> <body> <div id="fb-root"></div> <script> (function (d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk')); </script> <div id="container"> <div id="left"> <a href="/"> <img src="/foldoc.gif" width="300" height="98" alt="Free On-line Dictionary of Computing" class="logo"> </a> <div id="nav"> <a href="/contents.html" class="button">Contents</a> <a href="/help.html" class="button">Help</a> <a href="/random-entry" class="button">Random</a> </div> <form action="/"> <input type="text" name="query" id="query" autofocus="autofocus"> <input type="submit" name="action" value="Search" class="button"> </form> <div id="content"> <h3>URL ⇝</h3> <h2>Uniform Resource Locator</h2> <p></p> <p><<i><a href="contents/web.html">web</a></i>></p> <p> (URL, previously "Universal") A <a href="/standard">standard</a> way of specifying the location of an object, typically a <a href="/web+page">web page</a>, on the <a href="/Internet">Internet</a>. Other types of object are described below. URLs are the form of address used on the <a href="/World-Wide+Web">World-Wide Web</a>. They are used in <a href="/HTML">HTML</a> documents to specify the target of a <a href="/hypertext+link">hypertext link</a> which is often another HTML document (possibly stored on another computer). <p></p> Here are some example URLs: <p></p> <pre> http://w3.org/default.html http://acme.co.uk:8080/images/map.gif http://foldoc.org/?Uniform+Resource+Locator http://w3.org/default.html#Introduction ftp://wuarchive.wustl.edu/mirrors/msdos/graphics/gifkit.zip ftp://spy:<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="23504640514657634557530d42404e460d404c4e">[email protected]</a>/pub/topsecret/weapon.tgz mailto:<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="9dfbeff8f9ddf9f2feb3f4feb3fcfeb3e8f6">[email protected]</a> news:alt.hypertext telnet://dra.com </pre>The part before the first colon specifies the access scheme or <a href="/protocol">protocol</a>. Commonly implemented schemes include: <a href="/ftp">ftp</a>, <a href="/http">http</a> (web), <a href="/gopher">gopher</a> or <a href="/WAIS">WAIS</a>. The "file" scheme should only be used to refer to a file on the same host. Other less commonly used schemes include <a href="/news">news</a>, <a href="/telnet">telnet</a> or mailto (<a href="/e-mail">e-mail</a>). <p></p> The part after the colon is interpreted according to the access scheme. In general, two slashes after the colon introduce a <a href="/hostname">hostname</a> (host:port is also valid, or for <a href="/FTP">FTP</a> user:passwd@host or user@host). The <a href="/port">port</a> number is usually omitted and defaults to the standard port for the scheme, e.g. port 80 for HTTP. <p></p> For an HTTP or FTP URL the next part is a <a href="/pathname">pathname</a> which is usually related to the pathname of a file on the server. The file can contain any type of data but only certain types are interpreted directly by most <a href="/browsers">browsers</a>. These include <a href="/HTML">HTML</a> and images in <a href="/gif">gif</a> or <a href="/jpeg">jpeg</a> format. The file's type is given by a <a href="/MIME">MIME</a> type in the HTTP headers returned by the server, e.g. "text/html", "image/gif", and is usually also indicated by its <a href="/filename+extension">filename extension</a>. A file whose type is not recognised directly by the browser may be passed to an external "viewer" <a href="/application">application</a>, e.g. a sound player. <p></p> The last (optional) part of the URL may be a query string preceded by "?" or a "fragment identifier" preceded by "#". The later indicates a particular position within the specified document. <p></p> Only alphanumerics, reserved characters (:/?#"<>%+) used for their reserved purposes and "$", "-", "_", ".", "&", "+" are safe and may be transmitted unencoded. Other characters are encoded as a "%" followed by two <a href="/hexadecimal">hexadecimal</a> digits. Space may also be encoded as "+". Standard <a href="/SGML">SGML</a> "&<name>;" character entity encodings (e.g. "é") are also accepted when URLs are embedded in HTML. The terminating semicolon may be omitted if &<name> is followed by a non-letter character. <p></p> <em><a href="http://w3.org/hypertext/WWW/Addressing/Addressing.html">The authoritative W3C URL specification</a></em>. <p></p> <p class="updated">Last updated: <a href="/new.html">2000-02-17</a></p> <p></p> <p class="vertical-space"></p><h3>Nearby terms:</h3> <p class="neighbours"> <a href="/Uniform+Resource+Locater">Uniform Resource Locater</a> &diams; <b><a href="/Uniform+Resource+Locator">Uniform Resource Locator</a></b> &diams; <a href="/Uniform+Resource+Name">Uniform Resource Name</a> </p> <p> Try this search on <a href="https://www.wikipedia.org/wiki/Special:Search?search=Uniform+Resource+Locator">Wikipedia</a>, <a href="https://www.wiktionary.org/wiki/Uniform+Resource+Locator">Wiktionary</a>, <a href="https://www.google.com/search?q=define:Uniform+Resource+Locator">Google</a>, <a href="https://www.onelook.com/?w=Uniform+Resource+Locator">OneLook</a>. </p> <p class="vertical-space"></p> <hr> <div></div> <hr>  <div id="HCB_comment_box">Loading</div> <link rel="stylesheet" type="text/css" href="//www.htmlcommentbox.com/static/skins/bootstrap/twitter-bootstrap.css?v=0"> <script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script><script language="javascript" id="hcb"> hcb_user = { PAGE: 'https://foldoc.org/Uniform+Resource+Locator', comments_header: ' ', no_comments_msg: ' ', err_comment_empty: 'Your comment was not posted because it was empty!', rss: '', }; var s = document.createElement("script"); s.setAttribute("type", "text/javascript"); s.setAttribute("src", "//www.htmlcommentbox.com/jread?page=" + escape(hcb_user.PAGE).replace(/\+/g, "%2B") + "&mod=%241%24wq1rdBcg%24.0y2uzvjA2bsnhzpXVq9F." + "&opts=17374&num=10"); // No e-mail field: 16846 if (typeof s != "undefined") document.getElementsByTagName("head")[0].appendChild(s); </script> <script> setTimeout(function () { document.getElementById('hcb_form_content').rows = 1 }, 1000); </script> <hr>  </div>  </div>  <div id="right"> <div id="google_translate_element"> <script> function googleTranslateElementInit() { new google.translate.TranslateElement({ pageLanguage: 'en' }, 'google_translate_element'); } </script> <script src="https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script> </div> <p><br></p> <hr> <div id="social"> <div class="fb-like" data-href="http://foldoc.org/" data-layout="button_count" data-action="like" data-show-faces="false" data-share="true"> </div> <a href="https://twitter.com/share" class="twitter-share-button" data-via="foldoc"> Tweet </a> <script> if (!document.getElementById('twitter-wjs')) { var fjs = document.getElementsByTagName('script')[0], js = document.createElement('script'); js.id = 'twitter-wjs'; js.src = 'https://platform.twitter.com/widgets.js'; fjs.parentNode.insertBefore(js, fjs); } </script> </div> <hr> <div> <p></p> </div> <p> <a href="/rss.xml"> <img src="/orangerss.gif" width="14" height="14" alt="RSS feed of new items"> </a>   <a href="/new.html">Recent Updates</a>     |     <a href="/missing.html">Missing Terms</a> </p> <p>Updated: Sun, 06 Oct 2024 20:18:24 GMT</p> <p>15274 entries</p> <p><em><a href="/Free+On-line+Dictionary">Copyright Denis Howe 1985</a></em></p> </div>  </div>   <script type="text/javascript"> window._qevents = window._qevents || []; (function() { var elem = document.createElement('script'); elem.src = 'https://secure.quantserve.com/quant.js'; elem.async = true; elem.type = 'text/javascript'; var scpt = document.getElementsByTagName('script')[0]; scpt.parentNode.insertBefore(elem, scpt); })(); window._qevents.push({ qacct: 'p-48Rosdvs3EiOc', uid: '__INSERT_EMAIL_HERE__' }); </script> <noscript> <div style="display:none;"> <img src="https//pixel.quantserve.com/pixel/p-48Rosdvs3EiOc.gif" border="0" height="1" width="1" alt="Quantcast"/> </div> </noscript>  </body> </html>

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Uniform Resource Locator from FOLDOC