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"></span></span></span></button><div class="hidden"><ul class="submenu language-menu " aria-labelledby="language-menu-button"><li class=" "><form class="submenu-item locale-redirect-setting"><div class="group"><label class="switch"><input type="checkbox" name="locale-redirect"/><span class="slider"></span><span class="label">Remember language</span></label><a href="https://github.com/orgs/mdn/discussions/739" rel="external noopener noreferrer" target="_blank" title="Enable this setting to automatically switch to this language when it's available. (Click to learn more.)"><span class="icon icon-question-mark "></span></a></div></form></li><li class=" "><a data-locale="en-US" href="/en-US/docs/Web/HTTP/Headers/Viewport-Width" class="button submenu-item"><span>English (US)</span></a></li></ul></div></div></li></ul></div></div></div></div><div class="container"><div class="notecard experimental localized-content-note"><p><a href="https://github.com/orgs/mdn/discussions/741" class="external"><strong>Experiment</strong>: Dieser Inhalt wurde automatisch aus dem Englischen übersetzt, und kann Fehler enthalten.</a></p></div></div><div class="main-wrapper"><div class="sidebar-container"><aside id="sidebar-quicklinks" class="sidebar" data-macro="HTTPSidebar"><button type="button" class="button action backdrop" aria-label="Collapse sidebar"><span class="button-wrap"></span></button><nav aria-label="Related Topics" class="sidebar-inner"><header class="sidebar-actions"><section class="sidebar-filter-container"><div class="sidebar-filter "><label id="sidebar-filter-label" class="sidebar-filter-label" for="sidebar-filter-input"><span class="icon icon-filter"></span><span class="visually-hidden">Filter sidebar</span></label><input id="sidebar-filter-input" autoComplete="off" class="sidebar-filter-input-field false" type="text" placeholder="Filter" value=""/><button type="button" class="button action has-icon clear-sidebar-filter-button"><span class="button-wrap"><span class="icon icon-cancel "></span><span class="visually-hidden">Clear filter input</span></span></button></div></section></header><div class="sidebar-inner-nav"><div class="in-nav-toc"><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In diesem Artikel</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#syntax">Syntax</a></li><li class="document-toc-item "><a class="document-toc-link" href="#direktiven">Direktiven</a></li><li class="document-toc-item "><a class="document-toc-link" href="#beispiele">Beispiele</a></li><li class="document-toc-item "><a class="document-toc-link" href="#browser-kompatibilität">Browser-Kompatibilität</a></li><li class="document-toc-item "><a class="document-toc-link" href="#siehe_auch">Siehe auch</a></li></ul></section></div></div><div class="sidebar-body"> <ol> <li class="section"><a href="/de/docs/Web/HTTP">HTTP</a></li> <li class="section no-link">Anleitungen</li> <li><a href="/de/docs/Web/HTTP/Overview">Ein Überblick über HTTP</a></li> <li><a href="/de/docs/Web/HTTP/Session">Eine typische HTTP-Sitzung</a></li> <li><a href="/de/docs/Web/HTTP/Messages">HTTP-Nachrichten</a></li> <li><a href="/de/docs/Web/HTTP/MIME_types">MIME-Typen (IANA media types)</a></li> <li><a href="/de/docs/Web/HTTP/Compression">Compression in HTTP</a></li> <li><a href="/de/docs/Web/HTTP/Caching">HTTP-Caching</a></li> <li><a href="/de/docs/Web/HTTP/Authentication">HTTP-Authentifizierung</a></li> <li><a href="/de/docs/Web/HTTP/Cookies">Verwendung von HTTP-Cookies</a></li> <li><a href="/de/docs/Web/HTTP/Redirections">Weiterleitungen in HTTP</a></li> <li><a href="/de/docs/Web/HTTP/Conditional_requests">HTTP Conditional Requests</a></li> <li><a href="/de/docs/Web/HTTP/Range_requests">HTTP Range-Anfragen</a></li> <li><a href="/de/docs/Web/HTTP/Content_negotiation">Content-Negotiation</a></li> <li><a href="/de/docs/Web/HTTP/Connection_management_in_HTTP_1.x">Verbindungsmanagement in HTTP/1.x</a></li> <li><a href="/de/docs/Web/HTTP/Evolution_of_HTTP">Evolution des HTTP</a></li> <li><a href="/de/docs/Web/HTTP/Protocol_upgrade_mechanism">Protocol upgrade mechanism</a></li> <li><a href="/de/docs/Web/HTTP/Proxy_servers_and_tunneling">Proxy-Server und Tunneling</a></li> <li><a href="/de/docs/Web/HTTP/Client_hints">HTTP Client-Hinweise</a></li> <li class="toggle"> <details> <summary>HTTP-Sicherheit</summary> <ol> <li><a href="/de/docs/Web/Security/Practical_implementation_guides">Praktische Sicherheitsimplementierungsleitfäden</a></li> <li><a href="/en-US/observatory">HTTP Observatory</a></li> <li><a href="/de/docs/Web/HTTP/Permissions_Policy">Berechtigungsrichtlinie</a></li> <li><a href="/de/docs/Web/HTTP/CSP">Content Security Policy (CSP)</a></li> <li><a href="/de/docs/Web/HTTP/CORS">Cross-Origin Resource Sharing (CORS)</a></li> <li><a href="/de/docs/Web/HTTP/Cross-Origin_Resource_Policy">Cross-Origin Resource Policy (CORP)</a></li> <li><a href="/de/docs/Web/HTTP/Headers/Strict-Transport-Security">Strict-Transport-Security</a></li> </ol> </details> </li> <li class="section no-link">Referenzen</li> <li class="toggle"> <details open=""> <summary>HTTP-Header</summary> <ol><li><a href="/de/docs/Web/HTTP/Headers/Accept"><code>Accept</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Accept-CH"><code>Accept-CH</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Accept-Encoding"><code>Accept-Encoding</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Accept-Language"><code>Accept-Language</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Accept-Patch"><code>Accept-Patch</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Accept-Post"><code>Accept-Post</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Accept-Ranges"><code>Accept-Ranges</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Allow-Credentials"><code>Access-Control-Allow-Credentials</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Allow-Headers"><code>Access-Control-Allow-Headers</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Allow-Methods"><code>Access-Control-Allow-Methods</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Allow-Origin"><code>Access-Control-Allow-Origin</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Expose-Headers"><code>Access-Control-Expose-Headers</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Max-Age"><code>Access-Control-Max-Age</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Request-Headers"><code>Access-Control-Request-Headers</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Access-Control-Request-Method"><code>Access-Control-Request-Method</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Age"><code>Age</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Allow"><code>Allow</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Alt-Svc"><code>Alt-Svc</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Alt-Used"><code>Alt-Used</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Attribution-Reporting-Eligible"><code>Attribution-Reporting-Eligible</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Attribution-Reporting-Register-Source"><code>Attribution-Reporting-Register-Source</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Attribution-Reporting-Register-Trigger"><code>Attribution-Reporting-Register-Trigger</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Authorization"><code>Authorization</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Cache-Control"><code>Cache-Control</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Clear-Site-Data"><code>Clear-Site-Data</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Connection"><code>Connection</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Digest"><code>Content-Digest</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Disposition"><code>Content-Disposition</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-DPR"><code>Content-DPR</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Encoding"><code>Content-Encoding</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Language"><code>Content-Language</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Length"><code>Content-Length</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Location"><code>Content-Location</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Range"><code>Content-Range</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy"><code>Content-Security-Policy</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only"><code>Content-Security-Policy-Report-Only</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Type"><code>Content-Type</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Cookie"><code>Cookie</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Critical-CH"><code>Critical-CH</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Cross-Origin-Embedder-Policy"><code>Cross-Origin-Embedder-Policy</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Cross-Origin-Opener-Policy"><code>Cross-Origin-Opener-Policy</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Cross-Origin-Resource-Policy"><code>Cross-Origin-Resource-Policy</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Date"><code>Date</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Device-Memory"><code>Device-Memory</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/DNT"><code>DNT</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Downlink"><code>Downlink</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/DPR"><code>DPR</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Early-Data"><code>Early-Data</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/ECT"><code>ECT</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/ETag"><code>ETag</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Expect"><code>Expect</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Expect-CT"><code>Expect-CT</code></a><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Expires"><code>Expires</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Forwarded"><code>Forwarded</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/From"><code>From</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Host"><code>Host</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/If-Match"><code>If-Match</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/If-Modified-Since"><code>If-Modified-Since</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/If-None-Match"><code>If-None-Match</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/If-Range"><code>If-Range</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/If-Unmodified-Since"><code>If-Unmodified-Since</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Keep-Alive"><code>Keep-Alive</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Last-Modified"><code>Last-Modified</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Link"><code>Link</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Location"><code>Location</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Max-Forwards"><code>Max-Forwards</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/NEL"><code>NEL</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/No-Vary-Search"><code>No-Vary-Search</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Observe-Browsing-Topics"><code>Observe-Browsing-Topics</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Origin"><code>Origin</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Origin-Agent-Cluster"><code>Origin-Agent-Cluster</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy"><code>Permissions-Policy</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Pragma"><code>Pragma</code></a><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Priority"><code>Priority</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Proxy-Authenticate"><code>Proxy-Authenticate</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Proxy-Authorization"><code>Proxy-Authorization</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Range"><code>Range</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Referer"><code>Referer</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Referrer-Policy"><code>Referrer-Policy</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Refresh"><code>Refresh</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Report-To"><code>Report-To</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Reporting-Endpoints"><code>Reporting-Endpoints</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Repr-Digest"><code>Repr-Digest</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Retry-After"><code>Retry-After</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/RTT"><code>RTT</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Save-Data"><code>Save-Data</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-Browsing-Topics"><code>Sec-Browsing-Topics</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme"><code>Sec-CH-Prefers-Color-Scheme</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion"><code>Sec-CH-Prefers-Reduced-Motion</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Transparency"><code>Sec-CH-Prefers-Reduced-Transparency</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA"><code>Sec-CH-UA</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Arch"><code>Sec-CH-UA-Arch</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Bitness"><code>Sec-CH-UA-Bitness</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Full-Version"><code>Sec-CH-UA-Full-Version</code></a><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Full-Version-List"><code>Sec-CH-UA-Full-Version-List</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Mobile"><code>Sec-CH-UA-Mobile</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Model"><code>Sec-CH-UA-Model</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Platform"><code>Sec-CH-UA-Platform</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-CH-UA-Platform-Version"><code>Sec-CH-UA-Platform-Version</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-Fetch-Dest"><code>Sec-Fetch-Dest</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-Fetch-Mode"><code>Sec-Fetch-Mode</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-Fetch-Site"><code>Sec-Fetch-Site</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-Fetch-User"><code>Sec-Fetch-User</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-GPC"><code>Sec-GPC</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-Purpose"><code>Sec-Purpose</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-WebSocket-Accept"><code>Sec-WebSocket-Accept</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-WebSocket-Extensions"><code>Sec-WebSocket-Extensions</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-WebSocket-Key"><code>Sec-WebSocket-Key</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-WebSocket-Protocol"><code>Sec-WebSocket-Protocol</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Sec-WebSocket-Version"><code>Sec-WebSocket-Version</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Server"><code>Server</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Server-Timing"><code>Server-Timing</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Service-Worker-Navigation-Preload"><code>Service-Worker-Navigation-Preload</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Set-Cookie"><code>Set-Cookie</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Set-Login"><code>Set-Login</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/SourceMap"><code>SourceMap</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Speculation-Rules"><code>Speculation-Rules</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Strict-Transport-Security"><code>Strict-Transport-Security</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Supports-Loading-Mode"><code>Supports-Loading-Mode</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/TE"><code>TE</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Timing-Allow-Origin"><code>Timing-Allow-Origin</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Tk"><code>Tk</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Trailer"><code>Trailer</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Transfer-Encoding"><code>Transfer-Encoding</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Upgrade"><code>Upgrade</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Upgrade-Insecure-Requests"><code>Upgrade-Insecure-Requests</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/User-Agent"><code>User-Agent</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Vary"><code>Vary</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Via"><code>Via</code></a></li><li><em><a href="/de/docs/Web/HTTP/Headers/Viewport-Width" aria-current="page"><code>Viewport-Width</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></em></li><li><a href="/de/docs/Web/HTTP/Headers/Want-Content-Digest"><code>Want-Content-Digest</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Want-Repr-Digest"><code>Want-Repr-Digest</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Warning"><code>Warning</code></a><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Width"><code>Width</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/WWW-Authenticate"><code>WWW-Authenticate</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/X-Content-Type-Options"><code>X-Content-Type-Options</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control"><code>X-DNS-Prefetch-Control</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/X-Forwarded-For"><code>X-Forwarded-For</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/X-Forwarded-Host"><code>X-Forwarded-Host</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/X-Forwarded-Proto"><code>X-Forwarded-Proto</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/X-Frame-Options"><code>X-Frame-Options</code></a><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/X-XSS-Protection"><code>X-XSS-Protection</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li></ol> </details> </li> <li class="toggle"> <details> <summary>HTTP-Anfragemethoden</summary> <ol><li><a href="/de/docs/Web/HTTP/Methods/CONNECT"><code>CONNECT</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/DELETE"><code>DELETE</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/GET"><code>GET</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/HEAD"><code>HEAD</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/OPTIONS"><code>OPTIONS</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/PATCH"><code>PATCH</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/POST"><code>POST</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/PUT"><code>PUT</code></a></li><li><a href="/de/docs/Web/HTTP/Methods/TRACE"><code>TRACE</code></a></li></ol> </details> </li> <li class="toggle"> <details> <summary>HTTP-Antwortstatuscodes</summary> <ol><li><a href="/de/docs/Web/HTTP/Status/100"><code>100 Continue</code></a></li><li><a href="/de/docs/Web/HTTP/Status/101"><code>101 Switching Protocols</code></a></li><li><a href="/de/docs/Web/HTTP/Status/102"><code>102 Processing</code></a></li><li><a href="/de/docs/Web/HTTP/Status/103"><code>103 Early Hints</code></a></li><li><a href="/de/docs/Web/HTTP/Status/200"><code>200 OK</code></a></li><li><a href="/de/docs/Web/HTTP/Status/201"><code>201 Created</code></a></li><li><a href="/de/docs/Web/HTTP/Status/202"><code>202 Accepted</code></a></li><li><a href="/de/docs/Web/HTTP/Status/203"><code>203 Non-Authoritative Information</code></a></li><li><a href="/de/docs/Web/HTTP/Status/204"><code>204 No Content</code></a></li><li><a href="/de/docs/Web/HTTP/Status/205"><code>205 Reset Content</code></a></li><li><a href="/de/docs/Web/HTTP/Status/206"><code>206 Partial Content</code></a></li><li><a href="/de/docs/Web/HTTP/Status/207"><code>207 Multi-Status</code></a></li><li><a href="/de/docs/Web/HTTP/Status/208"><code>208 Already Reported</code></a></li><li><a href="/de/docs/Web/HTTP/Status/226"><code>226 IM Used</code></a></li><li><a href="/de/docs/Web/HTTP/Status/300"><code>300 Multiple Choices</code></a></li><li><a href="/de/docs/Web/HTTP/Status/301"><code>301 Moved Permanently</code></a></li><li><a href="/de/docs/Web/HTTP/Status/302"><code>302 Found</code></a></li><li><a href="/de/docs/Web/HTTP/Status/303"><code>303 See Other</code></a></li><li><a href="/de/docs/Web/HTTP/Status/304"><code>304 Not Modified</code></a></li><li><a href="/de/docs/Web/HTTP/Status/307"><code>307 Temporary Redirect</code></a></li><li><a href="/de/docs/Web/HTTP/Status/308"><code>308 Permanent Redirect</code></a></li><li><a href="/de/docs/Web/HTTP/Status/400"><code>400 Bad Request</code></a></li><li><a href="/de/docs/Web/HTTP/Status/401"><code>401 Unauthorized</code></a></li><li><a href="/de/docs/Web/HTTP/Status/402"><code>402 Payment Required</code></a></li><li><a href="/de/docs/Web/HTTP/Status/403"><code>403 Forbidden</code></a></li><li><a href="/de/docs/Web/HTTP/Status/404"><code>404 Not Found</code></a></li><li><a href="/de/docs/Web/HTTP/Status/405"><code>405 Method Not Allowed</code></a></li><li><a href="/de/docs/Web/HTTP/Status/406"><code>406 Not Acceptable</code></a></li><li><a href="/de/docs/Web/HTTP/Status/407"><code>407 Proxy Authentication Required</code></a></li><li><a href="/de/docs/Web/HTTP/Status/408"><code>408 Request Timeout</code></a></li><li><a href="/de/docs/Web/HTTP/Status/409"><code>409 Conflict</code></a></li><li><a href="/de/docs/Web/HTTP/Status/410"><code>410 Gone</code></a></li><li><a href="/de/docs/Web/HTTP/Status/411"><code>411 Length Required</code></a></li><li><a href="/de/docs/Web/HTTP/Status/412"><code>412 Precondition Failed</code></a></li><li><a href="/de/docs/Web/HTTP/Status/413"><code>413 Content Too Large</code></a></li><li><a href="/de/docs/Web/HTTP/Status/414"><code>414 URI Too Long</code></a></li><li><a href="/de/docs/Web/HTTP/Status/415"><code>415 Unsupported Media Type</code></a></li><li><a href="/de/docs/Web/HTTP/Status/416"><code>416 Range Not Satisfiable</code></a></li><li><a href="/de/docs/Web/HTTP/Status/417"><code>417 Expectation Failed</code></a></li><li><a href="/de/docs/Web/HTTP/Status/418"><code>418 I'm a teapot</code></a></li><li><a href="/de/docs/Web/HTTP/Status/421"><code>421 Misdirected Request</code></a></li><li><a href="/de/docs/Web/HTTP/Status/422"><code>422 Unprocessable Content</code></a></li><li><a href="/de/docs/Web/HTTP/Status/423"><code>423 Locked</code></a></li><li><a href="/de/docs/Web/HTTP/Status/424"><code>424 Failed Dependency</code></a></li><li><a href="/de/docs/Web/HTTP/Status/425"><code>425 Too Early</code></a></li><li><a href="/de/docs/Web/HTTP/Status/426"><code>426 Upgrade Required</code></a></li><li><a href="/de/docs/Web/HTTP/Status/428"><code>428 Precondition Required</code></a></li><li><a href="/de/docs/Web/HTTP/Status/429"><code>429 Too Many Requests</code></a></li><li><a href="/de/docs/Web/HTTP/Status/431"><code>431 Request Header Fields Too Large</code></a></li><li><a href="/de/docs/Web/HTTP/Status/451"><code>451 Unavailable For Legal Reasons</code></a></li><li><a href="/de/docs/Web/HTTP/Status/500"><code>500 Internal Server Error</code></a></li><li><a href="/de/docs/Web/HTTP/Status/501"><code>501 Not Implemented</code></a></li><li><a href="/de/docs/Web/HTTP/Status/502"><code>502 Bad Gateway</code></a></li><li><a href="/de/docs/Web/HTTP/Status/503"><code>503 Service Unavailable</code></a></li><li><a href="/de/docs/Web/HTTP/Status/504"><code>504 Gateway Timeout</code></a></li><li><a href="/de/docs/Web/HTTP/Status/505"><code>505 HTTP Version Not Supported</code></a></li><li><a href="/de/docs/Web/HTTP/Status/506"><code>506 Variant Also Negotiates</code></a></li><li><a href="/de/docs/Web/HTTP/Status/507"><code>507 Insufficient Storage</code></a></li><li><a href="/de/docs/Web/HTTP/Status/508"><code>508 Loop Detected</code></a></li><li><a href="/de/docs/Web/HTTP/Status/510"><code>510 Not Extended</code></a></li><li><a href="/de/docs/Web/HTTP/Status/511"><code>511 Network Authentication Required</code></a></li></ol> </details> </li> <li class="toggle"> <details> <summary>CSP-Direktiven</summary> <ol><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/base-uri"><code>CSP: base-uri</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/block-all-mixed-content"><code>CSP: block-all-mixed-content</code></a><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/child-src"><code>CSP: child-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/connect-src"><code>CSP: connect-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/default-src"><code>CSP: default-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/fenced-frame-src"><code>CSP: fenced-frame-src</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/font-src"><code>CSP: font-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/form-action"><code>CSP: form-action</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors"><code>CSP: frame-ancestors</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/frame-src"><code>CSP: frame-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/img-src"><code>CSP: img-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/manifest-src"><code>CSP: manifest-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/media-src"><code>CSP: media-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/object-src"><code>CSP: object-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/prefetch-src"><code>CSP: prefetch-src</code></a><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/report-to"><code>CSP: report-to</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/report-uri"><code>CSP: report-uri</code></a><abbr class="icon icon-deprecated" title="Veraltet. Nicht für neue Websites verwenden."> <span class="visually-hidden">Veraltet</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/require-trusted-types-for"><code>CSP: require-trusted-types-for</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/sandbox"><code>CSP: sandbox</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/script-src"><code>CSP: script-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr"><code>CSP: script-src-attr</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem"><code>CSP: script-src-elem</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/style-src"><code>CSP: style-src</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr"><code>CSP: style-src-attr</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem"><code>CSP: style-src-elem</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/trusted-types"><code>CSP: trusted-types</code></a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/upgrade-insecure-requests"><code>CSP: upgrade-insecure-requests</code></a></li><li><a href="/de/docs/Web/HTTP/Headers/Content-Security-Policy/worker-src"><code>CSP: worker-src</code></a></li></ol> </details> </li> <li class="toggle"> <details> <summary>CORS-Fehler</summary> <ol><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSDisabled">Reason: CORS disabled</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSAllowOriginNotMatchingOrigin">Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz'</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSMissingAllowOrigin">Reason: CORS header 'Access-Control-Allow-Origin' missing</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSOriginHeaderNotAdded">Reason: CORS header 'Origin' cannot be added</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSPreflightDidNotSucceed">Reason: CORS preflight channel did not succeed</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSDidNotSucceed">Reason: CORS request did not succeed</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSExternalRedirectNotAllowed">Reason: CORS request external redirect not allowed</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSRequestNotHttp">Reason: CORS request not HTTP</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSNotSupportingCredentials">Reason: Credential is not supported if the CORS header 'Access-Control-Allow-Origin' is '*'</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSMethodNotFound">Reason: Did not find method in CORS header 'Access-Control-Allow-Methods'</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSMIssingAllowCredentials">Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials'</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSInvalidAllowHeader">Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers'</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSInvalidAllowMethod">Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods'</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSMissingAllowHeaderFromPreflight">Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channel</a></li><li><a href="/de/docs/Web/HTTP/CORS/Errors/CORSMultipleAllowOriginNotAllowed">Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed</a></li></ol> </details> </li> <li class="toggle"> <details> <summary>Permissions-Policy Direktiven</summary> <ol><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/accelerometer">Permissions-Policy: accelerometer</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/ambient-light-sensor">Permissions-Policy: ambient-light-sensor</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/attribution-reporting">Permissions-Policy: attribution-reporting</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/autoplay">Permissions-Policy: autoplay</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/bluetooth">Permissions-Policy: bluetooth</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/browsing-topics">Permissions-Policy: browsing-topics</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr><abbr class="icon icon-nonstandard" title="Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden."> <span class="visually-hidden">Nicht standardisiert</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/camera">Permissions-Policy: camera</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/compute-pressure">Permissions-Policy: compute-pressure</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/display-capture">Permissions-Policy: display-capture</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/document-domain">Permissions-Policy: document-domain</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/encrypted-media">Permissions-Policy: encrypted-media</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/fullscreen">Permissions-Policy: fullscreen</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/gamepad">Permissions-Policy: gamepad</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/geolocation">Permissions-Policy: geolocation</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/gyroscope">Permissions-Policy: gyroscope</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/hid">Permissions-Policy: hid</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/identity-credentials-get">Permissions-Policy: identity-credentials-get</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/idle-detection">Permissions-Policy: idle-detection</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/local-fonts">Permissions-Policy: local-fonts</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/magnetometer">Permissions-Policy: magnetometer</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/microphone">Permissions-Policy: microphone</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/midi">Permissions-Policy: midi</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/otp-credentials">Permissions-Policy: otp-credentials</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/payment">Permissions-Policy: payment</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/picture-in-picture">Permissions-Policy: picture-in-picture</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/publickey-credentials-create">Permissions-Policy: publickey-credentials-create</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/publickey-credentials-get">Permissions-Policy: publickey-credentials-get</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/screen-wake-lock">Permissions-Policy: screen-wake-lock</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/serial">Permissions-Policy: serial</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/speaker-selection">Permissions-Policy: speaker-selection</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/storage-access">Permissions-Policy: storage-access</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/usb">Permissions-Policy: usb</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/web-share">Permissions-Policy: web-share</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/window-management">Permissions-Policy: window-management</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/HTTP/Headers/Permissions-Policy/xr-spatial-tracking">Permissions-Policy: xr-spatial-tracking</a><abbr class="icon icon-experimental" title="Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert."> <span class="visually-hidden">Experimentell</span> </abbr></li></ol> </details> </li> <li><a href="/de/docs/Web/HTTP/Resources_and_specifications">HTTP-Ressourcen und Spezifikationen</a></li> </ol> </div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In diesem Artikel</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#syntax">Syntax</a></li><li class="document-toc-item "><a class="document-toc-link" href="#direktiven">Direktiven</a></li><li class="document-toc-item "><a class="document-toc-link" href="#beispiele">Beispiele</a></li><li class="document-toc-item "><a class="document-toc-link" href="#browser-kompatibilität">Browser-Kompatibilität</a></li><li class="document-toc-item "><a class="document-toc-link" href="#siehe_auch">Siehe auch</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="de"><header><h1>Viewport-Width</h1></header><div class="section-content"><div class="notecard deprecated"><p><strong>Veraltet:</strong> Diese Funktion wird nicht mehr empfohlen. Obwohl einige Browser sie möglicherweise noch unterstützen, kann sie bereits aus den relevanten Webstandards entfernt worden sein, befindet sich im Prozess der Entfernung oder wird nur aus Kompatibilitätsgründen beibehalten. Vermeiden Sie die Verwendung und aktualisieren Sie gegebenenfalls bestehenden Code; siehe die <a href="#browser-kompatibilität">Kompatibilitätstabelle</a> am Ende dieser Seite, um Ihre Entscheidung zu treffen. Beachten Sie, dass diese Funktion jederzeit nicht mehr funktionieren kann.</p></div><div class="notecard secure"><p><strong>Sicherer Kontext:</strong> Diese Funktion ist nur in <a href="/de/docs/Web/Security/Secure_Contexts">sicheren Kontexten</a> (HTTPS) in einigen oder allen <a href="#browser-kompatibilität">unterstützenden Browsern</a> verfügbar.</p></div><div class="notecard nonstandard"><p><strong>Kein Standard:</strong> Diese Funktion ist nicht standardisiert und befindet sich nicht im Standardisierungsprozess. Verwenden Sie sie nicht auf Produktionsseiten, die auf das Web ausgerichtet sind: Sie wird nicht für alle Benutzer funktionieren. Außerdem kann es große Inkompatibilitäten zwischen Implementierungen geben und das Verhalten kann sich in Zukunft ändern.</p></div> <p>Der <strong><code>Viewport-Width</code></strong> <a href="/de/docs/Web/HTTP/Client_hints">device client hint</a> Request-Header bietet die Layout-Viewport-Breite des Clients in <a href="/de/docs/Glossary/CSS_pixel">CSS-Pixel</a>. Der Wert wird auf die nächsthöhere ganze Zahl (d.h. aufgerundet) gerundet.</p> <figure class="table-container"><table class="properties"> <tbody> <tr> <th scope="row">Header-Typ</th> <td> <a href="/de/docs/Glossary/Request_header">Anforderungs-Header</a>, <a href="/de/docs/Web/HTTP/Client_hints">Client-Hinweis</a> </td> </tr> <tr> <th scope="row"><a href="/de/docs/Glossary/Forbidden_header_name">Verbotener Headername</a></th> <td>nein</td> </tr> </tbody> </table></figure> <p>Der Hinweis kann zusammen mit anderen bildschirmspezifischen Hinweisen verwendet werden, um Bilder zu liefern, die für eine bestimmte Bildschirmgröße optimiert sind, oder um Ressourcen auszulassen, die für eine bestimmte Bildschirmbreite nicht benötigt werden.</p> <p>Wenn der <code>Viewport-Width</code>-Header mehrmals in einer Nachricht erscheint, wird das letzte Vorkommen verwendet.</p> <div class="notecard note"> <p><strong>Hinweis:</strong></p> <ul> <li>Client-Hinweise sind nur auf sicheren Ursprüngen (über TLS) zugänglich.</li> <li>Ein Server muss sich entscheiden, den <code>Viewport-Width</code>-Header vom Client zu erhalten, indem er den <a href="/de/docs/Web/HTTP/Headers/Accept-CH"><code>Accept-CH</code></a>-Antwort-Header sendet.</li> <li>Server, die sich für den <code>Viewport-Width</code>-Client-Hinweis entscheiden, geben ihn normalerweise auch im <a href="/de/docs/Web/HTTP/Headers/Vary"><code>Vary</code></a>-Header an. Dies informiert Caches, dass der Server möglicherweise unterschiedliche Antworten basierend auf dem Headerwert in einer Anfrage senden kann.</li> <li><code>Viewport-Width</code> wurde aus der ursprünglichen Client-Hints-Spezifikation im <a href="https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-client-hints-07" class="external" target="_blank">draft-ietf-httpbis-client-hints-07</a> entfernt. Der vorgeschlagene Ersatz ist <a href="https://wicg.github.io/responsive-image-client-hints/#sec-ch-viewport-width" class="external" target="_blank"><code>Sec-CH-Viewport-Width</code></a> (Responsive Image Client Hints).</li> </ul> </div></div><section aria-labelledby="syntax"><h2 id="syntax"><a href="#syntax">Syntax</a></h2><div class="section-content"><div class="code-example"><div class="example-header"><span class="language-name">http</span></div><pre class="brush: http notranslate"><code>Viewport-Width: <number> </code></pre></div></div></section><section aria-labelledby="direktiven"><h2 id="direktiven"><a href="#direktiven">Direktiven</a></h2><div class="section-content"><dl> <dt id="number"><a href="#number"><number></a></dt> <dd> <p>Die Breite des Viewports des Benutzers in <a href="/de/docs/Glossary/CSS_pixel">CSS-Pixel</a>, aufgerundet auf die nächste ganze Zahl.</p> </dd> </dl></div></section><section aria-labelledby="beispiele"><h2 id="beispiele"><a href="#beispiele">Beispiele</a></h2><div class="section-content"><p>Ein Server muss zunächst entscheiden, den <code>Viewport-Width</code>-Header zu erhalten, indem er den Antwort-Header <a href="/de/docs/Web/HTTP/Headers/Accept-CH"><code>Accept-CH</code></a> sendet, der die Direktive <code>Viewport-Width</code> enthält.</p> <div class="code-example"><div class="example-header"><span class="language-name">http</span></div><pre class="brush: http notranslate"><code>Accept-CH: Viewport-Width </code></pre></div> <p>Dann kann bei nachfolgenden Anfragen der Client den <code>Viewport-Width</code>-Header zurücksenden:</p> <div class="code-example"><div class="example-header"><span class="language-name">http</span></div><pre class="brush: http notranslate"><code>Viewport-Width: 320 </code></pre></div></div></section><h2 id="browser-kompatibilität"><a href="#browser-kompatibilität">Browser-Kompatibilität</a></h2><p>BCD tables only load in the browser<noscript> with JavaScript enabled. Enable JavaScript to view data.</noscript></p><section aria-labelledby="siehe_auch"><h2 id="siehe_auch"><a href="#siehe_auch">Siehe auch</a></h2><div class="section-content"><ul> <li> <p><a href="https://developer.chrome.com/docs/privacy-security/user-agent-client-hints" class="external" target="_blank">Verbesserung des Datenschutzes und der Entwicklererfahrung mit User-Agent-Client-Hints</a> (developer.chrome.com)</p> </li> <li> <p>Device Client Hints</p> <ul> <li><a href="/de/docs/Web/HTTP/Headers/Content-DPR"><code>Content-DPR</code></a></li> <li><a href="/de/docs/Web/HTTP/Headers/Device-Memory"><code>Device-Memory</code></a></li> <li><a href="/de/docs/Web/HTTP/Headers/DPR"><code>DPR</code></a></li> <li><a href="/de/docs/Web/HTTP/Headers/Width"><code>Width</code></a></li> </ul> </li> <li><a href="/de/docs/Web/HTTP/Headers/Accept-CH"><code>Accept-CH</code></a></li> <li> <p><a href="/de/docs/Web/HTTP/Caching#vary">HTTP-Caching > Vary</a> und <a 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HTTP</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Caching\">HTTP-Caching</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Authentication\">HTTP-Authentifizierung</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Cookies\">Verwendung von HTTP-Cookies</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Redirections\">Weiterleitungen in HTTP</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Conditional_requests\">HTTP Conditional Requests</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Range_requests\">HTTP Range-Anfragen</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Content_negotiation\">Content-Negotiation</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Connection_management_in_HTTP_1.x\">Verbindungsmanagement in HTTP/1.x</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Evolution_of_HTTP\">Evolution des HTTP</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Protocol_upgrade_mechanism\">Protocol upgrade mechanism</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Proxy_servers_and_tunneling\">Proxy-Server und Tunneling</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Client_hints\">HTTP Client-Hinweise</a></li>\n <li class=\"toggle\">\n <details>\n <summary>HTTP-Sicherheit</summary>\n <ol>\n <li><a href=\"/de/docs/Web/Security/Practical_implementation_guides\">Praktische Sicherheitsimplementierungsleitfäden</a></li>\n <li><a href=\"/en-US/observatory\">HTTP Observatory</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Permissions_Policy\">Berechtigungsrichtlinie</a></li>\n <li><a href=\"/de/docs/Web/HTTP/CSP\">Content Security Policy (CSP)</a></li>\n <li><a href=\"/de/docs/Web/HTTP/CORS\">Cross-Origin Resource Sharing (CORS)</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Cross-Origin_Resource_Policy\">Cross-Origin Resource Policy (CORP)</a></li>\n <li><a href=\"/de/docs/Web/HTTP/Headers/Strict-Transport-Security\">Strict-Transport-Security</a></li>\n </ol>\n </details>\n </li>\n <li class=\"section no-link\">Referenzen</li>\n <li class=\"toggle\">\n <details open=\"\">\n <summary>HTTP-Header</summary>\n <ol><li><a href=\"/de/docs/Web/HTTP/Headers/Accept\"><code>Accept</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Accept-CH\"><code>Accept-CH</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Accept-Encoding\"><code>Accept-Encoding</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Accept-Language\"><code>Accept-Language</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Accept-Patch\"><code>Accept-Patch</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Accept-Post\"><code>Accept-Post</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Accept-Ranges\"><code>Accept-Ranges</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Allow-Credentials\"><code>Access-Control-Allow-Credentials</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Allow-Headers\"><code>Access-Control-Allow-Headers</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Allow-Methods\"><code>Access-Control-Allow-Methods</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Allow-Origin\"><code>Access-Control-Allow-Origin</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Expose-Headers\"><code>Access-Control-Expose-Headers</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Max-Age\"><code>Access-Control-Max-Age</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Request-Headers\"><code>Access-Control-Request-Headers</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Access-Control-Request-Method\"><code>Access-Control-Request-Method</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Age\"><code>Age</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Allow\"><code>Allow</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Alt-Svc\"><code>Alt-Svc</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Alt-Used\"><code>Alt-Used</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Attribution-Reporting-Eligible\"><code>Attribution-Reporting-Eligible</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Attribution-Reporting-Register-Source\"><code>Attribution-Reporting-Register-Source</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Attribution-Reporting-Register-Trigger\"><code>Attribution-Reporting-Register-Trigger</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Authorization\"><code>Authorization</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Cache-Control\"><code>Cache-Control</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Clear-Site-Data\"><code>Clear-Site-Data</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Connection\"><code>Connection</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Digest\"><code>Content-Digest</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Disposition\"><code>Content-Disposition</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-DPR\"><code>Content-DPR</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Encoding\"><code>Content-Encoding</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Language\"><code>Content-Language</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Length\"><code>Content-Length</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Location\"><code>Content-Location</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Range\"><code>Content-Range</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy\"><code>Content-Security-Policy</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only\"><code>Content-Security-Policy-Report-Only</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Type\"><code>Content-Type</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Cookie\"><code>Cookie</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Critical-CH\"><code>Critical-CH</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Cross-Origin-Embedder-Policy\"><code>Cross-Origin-Embedder-Policy</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Cross-Origin-Opener-Policy\"><code>Cross-Origin-Opener-Policy</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Cross-Origin-Resource-Policy\"><code>Cross-Origin-Resource-Policy</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Date\"><code>Date</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Device-Memory\"><code>Device-Memory</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/DNT\"><code>DNT</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Downlink\"><code>Downlink</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/DPR\"><code>DPR</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Early-Data\"><code>Early-Data</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/ECT\"><code>ECT</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/ETag\"><code>ETag</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Expect\"><code>Expect</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Expect-CT\"><code>Expect-CT</code></a><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Expires\"><code>Expires</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Forwarded\"><code>Forwarded</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/From\"><code>From</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Host\"><code>Host</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/If-Match\"><code>If-Match</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/If-Modified-Since\"><code>If-Modified-Since</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/If-None-Match\"><code>If-None-Match</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/If-Range\"><code>If-Range</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/If-Unmodified-Since\"><code>If-Unmodified-Since</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Keep-Alive\"><code>Keep-Alive</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Last-Modified\"><code>Last-Modified</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Link\"><code>Link</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Location\"><code>Location</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Max-Forwards\"><code>Max-Forwards</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/NEL\"><code>NEL</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/No-Vary-Search\"><code>No-Vary-Search</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Observe-Browsing-Topics\"><code>Observe-Browsing-Topics</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Origin\"><code>Origin</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Origin-Agent-Cluster\"><code>Origin-Agent-Cluster</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy\"><code>Permissions-Policy</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Pragma\"><code>Pragma</code></a><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Priority\"><code>Priority</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Proxy-Authenticate\"><code>Proxy-Authenticate</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Proxy-Authorization\"><code>Proxy-Authorization</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Range\"><code>Range</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Referer\"><code>Referer</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Referrer-Policy\"><code>Referrer-Policy</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Refresh\"><code>Refresh</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Report-To\"><code>Report-To</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Reporting-Endpoints\"><code>Reporting-Endpoints</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Repr-Digest\"><code>Repr-Digest</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Retry-After\"><code>Retry-After</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/RTT\"><code>RTT</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Save-Data\"><code>Save-Data</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-Browsing-Topics\"><code>Sec-Browsing-Topics</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme\"><code>Sec-CH-Prefers-Color-Scheme</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion\"><code>Sec-CH-Prefers-Reduced-Motion</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Transparency\"><code>Sec-CH-Prefers-Reduced-Transparency</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA\"><code>Sec-CH-UA</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Arch\"><code>Sec-CH-UA-Arch</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Bitness\"><code>Sec-CH-UA-Bitness</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Full-Version\"><code>Sec-CH-UA-Full-Version</code></a><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Full-Version-List\"><code>Sec-CH-UA-Full-Version-List</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Mobile\"><code>Sec-CH-UA-Mobile</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Model\"><code>Sec-CH-UA-Model</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Platform\"><code>Sec-CH-UA-Platform</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-CH-UA-Platform-Version\"><code>Sec-CH-UA-Platform-Version</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-Fetch-Dest\"><code>Sec-Fetch-Dest</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-Fetch-Mode\"><code>Sec-Fetch-Mode</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-Fetch-Site\"><code>Sec-Fetch-Site</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-Fetch-User\"><code>Sec-Fetch-User</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-GPC\"><code>Sec-GPC</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-Purpose\"><code>Sec-Purpose</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-WebSocket-Accept\"><code>Sec-WebSocket-Accept</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-WebSocket-Extensions\"><code>Sec-WebSocket-Extensions</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-WebSocket-Key\"><code>Sec-WebSocket-Key</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-WebSocket-Protocol\"><code>Sec-WebSocket-Protocol</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Sec-WebSocket-Version\"><code>Sec-WebSocket-Version</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Server\"><code>Server</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Server-Timing\"><code>Server-Timing</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Service-Worker-Navigation-Preload\"><code>Service-Worker-Navigation-Preload</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Set-Cookie\"><code>Set-Cookie</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Set-Login\"><code>Set-Login</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/SourceMap\"><code>SourceMap</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Speculation-Rules\"><code>Speculation-Rules</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Strict-Transport-Security\"><code>Strict-Transport-Security</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Supports-Loading-Mode\"><code>Supports-Loading-Mode</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/TE\"><code>TE</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Timing-Allow-Origin\"><code>Timing-Allow-Origin</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Tk\"><code>Tk</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Trailer\"><code>Trailer</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Transfer-Encoding\"><code>Transfer-Encoding</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Upgrade\"><code>Upgrade</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Upgrade-Insecure-Requests\"><code>Upgrade-Insecure-Requests</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/User-Agent\"><code>User-Agent</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Vary\"><code>Vary</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Via\"><code>Via</code></a></li><li><em><a href=\"/de/docs/Web/HTTP/Headers/Viewport-Width\" aria-current=\"page\"><code>Viewport-Width</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></em></li><li><a href=\"/de/docs/Web/HTTP/Headers/Want-Content-Digest\"><code>Want-Content-Digest</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Want-Repr-Digest\"><code>Want-Repr-Digest</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Warning\"><code>Warning</code></a><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Width\"><code>Width</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/WWW-Authenticate\"><code>WWW-Authenticate</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/X-Content-Type-Options\"><code>X-Content-Type-Options</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control\"><code>X-DNS-Prefetch-Control</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/X-Forwarded-For\"><code>X-Forwarded-For</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/X-Forwarded-Host\"><code>X-Forwarded-Host</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/X-Forwarded-Proto\"><code>X-Forwarded-Proto</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/X-Frame-Options\"><code>X-Frame-Options</code></a><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/X-XSS-Protection\"><code>X-XSS-Protection</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>HTTP-Anfragemethoden</summary>\n <ol><li><a href=\"/de/docs/Web/HTTP/Methods/CONNECT\"><code>CONNECT</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/DELETE\"><code>DELETE</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/GET\"><code>GET</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/HEAD\"><code>HEAD</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/OPTIONS\"><code>OPTIONS</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/PATCH\"><code>PATCH</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/POST\"><code>POST</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/PUT\"><code>PUT</code></a></li><li><a href=\"/de/docs/Web/HTTP/Methods/TRACE\"><code>TRACE</code></a></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>HTTP-Antwortstatuscodes</summary>\n <ol><li><a href=\"/de/docs/Web/HTTP/Status/100\"><code>100 Continue</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/101\"><code>101 Switching Protocols</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/102\"><code>102 Processing</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/103\"><code>103 Early Hints</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/200\"><code>200 OK</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/201\"><code>201 Created</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/202\"><code>202 Accepted</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/203\"><code>203 Non-Authoritative Information</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/204\"><code>204 No Content</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/205\"><code>205 Reset Content</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/206\"><code>206 Partial Content</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/207\"><code>207 Multi-Status</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/208\"><code>208 Already Reported</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/226\"><code>226 IM Used</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/300\"><code>300 Multiple Choices</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/301\"><code>301 Moved Permanently</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/302\"><code>302 Found</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/303\"><code>303 See Other</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/304\"><code>304 Not Modified</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/307\"><code>307 Temporary Redirect</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/308\"><code>308 Permanent Redirect</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/400\"><code>400 Bad Request</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/401\"><code>401 Unauthorized</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/402\"><code>402 Payment Required</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/403\"><code>403 Forbidden</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/404\"><code>404 Not Found</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/405\"><code>405 Method Not Allowed</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/406\"><code>406 Not Acceptable</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/407\"><code>407 Proxy Authentication Required</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/408\"><code>408 Request Timeout</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/409\"><code>409 Conflict</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/410\"><code>410 Gone</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/411\"><code>411 Length Required</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/412\"><code>412 Precondition Failed</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/413\"><code>413 Content Too Large</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/414\"><code>414 URI Too Long</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/415\"><code>415 Unsupported Media Type</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/416\"><code>416 Range Not Satisfiable</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/417\"><code>417 Expectation Failed</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/418\"><code>418 I'm a teapot</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/421\"><code>421 Misdirected Request</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/422\"><code>422 Unprocessable Content</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/423\"><code>423 Locked</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/424\"><code>424 Failed Dependency</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/425\"><code>425 Too Early</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/426\"><code>426 Upgrade Required</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/428\"><code>428 Precondition Required</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/429\"><code>429 Too Many Requests</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/431\"><code>431 Request Header Fields Too Large</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/451\"><code>451 Unavailable For Legal Reasons</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/500\"><code>500 Internal Server Error</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/501\"><code>501 Not Implemented</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/502\"><code>502 Bad Gateway</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/503\"><code>503 Service Unavailable</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/504\"><code>504 Gateway Timeout</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/505\"><code>505 HTTP Version Not Supported</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/506\"><code>506 Variant Also Negotiates</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/507\"><code>507 Insufficient Storage</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/508\"><code>508 Loop Detected</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/510\"><code>510 Not Extended</code></a></li><li><a href=\"/de/docs/Web/HTTP/Status/511\"><code>511 Network Authentication Required</code></a></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>CSP-Direktiven</summary>\n <ol><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/base-uri\"><code>CSP: base-uri</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/block-all-mixed-content\"><code>CSP: block-all-mixed-content</code></a><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/child-src\"><code>CSP: child-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/connect-src\"><code>CSP: connect-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/default-src\"><code>CSP: default-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/fenced-frame-src\"><code>CSP: fenced-frame-src</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/font-src\"><code>CSP: font-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/form-action\"><code>CSP: form-action</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors\"><code>CSP: frame-ancestors</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/frame-src\"><code>CSP: frame-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/img-src\"><code>CSP: img-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/manifest-src\"><code>CSP: manifest-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/media-src\"><code>CSP: media-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/object-src\"><code>CSP: object-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/prefetch-src\"><code>CSP: prefetch-src</code></a><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/report-to\"><code>CSP: report-to</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/report-uri\"><code>CSP: report-uri</code></a><abbr class=\"icon icon-deprecated\" title=\"Veraltet. Nicht für neue Websites verwenden.\">\n <span class=\"visually-hidden\">Veraltet</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/require-trusted-types-for\"><code>CSP: require-trusted-types-for</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/sandbox\"><code>CSP: sandbox</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/script-src\"><code>CSP: script-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr\"><code>CSP: script-src-attr</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem\"><code>CSP: script-src-elem</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/style-src\"><code>CSP: style-src</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr\"><code>CSP: style-src-attr</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem\"><code>CSP: style-src-elem</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/trusted-types\"><code>CSP: trusted-types</code></a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/upgrade-insecure-requests\"><code>CSP: upgrade-insecure-requests</code></a></li><li><a href=\"/de/docs/Web/HTTP/Headers/Content-Security-Policy/worker-src\"><code>CSP: worker-src</code></a></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>CORS-Fehler</summary>\n <ol><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSDisabled\">Reason: CORS disabled</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSAllowOriginNotMatchingOrigin\">Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz'</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSMissingAllowOrigin\">Reason: CORS header 'Access-Control-Allow-Origin' missing</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSOriginHeaderNotAdded\">Reason: CORS header 'Origin' cannot be added</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSPreflightDidNotSucceed\">Reason: CORS preflight channel did not succeed</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSDidNotSucceed\">Reason: CORS request did not succeed</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSExternalRedirectNotAllowed\">Reason: CORS request external redirect not allowed</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSRequestNotHttp\">Reason: CORS request not HTTP</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSNotSupportingCredentials\">Reason: Credential is not supported if the CORS header 'Access-Control-Allow-Origin' is '*'</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSMethodNotFound\">Reason: Did not find method in CORS header 'Access-Control-Allow-Methods'</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSMIssingAllowCredentials\">Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials'</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSInvalidAllowHeader\">Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers'</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSInvalidAllowMethod\">Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods'</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSMissingAllowHeaderFromPreflight\">Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channel</a></li><li><a href=\"/de/docs/Web/HTTP/CORS/Errors/CORSMultipleAllowOriginNotAllowed\">Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed</a></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>Permissions-Policy Direktiven</summary>\n <ol><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/accelerometer\">Permissions-Policy: accelerometer</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/ambient-light-sensor\">Permissions-Policy: ambient-light-sensor</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/attribution-reporting\">Permissions-Policy: attribution-reporting</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/autoplay\">Permissions-Policy: autoplay</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/bluetooth\">Permissions-Policy: bluetooth</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/browsing-topics\">Permissions-Policy: browsing-topics</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr><abbr class=\"icon icon-nonstandard\" title=\"Nicht standardisiert. Überprüfen Sie die Unterstützung in verschiedenen Browsern, bevor Sie es verwenden.\">\n <span class=\"visually-hidden\">Nicht standardisiert</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/camera\">Permissions-Policy: camera</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/compute-pressure\">Permissions-Policy: compute-pressure</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/display-capture\">Permissions-Policy: display-capture</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/document-domain\">Permissions-Policy: document-domain</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/encrypted-media\">Permissions-Policy: encrypted-media</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/fullscreen\">Permissions-Policy: fullscreen</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/gamepad\">Permissions-Policy: gamepad</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/geolocation\">Permissions-Policy: geolocation</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/gyroscope\">Permissions-Policy: gyroscope</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/hid\">Permissions-Policy: hid</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/identity-credentials-get\">Permissions-Policy: identity-credentials-get</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/idle-detection\">Permissions-Policy: idle-detection</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/local-fonts\">Permissions-Policy: local-fonts</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/magnetometer\">Permissions-Policy: magnetometer</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/microphone\">Permissions-Policy: microphone</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/midi\">Permissions-Policy: midi</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/otp-credentials\">Permissions-Policy: otp-credentials</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/payment\">Permissions-Policy: payment</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/picture-in-picture\">Permissions-Policy: picture-in-picture</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/publickey-credentials-create\">Permissions-Policy: publickey-credentials-create</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/publickey-credentials-get\">Permissions-Policy: publickey-credentials-get</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/screen-wake-lock\">Permissions-Policy: screen-wake-lock</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/serial\">Permissions-Policy: serial</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/speaker-selection\">Permissions-Policy: speaker-selection</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/storage-access\">Permissions-Policy: storage-access</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/usb\">Permissions-Policy: usb</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/web-share\">Permissions-Policy: web-share</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/window-management\">Permissions-Policy: window-management</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/HTTP/Headers/Permissions-Policy/xr-spatial-tracking\">Permissions-Policy: xr-spatial-tracking</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Erwarten Sie, dass sich das Verhalten in Zukunft ändert.\">\n <span class=\"visually-hidden\">Experimentell</span>\n</abbr></li></ol>\n </details>\n </li>\n <li><a href=\"/de/docs/Web/HTTP/Resources_and_specifications\">HTTP-Ressourcen und Spezifikationen</a></li>\n </ol>\n","sidebarMacro":"HTTPSidebar","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<div class=\"notecard deprecated\"><p><strong>Veraltet:</strong> Diese Funktion wird nicht mehr empfohlen. Obwohl einige Browser sie möglicherweise noch unterstützen, kann sie bereits aus den relevanten Webstandards entfernt worden sein, befindet sich im Prozess der Entfernung oder wird nur aus Kompatibilitätsgründen beibehalten. Vermeiden Sie die Verwendung und aktualisieren Sie gegebenenfalls bestehenden Code; siehe die <a href=\"#browser-kompatibilität\">Kompatibilitätstabelle</a> am Ende dieser Seite, um Ihre Entscheidung zu treffen. Beachten Sie, dass diese Funktion jederzeit nicht mehr funktionieren kann.</p></div><div class=\"notecard secure\"><p><strong>Sicherer Kontext:</strong> Diese Funktion ist nur in <a href=\"/de/docs/Web/Security/Secure_Contexts\">sicheren Kontexten</a> (HTTPS) in einigen oder allen <a href=\"#browser-kompatibilität\">unterstützenden Browsern</a> verfügbar.</p></div><div class=\"notecard nonstandard\"><p><strong>Kein Standard:</strong> Diese Funktion ist nicht standardisiert und befindet sich nicht im Standardisierungsprozess. Verwenden Sie sie nicht auf Produktionsseiten, die auf das Web ausgerichtet sind: Sie wird nicht für alle Benutzer funktionieren. Außerdem kann es große Inkompatibilitäten zwischen Implementierungen geben und das Verhalten kann sich in Zukunft ändern.</p></div>\n<p>Der <strong><code>Viewport-Width</code></strong> <a href=\"/de/docs/Web/HTTP/Client_hints\">device client hint</a> Request-Header bietet die Layout-Viewport-Breite des Clients in <a href=\"/de/docs/Glossary/CSS_pixel\">CSS-Pixel</a>. Der Wert wird auf die nächsthöhere ganze Zahl (d.h. aufgerundet) gerundet.</p>\n<figure class=\"table-container\"><table class=\"properties\">\n <tbody>\n <tr>\n <th scope=\"row\">Header-Typ</th>\n <td>\n <a href=\"/de/docs/Glossary/Request_header\">Anforderungs-Header</a>,\n <a href=\"/de/docs/Web/HTTP/Client_hints\">Client-Hinweis</a>\n </td>\n </tr>\n <tr>\n <th scope=\"row\"><a href=\"/de/docs/Glossary/Forbidden_header_name\">Verbotener Headername</a></th>\n <td>nein</td>\n </tr>\n </tbody>\n</table></figure>\n<p>Der Hinweis kann zusammen mit anderen bildschirmspezifischen Hinweisen verwendet werden, um Bilder zu liefern, die für eine bestimmte Bildschirmgröße optimiert sind, oder um Ressourcen auszulassen, die für eine bestimmte Bildschirmbreite nicht benötigt werden.</p>\n<p>Wenn der <code>Viewport-Width</code>-Header mehrmals in einer Nachricht erscheint, wird das letzte Vorkommen verwendet.</p>\n<div class=\"notecard note\">\n <p><strong>Hinweis:</strong></p>\n <ul>\n <li>Client-Hinweise sind nur auf sicheren Ursprüngen (über TLS) zugänglich.</li>\n <li>Ein Server muss sich entscheiden, den <code>Viewport-Width</code>-Header vom Client zu erhalten, indem er den <a href=\"/de/docs/Web/HTTP/Headers/Accept-CH\"><code>Accept-CH</code></a>-Antwort-Header sendet.</li>\n <li>Server, die sich für den <code>Viewport-Width</code>-Client-Hinweis entscheiden, geben ihn normalerweise auch im <a href=\"/de/docs/Web/HTTP/Headers/Vary\"><code>Vary</code></a>-Header an. Dies informiert Caches, dass der Server möglicherweise unterschiedliche Antworten basierend auf dem Headerwert in einer Anfrage senden kann.</li>\n <li><code>Viewport-Width</code> wurde aus der ursprünglichen Client-Hints-Spezifikation im <a href=\"https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-client-hints-07\" class=\"external\" target=\"_blank\">draft-ietf-httpbis-client-hints-07</a> entfernt. Der vorgeschlagene Ersatz ist <a href=\"https://wicg.github.io/responsive-image-client-hints/#sec-ch-viewport-width\" class=\"external\" target=\"_blank\"><code>Sec-CH-Viewport-Width</code></a> (Responsive Image Client Hints).</li>\n </ul>\n</div>"}},{"type":"prose","value":{"id":"syntax","title":"Syntax","isH3":false,"content":"<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">http</span></div><pre class=\"brush: http notranslate\"><code>Viewport-Width: <number>\n</code></pre></div>"}},{"type":"prose","value":{"id":"direktiven","title":"Direktiven","isH3":false,"content":"<dl>\n <dt id=\"number\"><a href=\"#number\"><number></a></dt>\n <dd>\n <p>Die Breite des Viewports des Benutzers in <a href=\"/de/docs/Glossary/CSS_pixel\">CSS-Pixel</a>, aufgerundet auf die nächste ganze Zahl.</p>\n </dd>\n</dl>"}},{"type":"prose","value":{"id":"beispiele","title":"Beispiele","isH3":false,"content":"<p>Ein Server muss zunächst entscheiden, den <code>Viewport-Width</code>-Header zu erhalten, indem er den Antwort-Header <a href=\"/de/docs/Web/HTTP/Headers/Accept-CH\"><code>Accept-CH</code></a> sendet, der die Direktive <code>Viewport-Width</code> enthält.</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">http</span></div><pre class=\"brush: http notranslate\"><code>Accept-CH: Viewport-Width\n</code></pre></div>\n<p>Dann kann bei nachfolgenden Anfragen der Client den <code>Viewport-Width</code>-Header zurücksenden:</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">http</span></div><pre class=\"brush: http notranslate\"><code>Viewport-Width: 320\n</code></pre></div>"}},{"type":"browser_compatibility","value":{"title":"Browser-Kompatibilität","id":"browser-kompatibilität","isH3":false,"query":"http.headers.Viewport-Width"}},{"type":"prose","value":{"id":"siehe_auch","title":"Siehe auch","isH3":false,"content":"<ul>\n <li>\n <p><a href=\"https://developer.chrome.com/docs/privacy-security/user-agent-client-hints\" class=\"external\" target=\"_blank\">Verbesserung des Datenschutzes und der Entwicklererfahrung mit User-Agent-Client-Hints</a> (developer.chrome.com)</p>\n </li>\n <li>\n <p>Device Client Hints</p>\n <ul>\n <li><a href=\"/de/docs/Web/HTTP/Headers/Content-DPR\"><code>Content-DPR</code></a></li>\n <li><a href=\"/de/docs/Web/HTTP/Headers/Device-Memory\"><code>Device-Memory</code></a></li>\n <li><a href=\"/de/docs/Web/HTTP/Headers/DPR\"><code>DPR</code></a></li>\n <li><a href=\"/de/docs/Web/HTTP/Headers/Width\"><code>Width</code></a></li>\n </ul>\n </li>\n <li><a href=\"/de/docs/Web/HTTP/Headers/Accept-CH\"><code>Accept-CH</code></a></li>\n <li>\n <p><a href=\"/de/docs/Web/HTTP/Caching#vary\">HTTP-Caching > Vary</a> und <a href=\"/de/docs/Web/HTTP/Headers/Vary\"><code>Vary</code></a></p>\n </li>\n</ul>"}}],"toc":[{"text":"Syntax","id":"syntax"},{"text":"Direktiven","id":"direktiven"},{"text":"Beispiele","id":"beispiele"},{"text":"Browser-Kompatibilität","id":"browser-kompatibilität"},{"text":"Siehe auch","id":"siehe_auch"}],"summary":"Der Viewport-Width device client hint Request-Header bietet die Layout-Viewport-Breite des Clients in CSS-Pixel. Der Wert wird auf die nächsthöhere ganze Zahl (d.h. aufgerundet) gerundet.","popularity":0,"modified":null,"other_translations":[{"locale":"en-US","title":"Viewport-Width","native":"English (US)"}],"pageType":"unknown","source":{"folder":"de/web/http/headers/viewport-width","github_url":"https://github.com/mdn/translated-content/blob/main/files/de/web/http/headers/viewport-width/index.md","last_commit_url":"https://github.com/mdn/translated-content/commit/null","filename":"index.md"},"short_title":"Viewport-Width","parents":[{"uri":"/de/docs/Web","title":"Web-Technologien für Entwickler"},{"uri":"/de/docs/Web/HTTP","title":"HTTP"},{"uri":"/de/docs/Web/HTTP/Headers","title":"Headers"},{"uri":"/de/docs/Web/HTTP/Headers/Viewport-Width","title":"Viewport-Width"}],"pageTitle":"Viewport-Width - HTTP | MDN","noIndexing":false}}</script></body></html>