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href="/de/docs/Learn_web_development/Howto/Solve_JavaScript_problems">Häufige JavaScript-Probleme lösen</a></li><li><a href="/de/docs/Learn_web_development/Howto/Web_mechanics">Webmechanik</a></li><li><a href="/de/docs/Learn_web_development/Howto/Tools_and_setup">Tools und Einrichtung</a></li><li><a href="/de/docs/Learn_web_development/Howto/Design_and_accessibility">Design und Barrierefreiheit</a></li></ol></details></li><li><a href="/de/docs/Learn_web_development/About">Über</a></li><li><a href="/de/docs/Learn_web_development/Educators">Ressourcen für Lehrkräfte</a></li><li><a href="/de/docs/Learn_web_development/Changelog">Änderungsprotokoll</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="#warum_sollte_man_multimedia_optimieren">Warum sollte man Multimedia optimieren?</a></li><li class="document-toc-item "><a class="document-toc-link" href="#optimierung_der_videobereitstellung">Optimierung der Videobereitstellung</a></li><li class="document-toc-item "><a class="document-toc-link" href="#schlussfolgerung">Schlussfolgerung</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>Multimedia: video</h1></header><div class="section-content"><ul class="prev-next"><li><a class="button secondary" href="/de/docs/Learn_web_development/Extensions/Performance/Multimedia"><span class="button-wrap"> Zurück </span></a></li><li><a class="button secondary" href="/de/docs/Learn_web_development/Extensions/Performance"><span class="button-wrap"> Übersicht: Web-Performance</span></a></li><li><a class="button secondary" href="/de/docs/Learn_web_development/Extensions/Performance/JavaScript"><span class="button-wrap"> Weiter </span></a></li></ul> <p>Wie wir im vorherigen Abschnitt gelernt haben, machen Medien, nämlich Bilder und Videos, über 70 % der heruntergeladenen Bytes einer durchschnittlichen Website aus. Wir haben bereits einen Blick auf die Optimierung von Bildern geworfen. Dieser Artikel befasst sich mit der Optimierung von Videos, um die Webleistung zu verbessern.</p> <figure class="table-container"><table> <tbody> <tr> <th scope="row">Voraussetzungen:</th> <td> <a href="/de/docs/Learn_web_development/Getting_started/Environment_setup/Installing_software">Grundlegende Software installiert</a> und grundlegendes Wissen über <a href="/de/docs/Learn_web_development/Getting_started/Your_first_website">clientseitige Webtechnologien</a>. </td> </tr> <tr> <th scope="row">Ziel:</th> <td> Erlernen der verschiedenen Videoformate, ihres Einflusses auf die Leistung und wie man den Videoeinfluss auf die gesamte Ladezeit der Seite reduzieren kann, während man die kleinste Videodateigröße basierend auf dem Dateitypunterstützung jedes Browsers bereitstellt. </td> </tr> </tbody> </table></figure></div><section aria-labelledby="warum_sollte_man_multimedia_optimieren"><h2 id="warum_sollte_man_multimedia_optimieren"><a href="#warum_sollte_man_multimedia_optimieren">Warum sollte man Multimedia optimieren?</a></h2><div class="section-content"><p>Bei einer durchschnittlichen Website stammen <a href="https://discuss.httparchive.org/t/state-of-the-web-top-image-optimization-strategies/1367" class="external" target="_blank">25 % der Bandbreite von Videos</a>. Die Optimierung von Videos bietet Potenzial für sehr große Bandbreiteneinsparungen, die sich in einer besseren Website-Performance niederschlagen.</p></div></section><section aria-labelledby="optimierung_der_videobereitstellung"><h2 id="optimierung_der_videobereitstellung"><a href="#optimierung_der_videobereitstellung">Optimierung der Videobereitstellung</a></h2><div class="section-content"><p>Die folgenden Abschnitte beschreiben die nachstehenden Optimierungstechniken:</p> <ul> <li><a href="#alle_videos_komprimieren">alle Videos komprimieren</a></li> <li><a href="#optimize_source_order"><code><source></code>-Reihenfolge optimieren</a></li> <li><a href="#audio_von_stummgeschalteten_hero-videos_entfernen">Audio von stummgeschalteten Videos entfernen</a></li> <li><a href="#video-preload">Video-Preload optimieren</a></li> <li><a href="#streaming_in_betracht_ziehen">Streaming in Betracht ziehen</a></li> </ul></div></section><section aria-labelledby="alle_videos_komprimieren"><h3 id="alle_videos_komprimieren"><a href="#alle_videos_komprimieren">Alle Videos komprimieren</a></h3><div class="section-content"><p>Die meisten Videokompressionsverfahren vergleichen benachbarte Frames innerhalb eines Videos, mit dem Ziel, Details zu entfernen, die in beiden Frames identisch sind. Komprimieren Sie das Video und exportieren Sie es in mehrere Videoformate, einschließlich WebM und MPEG-4/H.264.</p> <p>Ihre Videobearbeitungssoftware verfügt wahrscheinlich über eine Funktion zur Dateigrößenreduzierung. Falls nicht, gibt es Online-Tools wie <a href="https://www.ffmpeg.org/" class="external" target="_blank">FFmpeg</a> (im unten stehenden Abschnitt besprochen), die kodieren, dekodieren, konvertieren und andere Optimierungsfunktionen durchführen können.</p></div></section><section aria-labelledby="source-reihenfolge_optimieren"><h3 id="source-reihenfolge_optimieren"><a href="#source-reihenfolge_optimieren"><code><source></code>-Reihenfolge optimieren</a></h3><div class="section-content"><p>Ordnen Sie die Videoquellen von der kleinsten zur größten. Wenn Sie beispielsweise Videokompressionen in den Formaten 10 MB und 12 MB haben, geben Sie zuerst die 10 MB-Ressource an:</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><video width="400" height="300" controls="controls">  <source src="video.webm" type="video/webm" />  <source src="video.mp4" type="video/mp4" /> </video> </code></pre></div> <p>Der Browser lädt das erste Format herunter, das er versteht. Ziel ist es, kleinere Versionen vor größeren Versionen anzubieten. Bei der kleinsten Version sollten Sie sicherstellen, dass das am stärksten komprimierte Video immer noch gut aussieht. Es gibt einige Kompressionsalgorithmen, die Video wie ein animiertes GIF aussehen lassen (schlecht). Auch wenn ein 128 Kb-Video wie eine bessere Benutzererfahrung als ein 10 MB-Download erscheinen mag, kann ein körniges, GIF-ähnliches Video schlecht auf die Marke oder das Projekt zurückfallen.</p></div></section><section aria-labelledby="audio_von_stummgeschalteten_hero-videos_entfernen"><h3 id="audio_von_stummgeschalteten_hero-videos_entfernen"><a href="#audio_von_stummgeschalteten_hero-videos_entfernen">Audio von stummgeschalteten Hero-Videos entfernen</a></h3><div class="section-content"><p>Für Hero-Videos oder andere Videos ohne Audio ist das Entfernen von Audio sinnvoll.</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><video autoplay="" loop="" muted playsinline="" id="hero-video"> <source src="banner_video.webm" type='video/webm; codecs="vp8, vorbis"' /> <source src="web_banner.mp4" type="video/mp4" /> </video> </code></pre></div> <p>Dieses Hero-Video-Code (oben) ist typisch für Konferenzwebsites und Unternehmens-Homepages. Es enthält ein Video, das automatisch abgespielt, geloopt und stummgeschaltet ist. Es gibt keine Bedienelemente, daher gibt es keine Möglichkeit, das Audio zu hören. Das Audio ist oft leer, aber immer noch vorhanden und verbraucht Bandbreite. Es gibt keinen Grund, Audio mit Video zu servieren, das immer stummgeschaltet ist. <strong>Das Entfernen von Audio kann 20 % der Bandbreite sparen.</strong></p> <p>Abhängig von Ihrer Softwareauswahl können Sie Audio während des Exports und der Komprimierung möglicherweise entfernen. Wenn nicht, kann ein kostenloses Dienstprogramm namens <a href="https://www.ffmpeg.org/" class="external" target="_blank">FFmpeg</a> dies für Sie erledigen. Dies ist der FFmpeg-Befehlsstring, um Audio zu entfernen:</p> <div class="code-example"><div class="example-header"><span class="language-name">bash</span></div><pre class="brush: bash notranslate"><code>ffmpeg -i original.mp4 -an -c:v copy audioFreeVersion.mp4 </code></pre></div></div></section><section aria-labelledby="video-preload"><h3 id="video-preload"><a href="#video-preload">Video-Preload</a></h3><div class="section-content"><p>Das <code>preload</code>-Attribut hat drei verfügbare Optionen: <code>auto</code>, <code>metadata</code> und <code>none</code>. Die Standardeinstellung ist <code>metadata</code>. Diese Einstellungen steuern, wie viel von einer Videodatei mit dem Seitenaufruf heruntergeladen wird. Sie können Daten sparen, indem Sie den Download für weniger populäre Videos verzögern.</p> <p>Die Einstellung <code>preload="none"</code> führt dazu, dass nichts vom Video heruntergeladen wird, bis die Wiedergabe beginnt. Dies verzögert den Start, bietet jedoch erhebliche Dateneinsparungen für Videos mit einer geringen Wahrscheinlichkeit der Wiedergabe.</p> <p>Wenn man mehr bescheidene Bandbreiteneinsparungen bieten möchte, kann man mit <code>preload="metadata"</code> bis zu 3 % des Videos bei Seitenaufruf herunterladen. Dies ist eine nützliche Option für einige kleine oder mittelgroße Dateien.</p> <p>Wenn Sie die Einstellung auf <code>auto</code> ändern, weist dies den Browser an, das gesamte Video automatisch herunterzuladen. Tun Sie dies nur, wenn die Wiedergabe sehr wahrscheinlich ist. Andernfalls verschwendet es viel Bandbreite.</p></div></section><section aria-labelledby="streaming_in_betracht_ziehen"><h3 id="streaming_in_betracht_ziehen"><a href="#streaming_in_betracht_ziehen">Streaming in Betracht ziehen</a></h3><div class="section-content"><p><a href="https://www.smashingmagazine.com/2018/10/video-playback-on-the-web-part-2/" class="external" target="_blank">Video-Streaming ermöglicht die Bereitstellung der richtigen Video-Größe und Bandbreite</a> (basierend auf der Netzwerkgeschwindigkeit) für den Endbenutzer. Ähnlich wie bei responsiven Bildern wird das richtige Videoformat an den Browser geliefert, was einen schnellen Videostart, geringes Puffern und optimierte Wiedergabe gewährleistet.</p></div></section><section aria-labelledby="schlussfolgerung"><h2 id="schlussfolgerung"><a href="#schlussfolgerung">Schlussfolgerung</a></h2><div class="section-content"><p>Die Optimierung von Video hat das Potenzial, die Leistung der Website erheblich zu verbessern. Videodateien sind im Vergleich zu anderen Website-Dateien relativ groß und erfordern immer Aufmerksamkeit. Dieser Artikel erklärt, wie man Website-Videos durch Reduzierung der Dateigröße, mit (HTML-) Download-Einstellungen und mit Streaming optimieren kann.</p> <ul class="prev-next"><li><a class="button secondary" href="/de/docs/Learn_web_development/Extensions/Performance/Multimedia"><span class="button-wrap"> Zurück </span></a></li><li><a class="button secondary" href="/de/docs/Learn_web_development/Extensions/Performance"><span class="button-wrap"> Übersicht: Web-Performance</span></a></li><li><a class="button secondary" href="/de/docs/Learn_web_development/Extensions/Performance/JavaScript"><span class="button-wrap"> Weiter </span></a></li></ul></div></section></article><aside class="article-footer"><div class="article-footer-inner"><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" width="162" height="162" viewBox="0 0 162 162" fill="none" role="none"><mask id="b" fill="#fff"><path d="M97.203 47.04c8.113-7.886 18.004-13.871 28.906-17.492a78 78 0 0 1 33.969-3.39c11.443 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contributors. Content available under <a href="/de/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/de/docs/Learn_web_development/Extensions/Performance/video","doc":{"body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<ul class=\"prev-next\"><li><a class=\"button secondary\" href=\"/de/docs/Learn_web_development/Extensions/Performance/Multimedia\"><span class=\"button-wrap\"> Zurück </span></a></li><li><a class=\"button secondary\" href=\"/de/docs/Learn_web_development/Extensions/Performance\"><span class=\"button-wrap\"> Übersicht: Web-Performance</span></a></li><li><a class=\"button secondary\" href=\"/de/docs/Learn_web_development/Extensions/Performance/JavaScript\"><span class=\"button-wrap\"> Weiter </span></a></li></ul>\n<p>Wie wir im vorherigen Abschnitt gelernt haben, machen Medien, nämlich Bilder und Videos, über 70 % der heruntergeladenen Bytes einer durchschnittlichen Website aus. Wir haben bereits einen Blick auf die Optimierung von Bildern geworfen. Dieser Artikel befasst sich mit der Optimierung von Videos, um die Webleistung zu verbessern.</p>\n<figure class=\"table-container\"><table>\n <tbody>\n <tr>\n <th scope=\"row\">Voraussetzungen:</th>\n <td>\n <a href=\"/de/docs/Learn_web_development/Getting_started/Environment_setup/Installing_software\">Grundlegende Software installiert</a> und grundlegendes Wissen über\n <a href=\"/de/docs/Learn_web_development/Getting_started/Your_first_website\">clientseitige Webtechnologien</a>.\n </td>\n </tr>\n <tr>\n <th scope=\"row\">Ziel:</th>\n <td>\n Erlernen der verschiedenen Videoformate, ihres Einflusses auf die Leistung und wie man den Videoeinfluss auf die gesamte Ladezeit der Seite reduzieren kann, während man die kleinste Videodateigröße basierend auf dem Dateitypunterstützung jedes Browsers bereitstellt.\n </td>\n </tr>\n </tbody>\n</table></figure>"}},{"type":"prose","value":{"id":"warum_sollte_man_multimedia_optimieren","title":"Warum sollte man Multimedia optimieren?","isH3":false,"content":"<p>Bei einer durchschnittlichen Website stammen <a href=\"https://discuss.httparchive.org/t/state-of-the-web-top-image-optimization-strategies/1367\" class=\"external\" target=\"_blank\">25 % der Bandbreite von Videos</a>. Die Optimierung von Videos bietet Potenzial für sehr große Bandbreiteneinsparungen, die sich in einer besseren Website-Performance niederschlagen.</p>"}},{"type":"prose","value":{"id":"optimierung_der_videobereitstellung","title":"Optimierung der Videobereitstellung","isH3":false,"content":"<p>Die folgenden Abschnitte beschreiben die nachstehenden Optimierungstechniken:</p>\n<ul>\n<li><a href=\"#alle_videos_komprimieren\">alle Videos komprimieren</a></li>\n<li><a href=\"#optimize_source_order\"><code><source></code>-Reihenfolge optimieren</a></li>\n<li><a href=\"#audio_von_stummgeschalteten_hero-videos_entfernen\">Audio von stummgeschalteten Videos entfernen</a></li>\n<li><a href=\"#video-preload\">Video-Preload optimieren</a></li>\n<li><a href=\"#streaming_in_betracht_ziehen\">Streaming in Betracht ziehen</a></li>\n</ul>"}},{"type":"prose","value":{"id":"alle_videos_komprimieren","title":"Alle Videos komprimieren","isH3":true,"content":"<p>Die meisten Videokompressionsverfahren vergleichen benachbarte Frames innerhalb eines Videos, mit dem Ziel, Details zu entfernen, die in beiden Frames identisch sind. Komprimieren Sie das Video und exportieren Sie es in mehrere Videoformate, einschließlich WebM und MPEG-4/H.264.</p>\n<p>Ihre Videobearbeitungssoftware verfügt wahrscheinlich über eine Funktion zur Dateigrößenreduzierung. Falls nicht, gibt es Online-Tools wie <a href=\"https://www.ffmpeg.org/\" class=\"external\" target=\"_blank\">FFmpeg</a> (im unten stehenden Abschnitt besprochen), die kodieren, dekodieren, konvertieren und andere Optimierungsfunktionen durchführen können.</p>"}},{"type":"prose","value":{"id":"source-reihenfolge_optimieren","title":"<code><source></code>-Reihenfolge optimieren","isH3":true,"content":"<p>Ordnen Sie die Videoquellen von der kleinsten zur größten. Wenn Sie beispielsweise Videokompressionen in den Formaten 10 MB und 12 MB haben, geben Sie zuerst die 10 MB-Ressource an:</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><video width=\"400\" height=\"300\" controls=\"controls\">\n \n <source src=\"video.webm\" type=\"video/webm\" />\n \n <source src=\"video.mp4\" type=\"video/mp4\" />\n</video>\n</code></pre></div>\n<p>Der Browser lädt das erste Format herunter, das er versteht. Ziel ist es, kleinere Versionen vor größeren Versionen anzubieten. Bei der kleinsten Version sollten Sie sicherstellen, dass das am stärksten komprimierte Video immer noch gut aussieht. Es gibt einige Kompressionsalgorithmen, die Video wie ein animiertes GIF aussehen lassen (schlecht). Auch wenn ein 128 Kb-Video wie eine bessere Benutzererfahrung als ein 10 MB-Download erscheinen mag, kann ein körniges, GIF-ähnliches Video schlecht auf die Marke oder das Projekt zurückfallen.</p>"}},{"type":"prose","value":{"id":"audio_von_stummgeschalteten_hero-videos_entfernen","title":"Audio von stummgeschalteten Hero-Videos entfernen","isH3":true,"content":"<p>Für Hero-Videos oder andere Videos ohne Audio ist das Entfernen von Audio sinnvoll.</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><video autoplay=\"\" loop=\"\" muted playsinline=\"\" id=\"hero-video\">\n <source src=\"banner_video.webm\" type='video/webm; codecs=\"vp8, vorbis\"' />\n <source src=\"web_banner.mp4\" type=\"video/mp4\" />\n</video>\n</code></pre></div>\n<p>Dieses Hero-Video-Code (oben) ist typisch für Konferenzwebsites und Unternehmens-Homepages. Es enthält ein Video, das automatisch abgespielt, geloopt und stummgeschaltet ist. Es gibt keine Bedienelemente, daher gibt es keine Möglichkeit, das Audio zu hören. Das Audio ist oft leer, aber immer noch vorhanden und verbraucht Bandbreite. Es gibt keinen Grund, Audio mit Video zu servieren, das immer stummgeschaltet ist. <strong>Das Entfernen von Audio kann 20 % der Bandbreite sparen.</strong></p>\n<p>Abhängig von Ihrer Softwareauswahl können Sie Audio während des Exports und der Komprimierung möglicherweise entfernen. Wenn nicht, kann ein kostenloses Dienstprogramm namens <a href=\"https://www.ffmpeg.org/\" class=\"external\" target=\"_blank\">FFmpeg</a> dies für Sie erledigen. Dies ist der FFmpeg-Befehlsstring, um Audio zu entfernen:</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">bash</span></div><pre class=\"brush: bash notranslate\"><code>ffmpeg -i original.mp4 -an -c:v copy audioFreeVersion.mp4\n</code></pre></div>"}},{"type":"prose","value":{"id":"video-preload","title":"Video-Preload","isH3":true,"content":"<p>Das <code>preload</code>-Attribut hat drei verfügbare Optionen: <code>auto</code>, <code>metadata</code> und <code>none</code>. Die Standardeinstellung ist <code>metadata</code>. Diese Einstellungen steuern, wie viel von einer Videodatei mit dem Seitenaufruf heruntergeladen wird. Sie können Daten sparen, indem Sie den Download für weniger populäre Videos verzögern.</p>\n<p>Die Einstellung <code>preload=\"none\"</code> führt dazu, dass nichts vom Video heruntergeladen wird, bis die Wiedergabe beginnt. Dies verzögert den Start, bietet jedoch erhebliche Dateneinsparungen für Videos mit einer geringen Wahrscheinlichkeit der Wiedergabe.</p>\n<p>Wenn man mehr bescheidene Bandbreiteneinsparungen bieten möchte, kann man mit <code>preload=\"metadata\"</code> bis zu 3 % des Videos bei Seitenaufruf herunterladen. Dies ist eine nützliche Option für einige kleine oder mittelgroße Dateien.</p>\n<p>Wenn Sie die Einstellung auf <code>auto</code> ändern, weist dies den Browser an, das gesamte Video automatisch herunterzuladen. Tun Sie dies nur, wenn die Wiedergabe sehr wahrscheinlich ist. Andernfalls verschwendet es viel Bandbreite.</p>"}},{"type":"prose","value":{"id":"streaming_in_betracht_ziehen","title":"Streaming in Betracht ziehen","isH3":true,"content":"<p><a href=\"https://www.smashingmagazine.com/2018/10/video-playback-on-the-web-part-2/\" class=\"external\" target=\"_blank\">Video-Streaming ermöglicht die Bereitstellung der richtigen Video-Größe und Bandbreite</a> (basierend auf der Netzwerkgeschwindigkeit) für den Endbenutzer. Ähnlich wie bei responsiven Bildern wird das richtige Videoformat an den Browser geliefert, was einen schnellen Videostart, geringes Puffern und optimierte Wiedergabe gewährleistet.</p>"}},{"type":"prose","value":{"id":"schlussfolgerung","title":"Schlussfolgerung","isH3":false,"content":"<p>Die Optimierung von Video hat das Potenzial, die Leistung der Website erheblich zu verbessern. Videodateien sind im Vergleich zu anderen Website-Dateien relativ groß und erfordern immer Aufmerksamkeit. Dieser Artikel erklärt, wie man Website-Videos durch Reduzierung der Dateigröße, mit (HTML-) Download-Einstellungen und mit Streaming optimieren kann.</p>\n<ul class=\"prev-next\"><li><a class=\"button secondary\" href=\"/de/docs/Learn_web_development/Extensions/Performance/Multimedia\"><span class=\"button-wrap\"> Zurück </span></a></li><li><a class=\"button secondary\" href=\"/de/docs/Learn_web_development/Extensions/Performance\"><span class=\"button-wrap\"> Übersicht: Web-Performance</span></a></li><li><a class=\"button secondary\" href=\"/de/docs/Learn_web_development/Extensions/Performance/JavaScript\"><span class=\"button-wrap\"> Weiter </span></a></li></ul>"}}],"isActive":true,"isMarkdown":true,"isTranslated":true,"locale":"de","mdn_url":"/de/docs/Learn_web_development/Extensions/Performance/video","modified":"2025-02-17T00:20:27.000Z","native":"Deutsch","noIndexing":false,"other_translations":[{"locale":"en-US","title":"Multimedia: video","native":"English (US)"},{"locale":"ja","title":"マルチメディア: 動画","native":"日本語"},{"locale":"ko","title":"멀티미디어: 비디오","native":"한국어"},{"locale":"zh-CN","title":"多媒体：视频","native":"中文 (简体)"}],"pageTitle":"Multimedia: video - Lernen Sie Webentwicklung | MDN","parents":[{"uri":"/de/docs/Learn_web_development","title":"Lernen Sie Webentwicklung"},{"uri":"/de/docs/Learn_web_development/Extensions","title":"Erweiterungsmodule"},{"uri":"/de/docs/Learn_web_development/Extensions/Performance","title":"Web-Performance"},{"uri":"/de/docs/Learn_web_development/Extensions/Performance/video","title":"Multimedia: video"}],"popularity":null,"short_title":"Multimedia: video","sidebarHTML":"<ol><li class=\"section\"><a href=\"/de/docs/Learn_web_development/Getting_started\">Einstiegsmodule</a></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Getting_started/Environment_setup\">Umgebung einrichten</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Getting_started/Environment_setup/Installing_software\">Installation grundlegender Software</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Environment_setup/Browsing_the_web\">Surfen im Web</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Environment_setup/Code_editors\">Code-Editor</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Environment_setup/Dealing_with_files\">Umgang mit Dateien</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Environment_setup/Command_line\">Leitfaden für die Befehlszeilen-Einführung</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Getting_started/Your_first_website\">Ihre erste Website</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Getting_started/Your_first_website/What_will_your_website_look_like\">Wie wird Ihre Website aussehen?</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Your_first_website/Creating_the_content\">HTML: Erstellen der Inhalte</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Your_first_website/Styling_the_content\">CSS: Gestaltung des Inhalts</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Your_first_website/Adding_interactivity\">JavaScript: Interaktivität hinzufügen</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Your_first_website/Publishing_your_website\">Veröffentlichen Ihrer Website</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Getting_started/Web_standards\">Webstandards</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Getting_started/Web_standards/How_the_web_works\">How the web works</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Web_standards/The_web_standards_model\">Das Modell der Webstandards</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Web_standards/How_browsers_load_websites\">Wie Browser Websites laden</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Getting_started/Soft_skills\">Soziale Kompetenzen</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Getting_started/Soft_skills/Research_and_learning\">Forschung und Lernen</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Soft_skills/Collaboration_and_teamwork\">Zusammenarbeit und Teamarbeit</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Soft_skills/Workflows_and_processes\">Workflows und Prozesse</a></li><li><a href=\"/de/docs/Learn_web_development/Getting_started/Soft_skills/Job_interviews\">Erfolgreich in Vorstellungsgesprächen</a></li></ol></details></li><li class=\"section\"><a href=\"/de/docs/Learn_web_development/Core\">Kernmodule</a></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Core/Structuring_content\">Inhalte mit HTML strukturieren</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Basic_HTML_syntax\">Grundlegende HTML-Syntax</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Webpage_metadata\">Was befindet sich im Kopf? Metadaten einer Webseite</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Headings_and_paragraphs\">Überschriften und Absätze in HTML</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Emphasis_and_importance\">Hervorhebung und Wichtigkeit</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Lists\">Listen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Structuring_documents\">Strukturierung von Dokumenten</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Advanced_text_features\">Erweiterte Textfunktionen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Creating_links\">Erstellen von Links</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Marking_up_a_letter\">Herausforderung: Eine E-Mail korrekt auszeichnen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Structuring_a_page_of_content\">Herausforderung: Strukturierung einer Inhaltsseite</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/HTML_images\">HTML-Bilder</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/HTML_video_and_audio\">HTML video und audio</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Mozilla_splash_page\">Herausforderung: Mozilla Splash-Seite</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/HTML_table_basics\">Grundlagen von HTML-Tabellen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Table_accessibility\">Barrierefreiheit von HTML-Tabellen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Planet_data_table\">Herausforderung: Strukturierung einer Planeten-Datentabelle</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/HTML_forms\">Formulare und Schaltflächen in HTML</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Structuring_content/Debugging_HTML\">Debugging von HTML</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Core/Styling_basics\">Grundlagen des CSS-Stylings</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/What_is_CSS\">Was ist CSS?</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Getting_started\">Einstieg in CSS</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Styling_a_bio_page\">Herausforderung: Gestaltung einer Biografie-Seite</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Basic_selectors\">Grundlagen der CSS-Selektoren</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Attribute_selectors\">Attribut-Selektoren</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Pseudo_classes_and_elements\">Pseudoklassen und Pseudoelemente</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Combinators\">Kombinatoren</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Box_model\">Das Box-Modell</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Handling_conflicts\">Umgang mit Konflikten</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Values_and_units\">CSS-Werte und -Einheiten</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Sizing\">Größenbestimmung von Elementen in CSS</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Backgrounds_and_borders\">Hintergründe und Rahmen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Overflow\">Überlaufender Inhalt</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Images_media_forms\">Bilder, Medien und Formularelemente</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Tables\">Tabellen stylen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Debugging_CSS\">Debugging CSS</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Fundamental_CSS_comprehension\">Herausforderung: Grundlegendes CSS-Verständnis</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Fancy_letterheaded_paper\">Herausforderung: Erstellung eines ansprechenden Briefpapiers</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Styling_basics/Cool-looking_box\">Herausforderung: Eine cool aussehende Box</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Core/Text_styling\">CSS-Textgestaltung</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Core/Text_styling/Fundamentals\">Grundlegendes zur Text- und Schriftgestaltung</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Text_styling/Styling_lists\">Listen gestalten</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Text_styling/Styling_links\">Gestaltung von Links</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Text_styling/Web_fonts\">Webfonts</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Text_styling/Typesetting_a_homepage\">Herausforderung: Setzen einer Startseite für eine Gemeinschaftsschule</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Core/CSS_layout\">CSS-Layout</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Introduction\">Einführung in CSS-Layout</a></li><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Floats\">Floats</a></li><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Positioning\">Platzierung</a></li><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Flexbox\">Flexbox</a></li><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Grids\">CSS-Grid-Layout</a></li><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Responsive_Design\">Responsives Design</a></li><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Media_queries\">Grundlagen von Media Query</a></li><li><a href=\"/de/docs/Learn_web_development/Core/CSS_layout/Fundamental_Layout_Comprehension\">Herausforderung: Grundlegendes Verständnis von Layouts</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Core/Scripting\">Dynamisches Scripting mit JavaScript</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/What_is_JavaScript\">Was ist JavaScript?</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/A_first_splash\">Erster Einblick in JavaScript</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/What_went_wrong\">Was ist schiefgelaufen? JavaScript-Fehlerbehebung</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Variables\">Speichern der benötigten Informationen — Variablen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Math\">Grundlegende Mathematik in JavaScript – Zahlen und Operatoren</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Strings\">Umgang mit Text — Zeichenketten in JavaScript</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Useful_string_methods\">Nützliche String-Methoden</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Arrays\">Arrays</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Silly_story_generator\">Herausforderung: Blödsinnige Geschichtengenerator</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Conditionals\">Entscheidungen in Ihrem Code treffen — Konditionalen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Loops\">Code-Schleifen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Functions\">Funktionen — wiederverwendbare Codeblöcke</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Build_your_own_function\">Erstellen Sie Ihre eigene Funktion</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Return_values\">Funktionsrückgabewerte</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Events\">Einführung in Ereignisse</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Event_bubbling\">Ereignis-Bubbling</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Image_gallery\">Herausforderung: Bildergalerie</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Object_basics\">JavaScript-Objektgrundlagen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/DOM_scripting\">Einführung in DOM-Scripting</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Network_requests\">Netzwerkanfragen mit JavaScript</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/JSON\">Arbeiten mit JSON</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Scripting/Debugging_JavaScript\">Debugging JavaScript and handling errors</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries\">JavaScript-Frameworks und -Bibliotheken</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/Introduction\">Einführung in client-seitige Frameworks</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/Main_features\">Hauptmerkmale von Frameworks</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/React_getting_started\">Erste Schritte mit React</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/React_todo_list_beginning\">Beginn unserer React To-Do-Liste</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/React_components\">Komponenten in unserer React-App erstellen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/React_interactivity_events_state\">React Interaktivität: Events und State</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/React_interactivity_filtering_conditional_rendering\">Reaktivität in React: Bearbeiten, Filtern, bedingtes Rendern</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/React_accessibility\">Barrierefreiheit in React</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Frameworks_libraries/React_resources\">React-Ressourcen</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Core/Accessibility\">Barrierefreiheit</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/What_is_accessibility\">Was ist Barrierefreiheit?</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/Tooling\">Barrierefreiheitstools und unterstützende Technologien</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/HTML\">HTML: Eine gute Grundlage für Barrierefreiheit</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/CSS_and_JavaScript\">CSS and JavaScript Zugänglichkeitsbest Practices</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/WAI-ARIA_basics\">WAI-ARIA Grundlagen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/Multimedia\">Barrierefreie Multimedia-Inhalte</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/Mobile\">Mobile Accessibility</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Accessibility/Accessibility_troubleshooting\">Herausforderung: Barrierefreiheits-Fehlerbehebung</a></li></ol></details></li><li><a href=\"/de/docs/Learn_web_development/Core/Design_for_developers\">Design für Entwickler:innen</a></li><li><a href=\"/de/docs/Learn_web_development/Core/Version_control\">Versionskontrolle</a></li><li class=\"section\"><a href=\"/de/docs/Learn_web_development/Extensions\">Erweiterungsmodule</a></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Advanced_JavaScript_objects\">Advanced JavaScript objects</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Advanced_JavaScript_objects/Object_prototypes\">Objektprototypen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Advanced_JavaScript_objects/Object-oriented_programming\">Objektorientierte Programmierung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Advanced_JavaScript_objects/Classes_in_JavaScript\">Klassen in JavaScript</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Advanced_JavaScript_objects/Object_building_practice\">Objektbaupraxis</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Advanced_JavaScript_objects/Adding_bouncing_balls_features\">Herausforderung: Hinzufügen von Funktionen zu unserem hüpfenden Ball-Demo</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_APIs\">Client-seitige Web-APIs</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_APIs/Introduction\">Einführung in Web-APIs</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_APIs/Video_and_audio_APIs\">Video- und Audio-APIs</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_APIs/Drawing_graphics\">Zeichnen von Grafiken</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_APIs/Client-side_storage\">Client-seitiger Speicher</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_APIs/Third_party_APIs\">Third-party APIs</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Async_JS\">Asynchrones JavaScript</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Async_JS/Introducing\">Einführung in asynchrones JavaScript</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Async_JS/Promises\">Anleitung zur Verwendung von Promises</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Async_JS/Implementing_a_promise-based_API\">Wie man eine Promise-basierte API implementiert</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Async_JS/Introducing_workers\">Einführung in Worker</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Async_JS/Sequencing_animations\">Herausforderung: Animationen sequenzieren</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Forms\">Webformulare — Arbeiten mit Benutzerdaten</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/Your_first_form\">Ihr erstes Formular</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/How_to_structure_a_web_form\">Wie man ein Webformular strukturiert</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/Basic_native_form_controls\">Grundlegende native Formularsteuerungen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/HTML5_input_types\">Die HTML5-Eingabetypen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/Other_form_controls\">Andere Formularelemente</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/Styling_web_forms\">Styling von Webformularen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/Advanced_form_styling\">Fortgeschrittenes Formular-Styling</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/UI_pseudo-classes\">UI-Pseudoklassen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/Form_validation\">Client-seitige Formularvalidierung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Forms/Sending_and_retrieving_form_data\">Senden von Formulardaten</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_tools\">Verständnis für clientseitige Tools</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_tools/Overview\">Überblick über Client-seitige Tools</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_tools/Package_management\">Grundlagen des Paketmanagements</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_tools/Introducing_complete_toolchain\">Einführung in eine vollständige Werkzeugkette</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Client-side_tools/Deployment\">Bereitstellung unserer App</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Server-side\">Serverseitige Programmierung</a></summary><ol><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/First_steps\">Erste Schritte auf der Serverseite</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/First_steps/Introduction\">Einführung in die Server-Seite</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/First_steps/Client-Server_overview\">Überblick über Client-Server</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/First_steps/Web_frameworks\">Server-seitige Web-Frameworks</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/First_steps/Website_security\">Website-Sicherheit</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django\">Django Web-Framework (Python)</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Introduction\">Einführung in Django</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/development_environment\">Einrichten einer Django-Entwicklungsumgebung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Tutorial_local_library_website\">Django Tutorial: Die Website der lokalen Bibliothek</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/skeleton_website\">Django-Tutorial Teil 2: Erstellen einer Skelett-Website</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Models\">Django Tutorial Teil 3: Verwenden von Modellen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Admin_site\">Django Tutorial Teil 4: Die Django Admin-Seite</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Home_page\">Django Tutorial Teil 5: Erstellen unserer Homepage</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Generic_views\">Django Tutorial Teil 6: Generische Listen- und Detailansichten</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Sessions\">Django-Tutorial Teil 7: Sitzungs-Framework</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Authentication\">Django-Tutorial Teil 8: Benutzer-Authentifizierung und -Berechtigungen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Forms\">Django Tutorial Teil 9: Arbeiten mit Formularen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Testing\">Django Tutorial Teil 10: Testen einer Django-Webanwendung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/Deployment\">Django-Tutorial Teil 11: Bereitstellung von Django für die Produktion</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/web_application_security\">Django Webanwendungssicherheit</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Django/django_assessment_blog\">Bewertung: DIY Django Mini-Blog</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs\">Express Web-Framework (Node.js)</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/Introduction\">Einführung in Express/Node</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/development_environment\">Einrichten einer Node-Entwicklungsumgebung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/Tutorial_local_library_website\">Express Tutorial: Die Website der lokalen Bibliothek</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/skeleton_website\">Express-Tutorial Teil 2: Erstellen einer Skelett-Website</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/mongoose\">Express-Tutorial Teil 3: Verwendung einer Datenbank (mit Mongoose)</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/routes\">Express Tutorial Teil 4: Routen und Controller</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/Displaying_data\">Express Tutorial Teil 5: Bibliotheksdaten anzeigen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/forms\">Express Tutorial Teil 6: Arbeiten mit Formularen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Server-side/Express_Nodejs/deployment\">Express Tutorial Teil 7: Bereitstellung im Produktionsumfeld</a></li></ol></details></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary><a href=\"/de/docs/Learn_web_development/Extensions/Performance\">Web-Performance</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/why_web_performance\">Das \"Warum\" der Web-Performance</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/What_is_web_performance\">Was ist Web-Performance?</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/Perceived_performance\">Wahrgenommene Leistung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/Measuring_performance\">Leistungsmessung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/Multimedia\">Multimedia: Bilder</a></li><li><em><a href=\"/de/docs/Learn_web_development/Extensions/Performance/video\" aria-current=\"page\">Multimedia: video</a></em></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/JavaScript\">JavaScript-Leistungsoptimierung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/HTML\">HTML-Performance-Optimierung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/CSS\">CSS-Leistungsoptimierung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Performance/business_case_for_performance\">Der geschäftliche Nutzen der Web-Performance</a></li></ol></details></li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Extensions/Testing\">Tests</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Extensions/Testing/Introduction\">Einführung in das Cross-Browser-Testing</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Testing/Testing_strategies\">Strategien zur Durchführung von Tests</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Testing/HTML_and_CSS\">Umgang mit häufigen HTML- und CSS-Problemen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Testing/Feature_detection\">Implementierung der Funktionsprüfung</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Testing/Automated_testing\">Einführung in automatisiertes Testen</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Testing/Your_own_automation_environment\">Einrichtung Ihrer eigenen Testautomatisierungsumgebung</a></li></ol></details></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Transform_animate\">CSS transformieren und animieren</a></li><li><a href=\"/de/docs/Learn_web_development/Extensions/Security_privacy\">Sicherheit und Datenschutz</a></li><li class=\"section\">Weitere Ressourcen</li><li class=\"toggle\"><details><summary><a href=\"/de/docs/Learn_web_development/Howto\">Häufige Probleme lösen</a></summary><ol><li><a href=\"/de/docs/Learn_web_development/Howto/Solve_HTML_problems\">Häufige HTML-Probleme lösen</a></li><li><a href=\"/de/docs/Learn_web_development/Howto/Solve_CSS_problems\">Häufige CSS-Probleme lösen</a></li><li><a href=\"/de/docs/Learn_web_development/Howto/Solve_JavaScript_problems\">Häufige JavaScript-Probleme lösen</a></li><li><a href=\"/de/docs/Learn_web_development/Howto/Web_mechanics\">Webmechanik</a></li><li><a href=\"/de/docs/Learn_web_development/Howto/Tools_and_setup\">Tools und Einrichtung</a></li><li><a href=\"/de/docs/Learn_web_development/Howto/Design_and_accessibility\">Design und Barrierefreiheit</a></li></ol></details></li><li><a href=\"/de/docs/Learn_web_development/About\">Über</a></li><li><a href=\"/de/docs/Learn_web_development/Educators\">Ressourcen für Lehrkräfte</a></li><li><a href=\"/de/docs/Learn_web_development/Changelog\">Änderungsprotokoll</a></li></ol>","source":{"folder":"de/learn_web_development/extensions/performance/video","github_url":"https://github.com/mdn/translated-content-de/blob/main/files/de/learn_web_development/extensions/performance/video/index.md","last_commit_url":"https://github.com/mdn/translated-content-de/commit/452fe502cfb4c9a91c346af17370ecfb6a8bd17e","filename":"index.md"},"summary":"Wie wir im vorherigen Abschnitt gelernt haben, machen Medien, nämlich Bilder und Videos, über 70 % der heruntergeladenen Bytes einer durchschnittlichen Website aus. Wir haben bereits einen Blick auf die Optimierung von Bildern geworfen. Dieser Artikel befasst sich mit der Optimierung von Videos, um die Webleistung zu verbessern.","title":"Multimedia: video","toc":[{"text":"Warum sollte man Multimedia optimieren?","id":"warum_sollte_man_multimedia_optimieren"},{"text":"Optimierung der Videobereitstellung","id":"optimierung_der_videobereitstellung"},{"text":"Schlussfolgerung","id":"schlussfolgerung"}],"pageType":"learn-module-chapter"}}</script></body></html>