Firefox Beta 133.0beta, See All New Features, Updates and Fixes

<!doctype html> <html class="windows no-js" lang="en" dir="ltr" data-country-code="HK" data-needs-consent="False" data-latest-firefox="132.0.2" data-esr-versions="128.4.0" data-gtm-container-id="GTM-MW3R8V" data-stub-attribution-rate="1.0" data-sentry-dsn="https://c3ab8514873549d5b3785ebc7fb83c80@o1069899.ingest.sentry.io/6260331" > <head> <meta charset="utf-8">  <script src="https://www.mozilla.org/media/js/site.b49d941e3374.js"></script>    <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Firefox Beta 133.0beta, See All New Features, Updates and Fixes</title> <meta name="description" content=""> <meta property="og:type" content="website"> <meta property="og:site_name" content="Mozilla"> <meta property="og:locale" content="en_US"> <meta property="og:url" content="https://www.mozilla.org/en-US/firefox/133.0beta/releasenotes/"> <meta property="og:image" content="https://www.mozilla.org/media/protocol/img/logos/firefox/browser/og.4ad05d4125a5.png"> <meta property="og:title" content="Firefox Beta 133.0beta, See All New Features, Updates and Fixes"> <meta property="og:description" content=""> <meta property="fb:page_id" content="14696440021"> <meta name="twitter:card" content="summary_large_image"> <meta name="twitter:site" content="@firefox"> <meta name="twitter:domain" content="mozilla.org"> <meta name="twitter:app:name:googleplay" content="Firefox"> <meta name="twitter:app:id:googleplay" content="org.mozilla.firefox"> <meta name="twitter:app:name:iphone" content="Firefox"> <meta name="twitter:app:id:iphone" content="989804926"> <meta name="twitter:app:name:ipad" content="Firefox"> <meta name="twitter:app:id:ipad" content="989804926"> <link rel="apple-touch-icon" type="image/png" sizes="180x180" href="https://www.mozilla.org/media/img/favicons/firefox/browser/apple-touch-icon.79c2abeb4e35.png"> <link rel="icon" type="image/png" sizes="196x196" href="https://www.mozilla.org/media/img/favicons/firefox/browser/favicon-196x196.59e3822720be.png"> <link rel="shortcut icon" href="https://www.mozilla.org/media/img/favicons/firefox/browser/favicon.f093404c0135.ico"> <link rel="canonical" href="https://www.mozilla.org/en-US/firefox/133.0beta/releasenotes/"> <link rel="alternate" hreflang="en" href="https://www.mozilla.org/en-US/firefox/133.0beta/releasenotes/" title="English"> <link rel="alternate" hreflang="en-US" href="https://www.mozilla.org/en-US/firefox/133.0beta/releasenotes/" title="English (USA)"> <link href="https://mastodon.social/@mozilla" rel="me">    <link href="https://www.mozilla.org/media/css/protocol-firefox.5ac651456e76.css" rel="stylesheet" type="text/css"> <link href="https://www.mozilla.org/media/css/protocol-callout.036d0086522d.css" rel="stylesheet" type="text/css"> <link href="https://www.mozilla.org/media/css/protocol-article.8b6f2f97a48d.css" rel="stylesheet" type="text/css"> <link href="https://www.mozilla.org/media/css/firefox_releasenotes.9f303c4c2bda.css" rel="stylesheet" type="text/css">        <script src="https://www.mozilla.org/media/js/gtm-snippet.b5b7c885f8fa.js"></script>  </head> <body id="notes" class="html-ltr mzp-t-firefox " data-global-nav-current-link="firefox"> <div id="strings" data-global-close="Close" data-global-next="Next" data-global-previous="Previous" ></div> <aside class="moz-consent-banner" id="moz-consent-banner" role="region" aria-label="Cookie Banner" data-nosnippet="true" data-testid="consent-banner"> <div class="moz-consent-banner-content"> <h2 class="moz-consent-banner-heading">Help us improve your Mozilla experience</h2> <div class="moz-consent-banner-copy"> <p>In addition to Cookies necessary for this site to function, we’d like your permission to set some additional Cookies to better understand your browsing needs and improve your experience. 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projects"> <img loading="lazy" src="https://www.mozilla.org/media/img/logos/fakespot/logo-blue.3973b8fe9631.svg" class="c-menu-item-icon" width="32" height="32" alt=""> <h4 class="c-menu-item-title">Fakespot</h4> <p class="c-menu-item-desc">Use AI to detect fake reviews and scams</p> </a> </section> </li> </ul> <p class="c-menu-category-link"><a href="/en-US/products/" data-link-text="View all Products" data-link-position="topnav - products">View all Products</a></p> </div> </div> </div> </li> <li class="c-menu-category mzp-has-drop-down mzp-js-expandable"> <a class="c-menu-title" href="/en-US/about/" aria-haspopup="true" aria-controls="c-menu-panel-about" data-testid="navigation-link-who-we-are">Who We Are</a> <div class="c-menu-panel" id="c-menu-panel-about" data-testid="navigation-menu-who-we-are"> <div class="c-menu-panel-container"> <button class="c-menu-button-close" type="button" aria-controls="c-menu-panel-about">Close Who We Are menu</button> <div class="c-menu-panel-content"> <ul class="mzp-l-rows-four"> <li> <section class="c-menu-item mzp-has-icon"> <a class="c-menu-item-link" href="/en-US/about/manifesto/" data-link-text="Mozilla Manifesto" data-link-position="topnav - 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who-we-are"> <svg class="c-menu-item-icon" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32"><path fill="#42435a" d="M21.1 7.5c-.2-.2-.2-.5 0-.7l.5-.5c.8-.8 2.1-.8 2.9 0l1.2 1.2c.8.8.8 2.1 0 2.9l-.5.5c-.2.2-.5.2-.7 0l-3.4-3.4zm2.3 4.5c.2.2.2.5 0 .7L12.7 23.4c-.2.2-.4.3-.6.4l-5.7 2.4c-.3.1-.6 0-.7-.3-.1-.1-.1-.3 0-.4L8.1 20c.1-.2.3-.5.4-.6L19.2 8.6c.2-.2.5-.2.7 0l3.5 3.4zM11.5 22.7l-3.9 1.7 1.7-3.9c0-.1.1-.2.2-.2l2.3 2.3c-.1 0-.2.1-.3.1z"></path></svg> <h4 class="c-menu-item-title">Mozilla Blog</h4> <p class="c-menu-item-desc">Learn about Mozilla and the issues that matter to us.</p> </a> </section> </li> <li> <section class="c-menu-item mzp-has-icon"> <a class="c-menu-item-link" href="/en-US/impact/" data-link-text="Impact" data-link-position="topnav - who-we-are"> <svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" class="c-menu-item-icon"><g transform="translate(4 1)" fill="none"><path d="M.4 14.7 4 12v7l-2.4 1.8A1 1 0 0 1 0 20v-4.5a1 1 0 0 1 .4-.8zM15.6 14.7 12 12v7l2.4 1.8A1 1 0 0 0 16 20v-4.5a1 1 0 0 0-.4-.8z" stroke="#42435a" stroke-width="2"/><path d="M5.137 4.14 7.127.569a1 1 0 0 1 1.747 0l1.989 3.57A9 9 0 0 1 12 8.52V19.02H4V8.52a9 9 0 0 1 1.137-4.38z" stroke="#42435a" stroke-width="2"/><circle cx="8" cy="8" r="1.5" fill="#42435a"/><path d="M7.95 16v6" stroke="#42435a" stroke-linecap="round" stroke-width="2"/></g></svg> <h4 class="c-menu-item-title">Impact</h4> <p class="c-menu-item-desc">Find out how we’re making the internet more inclusive and sustainable</p> </a> </section> </li> </ul> <p class="c-menu-category-link"> <a href="/en-US/about/" data-link-text="More About Mozilla" data-link-position="topnav - who-we-are">More About Mozilla</a> </p> </div> </div> </div> </li> <li class="c-menu-category mzp-has-drop-down mzp-js-expandable"> <a class="c-menu-title" href="https://future.mozilla.org/?utm_source=www.mozilla.org&utm_medium=referral&utm_campaign=nav&utm_content=innovation" aria-haspopup="true" aria-controls="c-menu-panel-innovation" data-testid="navigation-link-innovation">Innovation</a> <div class="c-menu-panel" id="c-menu-panel-innovation" data-testid="navigation-menu-innovation"> <div class="c-menu-panel-container"> <button class="c-menu-button-close" type="button" aria-controls="c-menu-panel-innovation">Close Innovation menu</button> <div class="c-menu-panel-content"> <ul class="mzp-l-rows-two"> <li> <section class="c-menu-item mzp-has-icon"> <a class="c-menu-item-link" href="/en-US/firefox/developer/" data-link-text="Firefox Developer Edition" data-link-position="topnav - innovation"> <img loading="lazy" src="https://www.mozilla.org/media/protocol/img/logos/firefox/browser/developer/logo.41d42822c8fb.svg" class="c-menu-item-icon" width="32" height="32" alt=""> <h4 class="c-menu-item-title">Firefox Developer Edition</h4> <p class="c-menu-item-desc">Get the Firefox browser built just for developers.</p> </a> </section> </li> <li> <section class="c-menu-item mzp-has-icon"> <a class="c-menu-item-link" href="https://developer.mozilla.org/?utm_source=www.mozilla.org&utm_medium=referral&utm_campaign=nav&utm_content=innovation" data-link-text="MDN Web Docs" data-link-position="topnav - innovation"> <img loading="lazy" class="c-menu-item-icon" src="https://www.mozilla.org/media/img/nav/icons/icon-mdn-web-docs.9ed01cfe71c7.svg" alt=""> <h4 class="c-menu-item-title">MDN Web Docs</h4> <p class="c-menu-item-desc">Check out the home for web developer resources.</p> </a> </section> </li> <li> <section class="c-menu-item mzp-has-icon"> <a class="c-menu-item-link" href="https://future.mozilla.org/?utm_source=www.mozilla.org&utm_medium=referral&utm_campaign=nav&utm_content=innovation" data-link-text="Mozilla Innovation Projects" data-link-position="topnav - innovation"> <img loading="lazy" class="c-menu-item-icon" src="https://www.mozilla.org/media/img/nav/icons/icon-innovation-projects.11f189479119.svg" alt=""> <h4 class="c-menu-item-title">Mozilla Innovation Projects</h4> <p class="c-menu-item-desc">Discover ways to bring bright ideas to life.</p> </a> </section> </li> <li> <section class="c-menu-item mzp-has-icon"> <a class="c-menu-item-link" href="https://commonvoice.mozilla.org/?utm_source=www.mozilla.org&utm_medium=referral&utm_campaign=nav&utm_content=innovation" data-link-text="Common Voice" data-link-position="topnav - innovation"> <img loading="lazy" class="c-menu-item-icon" src="https://www.mozilla.org/media/img/nav/icons/icon-common-voice.127fa3f5dcb0.svg" alt=""> <h4 class="c-menu-item-title">Common Voice</h4> <p class="c-menu-item-desc">Donate your voice so the future of the web can hear everyone.</p> </a> </section> </li> </ul> </div> </div> </div> </li> </ul> </nav> </div> </div> </div> </div> </div>    <nav class="c-sub-navigation"> <div class="mzp-l-content"> <div class="c-sub-navigation-content"> <h2 class="c-sub-navigation-title"> Release Notes </h2> <div class="c-sub-navigation-mobile-toggle is-summary" data-testid="sub-navigation-mobile-toggle"> <span>Menu</span> </div> <ul class="c-sub-navigation-list is-details is-closed" data-testid="sub-navigation-menu"> <li class="c-sub-navigation-item"> <a href="/en-US/firefox/notes/" data-link-position="subnav" data-link-text="Desktop" > Desktop </a> </li> <li class="c-sub-navigation-item"> <a href="/en-US/firefox/beta/notes/" data-link-position="subnav" data-link-text="Desktop Beta and Developer Edition" aria-current="page" > Desktop Beta & Developer Edition </a> </li> <li class="c-sub-navigation-item"> <a href="/en-US/firefox/nightly/notes/" data-link-position="subnav" data-link-text="Desktop Nightly" > Desktop Nightly </a> </li> <li class="c-sub-navigation-item"> <a href="/en-US/firefox/android/notes/" data-link-position="subnav" data-link-text="Android" > Android </a> </li> <li class="c-sub-navigation-item"> <a href="/en-US/firefox/ios/notes/" data-link-position="subnav" data-link-text="iOS" > iOS </a> </li> </ul> </div> </div> </nav> <div id="outer-wrapper"> <main> <article id="main-content"> <header class="notes-head"> <div class="intro"> <div class="container"> <section class="mzp-c-callout mzp-t-firefox mzp-t-background-tertiary t-beta"> <div class="mzp-l-content mzp-t-content-lg "> <div class="mzp-t-callout-brand mzp-c-logo mzp-t-logo-lg mzp-t-product-beta"></div> <h1 class="mzp-c-callout-title">Firefox Beta and Developer Edition <br> Release Notes</h1> <p class="mzp-c-callout-desc">Release Notes tell you what’s new in Firefox. As always, we welcome your <a href="https://input.mozilla.org/feedback/firefox/133.0beta?utm_source=releasenotes">feedback</a>. You can also <a href="https://bugzilla.mozilla.org/">file a bug in Bugzilla</a> or see the <a href="/en-US/firefox/133.0beta/system-requirements/">system requirements</a> of this release.</p> <div class="c-download-cta"> <div id="download-beta-primary" class="download-button download-button-beta download-button-desktop mzp-c-button-download-container"> <div class="nojs-download"> <div class="download download-dumb"> <p role="heading" class="download-heading"> Firefox Beta — English (US) </p> <ul> <li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64" data-cta-text="Download Firefox for Windows 64-bit" data-cta-type="firefox">Windows 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-msi" data-cta-text="Download Firefox for Windows 64-bit MSI" data-cta-type="firefox">Windows 64-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=win64-aarch64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-aarch64" data-cta-text="Download Firefox for Windows ARM64/AArch64" data-cta-type="firefox">Windows ARM64/AArch64</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win" data-cta-text="Download Firefox for Windows 32-bit" data-cta-type="firefox">Windows 32-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win-msi" data-cta-text="Download Firefox for Windows 32-bit MSI" data-cta-type="firefox">Windows 32-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=osx&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="osx" data-cta-text="Download Firefox for macOS" data-cta-type="firefox">macOS</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux64" data-cta-text="Download Firefox for Linux 64-bit" data-cta-type="firefox">Linux 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux" data-cta-text="Download Firefox for Linux 32-bit" data-cta-type="firefox">Linux 32-bit</a> </li> </ul> </div> </div> <div class="unrecognized-download" data-nosnippet="true"> <p>Your system may not meet the requirements for Firefox, but you can try one of these versions:</p> <div class="download download-dumb"> <p role="heading" class="download-heading"> Firefox Beta — English (US) </p> <ul> <li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64" data-cta-text="Download Firefox for Windows 64-bit" data-cta-type="firefox">Windows 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-msi" data-cta-text="Download Firefox for Windows 64-bit MSI" data-cta-type="firefox">Windows 64-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=win64-aarch64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-aarch64" data-cta-text="Download Firefox for Windows ARM64/AArch64" data-cta-type="firefox">Windows ARM64/AArch64</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win" data-cta-text="Download Firefox for Windows 32-bit" data-cta-type="firefox">Windows 32-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win-msi" data-cta-text="Download Firefox for Windows 32-bit MSI" data-cta-type="firefox">Windows 32-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=osx&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="osx" data-cta-text="Download Firefox for macOS" data-cta-type="firefox">macOS</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux64" data-cta-text="Download Firefox for Linux 64-bit" data-cta-type="firefox">Linux 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux" data-cta-text="Download Firefox for Linux 32-bit" data-cta-type="firefox">Linux 32-bit</a> </li> </ul> </div> </div> <div class="fx-unsupported-message win" data-nosnippet="true"> <p><strong>Firefox Beta is <a href="https://support.mozilla.org/kb/firefox-users-windows-7-8-and-81-moving-extended-support">no longer supported</a> on Windows 8.1 and below.</strong></p> <p>Please download Firefox ESR (Extended Support Release) to use Firefox.</p> <div class="download-platform-list"> <p> <a class="mzp-c-button mzp-t-product download-link os_win64 ga-product-download" href="https://download.mozilla.org/?product=firefox-esr115-latest-ssl&os=win64&lang=en-US" data-download-version="win64" data-cta-text="Download Firefox Extended Support Release 64-bit" data-cta-type="firefox"> Download Firefox ESR 64-bit </a> </p> <p> <a class="mzp-c-button mzp-t-product download-link os_win ga-product-download" href="https://download.mozilla.org/?product=firefox-esr115-latest-ssl&os=win&lang=en-US" data-download-version="win" data-cta-text="Download Firefox Extended Support Release 32-bit" data-cta-type="firefox"> Download Firefox ESR 32-bit </a> </p> <small class="fx-unsupported-message-all-link"> <a href="/en-US/firefox/all/desktop-esr/"> Download a different build </a> </small> </div> </div> <div class="fx-unsupported-message mac" data-nosnippet="true"> <p><strong>Firefox Beta is <a href="https://support.mozilla.org/kb/firefox-users-macos-1012-1013-1014-moving-to-extended-support">no longer supported</a> on macOS 10.14 and below.</strong></p> <p>Please download Firefox ESR (Extended Support Release) to use Firefox.</p> <div class="download-platform-list"> <a class="mzp-c-button mzp-t-product download-link ga-product-download" href="https://download.mozilla.org/?product=firefox-esr115-latest-ssl&os=osx&lang=en-US" data-download-version="osx" data-cta-text="Firefox Extended Support Release MacOS" data-cta-type="firefox"> Download Firefox ESR </a> </div> </div> <ul class="download-list"> <li class="os_win64"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-win64" href="https://download.mozilla.org/?product=firefox-beta-stub&os=win64&lang=en-US" data-download-version="win64" data-cta-text="Download Firefox for Windows 64-bit" data-testid="download-beta-primary-win64" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win64-msi"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-win64-msi" href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win64&lang=en-US" data-download-version="win64-msi" data-cta-text="Download Firefox for Windows 64-bit MSI" data-testid="download-beta-primary-win64-msi" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win64-aarch64"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-win64-aarch64" href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=win64-aarch64&lang=en-US" data-download-version="win64-aarch64" data-cta-text="Download Firefox for Windows ARM64/AArch64" data-testid="download-beta-primary-win64-aarch64" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-win" href="https://download.mozilla.org/?product=firefox-beta-stub&os=win&lang=en-US" data-download-version="win" data-cta-text="Download Firefox for Windows 32-bit" data-testid="download-beta-primary-win" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win-msi"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-win-msi" href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win&lang=en-US" data-download-version="win-msi" data-cta-text="Download Firefox for Windows 32-bit MSI" data-testid="download-beta-primary-win-msi" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_osx"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-osx" href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=osx&lang=en-US" data-download-version="osx" data-cta-text="Download Firefox for macOS" data-testid="download-beta-primary-osx" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_linux64"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-linux64" href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux64&lang=en-US" data-download-version="linux64" data-cta-text="Download Firefox for Linux 64-bit" data-testid="download-beta-primary-linux64" data-cta-type="firefox" > <strong class="download-title"> Download for Linux 64-bit </strong> </a> </li> <li class="os_linux"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-primary-linux" href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux&lang=en-US" data-download-version="linux" data-cta-text="Download Firefox for Linux 32-bit" data-testid="download-beta-primary-linux" data-cta-type="firefox" > <strong class="download-title"> Download for Linux 32-bit </strong> </a> </li> </ul> <small class="fx-privacy-link mzp-c-button-download-privacy-link"> <a href="/en-US/privacy/firefox/"> Firefox Privacy Notice </a> </small> </div> </div> </div> </section> </div> <div class="mzp-l-content mzp-has-sidebar mzp-l-sidebar-left"> <div class="mzp-l-sidebar"> <h2 class="c-release-summary"> <span class="c-release-version">133.0beta</span> <span class="c-release-product">Firefox Beta</span> </h2> <p class="c-release-date">October 29, 2024</p> </div> <div class="mzp-l-main mzp-l-article"> <div class="c-release-first-title">Version 133.0beta, first offered to Beta channel users on October 29, 2024</div> <div class="c-release-first-text"><p>Firefox Beta gets updated 3 times a week and as a consequence, the release notes for the Beta channel are updated continuously to reflect features that have reached sufficient maturity to benefit from community feedback and bug reports.</p> <p><strong>Warning: Features listed here may or may <em>not</em> make a final release of Firefox.</strong></p> <p>In addition to these release notes, you can follow ongoing development via our <a href="https://x.com/firefoxbeta">@FirefoxBeta</a> X account.</p></div> </div> </div> </header> <section class="c-release-notes"> <div class="mzp-l-content mzp-has-sidebar mzp-l-sidebar-left"> <div class="mzp-l-sidebar"> <img class="sidebar-icon" alt="" src="https://www.mozilla.org/media/protocol/img/icons/highlight.07fce9e0e5f3.svg" width="30" height="30"> <h3>New</h3> </div> <div class="mzp-l-main mzp-l-article"> <ul> <li class="release-note" id="note-790415"> <div class="release-note-content"> <p>You can now show tabs from other devices in the <a href="https://support.mozilla.org/kb/tab-overview-menu">Tab overview</a> menu.</p> </div> </li> <li class="release-note" id="note-790447"> <div class="release-note-content"> <p>GPU-accelerated Canvas2D is enabled by default on Windows.</p> </div> </li> <li class="release-note" id="note-790453"> <div class="release-note-content"> <p>Desktop mode browsing is now enabled by default for large devices on <a href="https://play.google.com/store/apps/details?id=org.mozilla.firefox_beta">Firefox for Android</a>. This can be controlled via a preference under Settings in "Site settings" previously named "Site permissions".</p> </div> </li> <li class="release-note" id="note-790486"> <div class="release-note-content"> <p>When copying text to the clipboard in Private Browsing mode, <a href="https://play.google.com/store/apps/details?id=org.mozilla.firefox_beta">Firefox for Android</a> now handles it as sensitive content. The toast notification for the clipboard is masked on Android 13 and higher.</p> </div> </li> <li class="release-note" id="note-790488"> <div class="release-note-content"> <p>Firefox now has a new anti-tracking feature enabled in <a href="https://support.mozilla.org/kb/enhanced-tracking-protection-firefox-desktop">Enhanced Tracking Protection</a> "strict" mode: Bounce Tracking Protection. This protection detects bounce trackers based on <a href="https://blog.mozilla.org/security/2020/08/04/firefox-79-includes-protections-against-redirect-tracking/">redirect behavior</a> and periodically purges their cookies and site data to prevent tracking.</p> </div> </li> </ul> </div> </div> <div class="mzp-l-content mzp-has-sidebar mzp-l-sidebar-left"> <div class="mzp-l-sidebar"> <img class="sidebar-icon" alt="" src="https://www.mozilla.org/media/protocol/img/icons/check.6ae3794b67ae.svg" width="30" height="30"> <h3>Fixed</h3> </div> <div class="mzp-l-main mzp-l-article"> <ul> <li class="release-note" id="note-790378"> <div class="release-note-content"> <p>If we have the server time, we adjust the "expire" attribute value by adding the delta between the server and the local times. If the current time is set in the future, we consider valid cookies that are not expired for the server.</p> </div> </li> <li class="release-note" id="note-790442"> <div class="release-note-content"> <p>Fixed an issue that started with macOS Sonoma where the emoji picker would open and immediately close when opened with the Cmd+Ctrl+Space shortcut. </p> <p>Thanks to research by Carlos Duarte do Nascimento (Chester) and :bintoro, and a patch by Carlos Duarte do Nascimento (Chester), we have been able to fix this universally for this shortcut and similar shortcuts going forward.</p> </div> </li> <li class="release-note" id="note-790443"> <div class="release-note-content"> <p>Fixed an issue that started with macOS Sonoma where the emoji picker would also insert the character "e" in the selected text field/box when opening the emoji picker using the Fn+e shortcut.</p> <p>We have also fixed this for similar shortcuts using the Fn key.</p> </div> </li> <li class="release-note" id="note-790487"> <div class="release-note-content"> <p>The "Picture-in-Picture: auto-open on tab switch" feature from <a href="https://support.mozilla.org/kb/firefox-labs-explore-experimental-features-firefox">Firefox Labs</a> now behaves more reliably on more sites - auto-opening more videos that you care about, and ignoring ones that you probably don't care about.</p> </div> </li> </ul> </div> </div> <div class="mzp-l-content mzp-has-sidebar mzp-l-sidebar-left"> <div class="mzp-l-sidebar"> <img class="sidebar-icon" alt="" src="https://www.mozilla.org/media/protocol/img/icons/developer.fc7d2d65df74.svg" width="30" height="30"> <h3>Developer</h3> </div> <div class="mzp-l-main mzp-l-article"> <ul> <li class="release-note" id="note-mdn"> <div class="release-note-content"> <a class="mdn-icon" rel="external" href="https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/133">Developer Information</a> </div> </li> </ul> </div> </div> <div class="mzp-l-content mzp-has-sidebar mzp-l-sidebar-left"> <div class="mzp-l-sidebar"> <img class="sidebar-icon" alt="" src="https://www.mozilla.org/media/protocol/img/icons/globe.b1488be03021.svg" width="30" height="30"> <h3>Web Platform</h3> </div> <div class="mzp-l-main mzp-l-article"> <ul> <li class="release-note" id="note-790414"> <div class="release-note-content"> <p>Firefox now supports the <code>keepalive</code> option in the <a href="https://developer.mozilla.org/docs/Web/API/Fetch_API">Fetch API</a>. This feature allows developers to make HTTP requests that can continue to run even after the page is unloaded, such as during page navigation or closing.</p> </div> </li> <li class="release-note" id="note-790425"> <div class="release-note-content"> <p>Firefox now supports <a href="https://developer.mozilla.org/docs/Web/API/Permissions_API">Permissions API</a> in <code>Worker</code> Context.</p> </div> </li> <li class="release-note" id="note-790440"> <div class="release-note-content"> <p>Firefox now dispatches <a href="https://developer.mozilla.org/docs/Web/API/HTMLElement/beforetoggle_event">beforetoggle</a> events just before a dialog opens and <a href="https://developer.mozilla.org/docs/Web/API/HTMLElement/toggle_event">toggle</a> events after the dialog closes, matching the behavior of <a href="https://developer.mozilla.org/docs/Web/HTML/Global_attributes/popover">popovers</a>.</p> </div> </li> <li class="release-note" id="note-790441"> <div class="release-note-content"> <p>Methods are now available on <a href="https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array">UInt8Array</a> to convert to and from Base64 and hexadecimal encodings. This is an implementation of a Stage 3 TC39 proposal, for more details see the <a href="https://github.com/tc39/proposal-arraybuffer-base64">proposal text</a>.</p> </div> </li> <li class="release-note" id="note-790454"> <div class="release-note-content"> <p>Added support for <a href="https://developer.mozilla.org/docs/Web/API/ImageDecoder">image decoding</a> as part of the <a href="https://developer.mozilla.org/docs/Web/API/WebCodecs_API">WebCodecs API</a>. This allows for decoding of images from the main and worker threads.</p> </div> </li> </ul> </div> </div> </section> <section class="mzp-c-callout mzp-l-compact mzp-t-firefox mzp-t-background-secondary t-beta"> <div class="mzp-l-content mzp-t-content-lg"> <div class="mzp-c-callout-content mzp-c-callout-content-has-brand"> <div class="mzp-t-callout-compact-brand mzp-c-logo mzp-t-logo-lg mzp-t-product-beta"></div> <div class="mzp-c-callout-container"> <h2 class="mzp-c-callout-title">Get the most recent version</h2> </div> </div> <div class="mzp-c-callout-cta"> <div class="mzp-c-callout-cta-container"> <div id="download-beta-secondary" class="download-button download-button-beta download-button-desktop mzp-c-button-download-container"> <div class="nojs-download"> <div class="download download-dumb"> <p role="heading" class="download-heading"> Firefox Beta — English (US) </p> <ul> <li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64" data-cta-text="Download Firefox for Windows 64-bit" data-cta-type="firefox">Windows 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-msi" data-cta-text="Download Firefox for Windows 64-bit MSI" data-cta-type="firefox">Windows 64-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=win64-aarch64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-aarch64" data-cta-text="Download Firefox for Windows ARM64/AArch64" data-cta-type="firefox">Windows ARM64/AArch64</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win" data-cta-text="Download Firefox for Windows 32-bit" data-cta-type="firefox">Windows 32-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win-msi" data-cta-text="Download Firefox for Windows 32-bit MSI" data-cta-type="firefox">Windows 32-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=osx&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="osx" data-cta-text="Download Firefox for macOS" data-cta-type="firefox">macOS</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux64" data-cta-text="Download Firefox for Linux 64-bit" data-cta-type="firefox">Linux 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux" data-cta-text="Download Firefox for Linux 32-bit" data-cta-type="firefox">Linux 32-bit</a> </li> </ul> </div> </div> <div class="unrecognized-download" data-nosnippet="true"> <p>Your system may not meet the requirements for Firefox, but you can try one of these versions:</p> <div class="download download-dumb"> <p role="heading" class="download-heading"> Firefox Beta — English (US) </p> <ul> <li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64" data-cta-text="Download Firefox for Windows 64-bit" data-cta-type="firefox">Windows 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-msi" data-cta-text="Download Firefox for Windows 64-bit MSI" data-cta-type="firefox">Windows 64-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=win64-aarch64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win64-aarch64" data-cta-text="Download Firefox for Windows ARM64/AArch64" data-cta-type="firefox">Windows ARM64/AArch64</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-stub&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win" data-cta-text="Download Firefox for Windows 32-bit" data-cta-type="firefox">Windows 32-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="win-msi" data-cta-text="Download Firefox for Windows 32-bit MSI" data-cta-type="firefox">Windows 32-bit MSI</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=osx&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="osx" data-cta-text="Download Firefox for macOS" data-cta-type="firefox">macOS</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux64&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux64" data-cta-text="Download Firefox for Linux 64-bit" data-cta-type="firefox">Linux 64-bit</a> </li><li><a href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=linux&lang=en-US" class="download-link mzp-c-button mzp-t-product ga-product-download" data-download-version="linux" data-cta-text="Download Firefox for Linux 32-bit" data-cta-type="firefox">Linux 32-bit</a> </li> </ul> </div> </div> <div class="fx-unsupported-message win" data-nosnippet="true"> <p><strong>Firefox Beta is <a href="https://support.mozilla.org/kb/firefox-users-windows-7-8-and-81-moving-extended-support">no longer supported</a> on Windows 8.1 and below.</strong></p> <p>Please download Firefox ESR (Extended Support Release) to use Firefox.</p> <div class="download-platform-list"> <p> <a class="mzp-c-button mzp-t-product download-link os_win64 ga-product-download" href="https://download.mozilla.org/?product=firefox-esr115-latest-ssl&os=win64&lang=en-US" data-download-version="win64" data-cta-text="Download Firefox Extended Support Release 64-bit" data-cta-type="firefox"> Download Firefox ESR 64-bit </a> </p> <p> <a class="mzp-c-button mzp-t-product download-link os_win ga-product-download" href="https://download.mozilla.org/?product=firefox-esr115-latest-ssl&os=win&lang=en-US" data-download-version="win" data-cta-text="Download Firefox Extended Support Release 32-bit" data-cta-type="firefox"> Download Firefox ESR 32-bit </a> </p> <small class="fx-unsupported-message-all-link"> <a href="/en-US/firefox/all/desktop-esr/"> Download a different build </a> </small> </div> </div> <div class="fx-unsupported-message mac" data-nosnippet="true"> <p><strong>Firefox Beta is <a href="https://support.mozilla.org/kb/firefox-users-macos-1012-1013-1014-moving-to-extended-support">no longer supported</a> on macOS 10.14 and below.</strong></p> <p>Please download Firefox ESR (Extended Support Release) to use Firefox.</p> <div class="download-platform-list"> <a class="mzp-c-button mzp-t-product download-link ga-product-download" href="https://download.mozilla.org/?product=firefox-esr115-latest-ssl&os=osx&lang=en-US" data-download-version="osx" data-cta-text="Firefox Extended Support Release MacOS" data-cta-type="firefox"> Download Firefox ESR </a> </div> </div> <ul class="download-list"> <li class="os_win64"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-secondary-win64" href="https://download.mozilla.org/?product=firefox-beta-stub&os=win64&lang=en-US" data-download-version="win64" data-cta-text="Download Firefox for Windows 64-bit" data-testid="download-beta-secondary-win64" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win64-msi"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-secondary-win64-msi" href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win64&lang=en-US" data-download-version="win64-msi" data-cta-text="Download Firefox for Windows 64-bit MSI" data-testid="download-beta-secondary-win64-msi" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win64-aarch64"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-secondary-win64-aarch64" href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=win64-aarch64&lang=en-US" data-download-version="win64-aarch64" data-cta-text="Download Firefox for Windows ARM64/AArch64" data-testid="download-beta-secondary-win64-aarch64" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-secondary-win" href="https://download.mozilla.org/?product=firefox-beta-stub&os=win&lang=en-US" data-download-version="win" data-cta-text="Download Firefox for Windows 32-bit" data-testid="download-beta-secondary-win" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_win-msi"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-secondary-win-msi" href="https://download.mozilla.org/?product=firefox-beta-msi-latest-ssl&os=win&lang=en-US" data-download-version="win-msi" data-cta-text="Download Firefox for Windows 32-bit MSI" data-testid="download-beta-secondary-win-msi" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_osx"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-secondary-osx" href="https://download.mozilla.org/?product=firefox-beta-latest-ssl&os=osx&lang=en-US" data-download-version="osx" data-cta-text="Download Firefox for macOS" data-testid="download-beta-secondary-osx" data-cta-type="firefox" > <strong class="download-title"> Download Firefox Beta </strong> </a> </li> <li class="os_linux64"> <a class="download-link button mzp-t-xl mzp-c-button mzp-t-product ga-product-download" id="download-beta-secondary-linux64" 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