Trackers and scripts Firefox blocks in Enhanced Tracking Protection

<!DOCTYPE html> <html class="no-js" lang="en-US" dir="ltr" data-gtm-container-id="G-2VC139B3XV" data-ga-content-group="kb-article" data-ga-default-slug="trackers-and-scripts-firefox-blocks-enhanced-track" data-ga-article-locale="en-US" data-ga-topics="/privacy-and-security/tracking-protection/" data-ga-products="/firefox/" > <head>   <script src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/gtm-snippet.1c0037a49b66fb06.js" nonce="KWx94vaRqj5CWHo44vPbOQ=="></script>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title> Trackers and scripts Firefox blocks in Enhanced Tracking Protection | Firefox Help </title> <link rel="apple-touch-icon" sizes="180x180" href="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/apple-touch-icon.bdc11b610d791a16.png"> <link rel="icon" type="image/png" sizes="32x32" href="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/favicon-32x32.2143cdf0c7e3f377.png"> <link rel="icon" type="image/png" sizes="16x16" href="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/favicon-16x16.352a0a2cef154dda.png"> <link rel="manifest" href="/manifest.json"> <link rel="shortcut icon" href="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/favicon.03d97697df808c0e.ico"> <meta name="theme-color" content="#ffffff"> <link rel="search" type="application/opensearchdescription+xml" title="Mozilla Support" href="/en-US/search/xml"/> <link href="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/screen.7c7f344f96f6c2a7.css" rel="stylesheet" nonce="KWx94vaRqj5CWHo44vPbOQ=="> <script defer="defer" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/620.c017de8a3c1e20cf.js" nonce="KWx94vaRqj5CWHo44vPbOQ=="></script><script defer="defer" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/common.a856f1c1afbd9b67.js" nonce="KWx94vaRqj5CWHo44vPbOQ=="></script> <script defer="defer" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/566.de80f82c1815ff6e.js" nonce="KWx94vaRqj5CWHo44vPbOQ=="></script><script defer="defer" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/467.e805b3b5a73440ca.js" nonce="KWx94vaRqj5CWHo44vPbOQ=="></script><script defer="defer" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/document.58bdb8f917cf5fd3.js" nonce="KWx94vaRqj5CWHo44vPbOQ=="></script> <script defer="defer" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/common.fx.download.6e0d6173cf4fde5d.js" nonce="KWx94vaRqj5CWHo44vPbOQ=="></script> <meta name="description" content="Blocks many common trackers and harmful scripts and reduces the ability of third parties to collect data about your browsing behavior"/> <meta name="google-site-verification" content="2URA-2Y9BeYYUf8B2BSsBSVetJJS3TZwlXBOaMx2VfY" /> <meta name="google-site-verification" content="ueNbCgS4e1JIAgLGwufm-jHaIcLXFLtFMmR_65S1Ag0" /> <meta name="msvalidate.01" content="1659173DC94819093068B0ED7C51C527" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <link rel="canonical" href="https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track" /> </head> <body class="html-ltr logged-out responsive document en-US" data-readonly="false" data-usernames-api="/en-US/users/api/usernames" data-messages-api="/en-US/messages/api/autocomplete" data-media-url="https://assets-prod.sumo.prod.webservices.mozgcp.net/" data-document-id="46068" > <ul class="sumo-nav-access" id="nav-access"> <li><a href="#main-content">Skip to main content</a></li> <li><a href="/en-US/locales">Switch language</a></li> <li><a id="skip-to-search" href="#search-q">Skip to search</a></li> </ul> <div class="media-test"></div> <div id="announcements"> <div id="announce-geoip-suggestion" class="mzp-c-notification-bar mzp-t-warning"> <button class="mzp-c-notification-bar-button close-button" data-close-id="announce-geoip-suggestion" type="button" data-close-memory="remember" data-close-type="remove" > </button> <p></p> </div> </div> <header class="mzp-c-navigation sumo-nav"> <div class="mzp-c-navigation-l-content"> <div class="sumo-nav--container"> <div class="sumo-nav--logo"> <a href="/en-US/"><img src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/mozilla-support.c4f961a8d7b1d501.svg" alt="Mozilla Support Logo"/></a> </div> <button data-mobile-nav-search-button class="sumo-nav--search-button" type="button">Search</button> <button data-sumo-toggle-nav="#main-navigation" class="sumo-nav--toggle-button" type="button" aria-controls="main-navigation">Menu</button> <a class="sumo-nav--avatar-button" data-sumo-toggle-nav="#profile-navigation" aria-controls="profile-navigation" aria-role="button"> <img class="avatar" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/default-FFA-avatar.2f8c2a0592bda1c5.png" alt="Avatar for Username"> </a> <div class="mzp-c-navigation-items sumo-nav--list-wrap" id="main-navigation"> <div class="mzp-c-navigation-menu"> <nav class="mzp-c-menu mzp-is-basic"> <ul class="mzp-c-menu-category-list sumo-nav--list"> <li class="mzp-c-menu-category mzp-has-drop-down mzp-js-expandable"> <a class="mzp-c-menu-title sumo-nav--link" href="/en-US/questions/" aria-haspopup="true" aria-controls="mzp-c-menu-panel-help">Explore Help Articles</a> <div class="mzp-c-menu-panel mzp-has-card" id="mzp-c-menu-panel-help"> <div class="sumo-nav--dropdown-container"> <div class="sumo-nav--dropdown-grid"> <button class="mzp-c-menu-button-close" type="button" aria-controls="mzp-c-menu-panel-example">Close Firefox menu</button> <div class="sumo-nav--dropdown-col"> <section class="mzp-c-menu-item mzp-has-icon sumo-nav--dropdown-item"> <div class="mzp-c-menu-item-head"> <svg class="mzp-c-menu-item-icon" width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <g transform="translate(3 3)" stroke="#000" stroke-width="2" fill="none" fill-rule="evenodd" stroke-linecap="round"> <rect stroke-linejoin="round" width="18" height="18" rx="2" /> <path d="M4 5h10M4 9h10M4 13h4" /> </g> </svg> <h4 class="mzp-c-menu-item-title">Explore by product</h4> </div> <ul class="mzp-c-menu-item-list sumo-nav--sublist"> <li> <a href="/en-US/products/firefox" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.firefox-browser.product-home", "link_detail": "firefox" }'> Firefox desktop </a> </li> <li> <a href="/en-US/products/firefox-private-network-vpn" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.mozilla-vpn.product-home", "link_detail": "firefox-private-network-vpn" }'> Mozilla VPN </a> </li> <li> <a href="/en-US/products/ios" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.firefox-for-ios.product-home", "link_detail": "ios" }'> Firefox for iOS </a> </li> <li> <a href="/en-US/products/thunderbird" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.thunderbird.product-home", "link_detail": "thunderbird" }'> Thunderbird </a> </li> <li> <a href="/en-US/products/mobile" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.firefox-for-android.product-home", "link_detail": "mobile" }'> Firefox for Android </a> </li> <li> <a class="color-link" href="/en-US/products/" data-event-name="link_click" data-event-parameters='{"link_name": "main-menu.browse-all-articles.list-products"}'> View all products </a> </li> </ul> </section> </div> <div class="sumo-nav--dropdown-col"> <section class="mzp-c-menu-item mzp-has-icon sumo-nav--dropdown-item"> <div class="mzp-c-menu-item-head"> <svg class="mzp-c-menu-item-icon" width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <g transform="translate(3 3)" stroke="#000" stroke-width="2" fill="none" fill-rule="evenodd" stroke-linecap="round"> <rect stroke-linejoin="round" width="18" height="18" rx="2" /> <path d="M4 5h10M4 9h10M4 13h4" /> </g> </svg> <h4 class="mzp-c-menu-item-title">Explore by topic</h4> </div> <ul class="mzp-c-menu-item-list sumo-nav--sublist"> <li> <a href="/en-US/topics/settings" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.topic-home", "link_detail": "settings" }'> Settings </a> </li> <li> <a href="/en-US/topics/installation-and-updates" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.topic-home", "link_detail": "installation-and-updates" }'> Installation and updates </a> </li> <li> <a href="/en-US/topics/email-and-messaging" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.topic-home", "link_detail": "email-and-messaging" }'> Email and messaging </a> </li> <li> <a href="/en-US/topics/performance-and-connectivity" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.topic-home", "link_detail": "performance-and-connectivity" }'> Performance and connectivity </a> </li> <li> <a href="/en-US/topics/privacy-and-security" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.topic-home", "link_detail": "privacy-and-security" }'> Privacy and security </a> </li> <li> <a href="/en-US/topics/browse" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.topic-home", "link_detail": "browse" }'> Browse </a> </li> </ul> </section> </div> </div> </div> </div> </li> <li class="mzp-c-menu-category mzp-has-drop-down mzp-js-expandable"> <a class="mzp-c-menu-title sumo-nav--link" href="#" aria-haspopup="true" aria-controls="mzp-c-menu-panel-tools">Community Forums</a> <div class="mzp-c-menu-panel mzp-has-card" id="mzp-c-menu-panel-tools"> <div class="sumo-nav--dropdown-container"> <div class="sumo-nav--dropdown-grid"> <button class="mzp-c-menu-button-close" type="button" aria-controls="mzp-c-menu-panel-example">Close Firefox menu</button> <div class="sumo-nav--dropdown-col"> <section class="mzp-c-menu-item mzp-has-icon sumo-nav--dropdown-item"> <div class="mzp-c-menu-item-head"> <svg class="mzp-c-menu-item-icon" width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <g stroke="#000" stroke-width="2" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> <path d="M17 17l-1.051 3.154a1 1 0 01-1.898 0L13 17H5a2 2 0 01-2-2V5a2 2 0 012-2h14a2 2 0 012 2v10a2 2 0 01-2 2h-2zM7 8h10M7 12h10" /> </g> </svg> <h4 class="mzp-c-menu-item-title">Browse by product</h4> </div> <ul class="mzp-c-menu-item-list sumo-nav--sublist"> <li> <a href="/en-US/questions/firefox" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "desktop" }'> Firefox desktop </a> </li> <li> <a href="/en-US/questions/focus-firefox" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "focus" }'> Firefox Focus </a> </li> <li> <a href="/en-US/questions/ios" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "ios" }'> Firefox for iOS </a> </li> <li> <a href="/en-US/questions/thunderbird" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "thunderbird" }'> Thunderbird </a> </li> <li> <a href="/en-US/questions/mobile" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "mobile" }'> Firefox for Android </a> </li> <li> <a class="color-link" href="/en-US/questions/" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "view-all-home" }'> View all forums </a> </li> </ul> </section> </div> <div class="sumo-nav--dropdown-col"> <section class="mzp-c-menu-item mzp-has-icon sumo-nav--dropdown-item"> <div class="mzp-c-menu-item-head"> <svg class="mzp-c-menu-item-icon" width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <path d="M10.5 9.5L3 17c-1 1.667-1 3 0 4s2.333.833 4-.5l7.5-7.5c2.333 1.054 4.333.734 6-.96 1.667-1.693 1.833-3.707.5-6.04l-3 3-2.5-.5L15 6l3-3c-2.333-1.333-4.333-1.167-6 .5-1.667 1.667-2.167 3.667-1.5 6z" stroke="#000" stroke-width="2" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round" /> </svg> <h4 class="mzp-c-menu-item-title">Browse all forum threads by topic</h4> </div> <ul class="mzp-c-menu-item-list sumo-nav--sublist"> <li> <a href="/en-US/questions/topic/settings" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "settings" }'> Settings </a> </li> <li> <a href="/en-US/questions/topic/installation-and-updates" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "installation-and-updates" }'> Installation and updates </a> </li> <li> <a href="/en-US/questions/topic/email-and-messaging" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "email-and-messaging" }'> Email and messaging </a> </li> <li> <a href="/en-US/questions/topic/performance-and-connectivity" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "performance-and-connectivity" }'> Performance and connectivity </a> </li> <li> <a href="/en-US/questions/topic/privacy-and-security" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "privacy-and-security" }'> Privacy and security </a> </li> <li> <a href="/en-US/questions/topic/browse" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.support-forum-home", "link_detail": "browse" }'> Browse </a> </li> </ul> </section> </div> </div> </div> </div> </li> <li class="mzp-c-menu-category mzp-has-drop-down mzp-js-expandable"> <a class="mzp-c-menu-title sumo-nav--link" href="/en-US/questions/" aria-haspopup="true" aria-controls="mzp-c-menu-panel-help">Ask a Question</a> <div class="mzp-c-menu-panel mzp-has-card" id="mzp-c-menu-panel-help"> <div class="sumo-nav--dropdown-container"> <div class="sumo-nav--dropdown-grid"> <button class="mzp-c-menu-button-close" type="button" aria-controls="mzp-c-menu-panel-example">Close Firefox menu </button> <div class="sumo-nav--dropdown"> <section class="mzp-c-menu-item mzp-has-icon sumo-nav--dropdown-item"> <div class="mzp-c-menu-item-head"> <svg class="mzp-c-menu-item-icon" width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <g stroke="#000" stroke-width="2" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> <path d="M11 3H4a2 2 0 00-2 2v12a2 2 0 002 2h9l2 4 2-4h2a2 2 0 002-2v-6" /> <path d="M17.5 2.5a2.121 2.121 0 013 3L13 13l-4 1 1-4 7.5-7.5z" /> </g> </svg> <h4 class="mzp-c-menu-item-title">Get help with</h4> </div> <ul class="mzp-c-menu-item-list sumo-nav--sublist-aaq"> <li> <a href="/en-US/questions/new/desktop" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "desktop" }'> Firefox desktop </a> </li> <li> <a href="/en-US/questions/new/firefox-enterprise" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "firefox-enterprise" }'> Firefox for Enterprise </a> </li> <li> <a href="/en-US/questions/new/relay" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "relay" }'> Firefox Relay </a> </li> <li> <a href="/en-US/questions/new/thunderbird" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "thunderbird" }'> Thunderbird </a> </li> <li> <a href="/en-US/questions/new/ios" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "ios" }'> Firefox for iOS </a> </li> <li> <a href="/en-US/questions/new/focus" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "focus" }'> Firefox Focus </a> </li> <li> <a href="/en-US/questions/new/monitor" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "monitor" }'> Monitor </a> </li> <li> <a href="/en-US/questions/new/mozilla-account" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "mozilla-account" }'> Mozilla Account </a> </li> <li> <a href="/en-US/questions/new/mobile" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "mobile" }'> Firefox for Android </a> </li> <li> <a href="/en-US/questions/new/firefox-private-network-vpn" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "firefox-private-network-vpn" }'> Mozilla VPN </a> </li> <li> <a href="/en-US/questions/new/pocket" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-2", "link_detail": "pocket" }'> Pocket </a> </li> <li> <a class="color-link" href="/en-US/questions/new" data-event-name="link_click" data-event-parameters='{ "link_name": "main-menu.aaq-step-1", "link_detail": "view-all" }'> View all </a> </li> </ul> </section> </div> </div> </div> </div> </li> <li class="mzp-c-menu-category"> <a class="mzp-c-menu-title sumo-nav--link" href="/en-US/contribute" data-event-name="link_click" data-event-parameters='{"link_name": "main-menu.contribute.contribute-home"}'> Contribute </a> </li> </ul> </nav> </div> </div> <div class="mzp-c-navigation-items sumo-nav--list-wrap-right logged-out" id="profile-navigation"> <div class="mzp-c-navigation-menu"> <nav class="mzp-c-menu mzp-is-basic"> <ul class="mzp-c-menu-category-list sumo-nav--list"> <li class="mzp-c-menu-category sumo-nav--item-right"> <form data-instant-search="form" id="support-search" action="/en-US/search/" method="get" class="simple-search-form"> <input type="hidden" name="product" value="firefox" /> <input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Search questions, articles, or topics (example: saving passwords in Firefox)" class="searchbox" id="search-q" /> <button type="submit" title="Search" class="search-button">Search</button> </form> </li> <li class="mzp-c-menu-category logged-out-button-row "> <a rel="nofollow" href="/en-US/users/auth" class="sumo-button secondary-button button-lg" data-event-name="link_click" data-event-parameters='{"link_name": "main-menu.sign-in-up"}'> Sign In/Up </a> </li> </ul> </nav> </div> </div> <div class="mzp-c-navigation-items sumo-nav--mobile-search-form" id="search-navigation"> <div class="mzp-c-navigation-menu"> <nav class="mzp-c-menu mzp-is-basic"> <form data-instant-search="form" id="mobile-search-results" action="/en-US/search/" method="get" class="simple-search-form"> <input type="hidden" name="product" value="firefox" /> <input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Search questions, articles, or topics (example: saving passwords in Firefox)" class="searchbox" id="search-q" /> <button type="submit" title="Search" class="search-button">Search</button> </form> </nav> </div> </div> </div> </div> </header>  <div class="home-search-section sumo-page-section--lg shade-bg hidden-search-masthead"> <div class="mzp-l-content narrow"> <div class="home-search-section--content"> <h4 class="sumo-page-heading-xl">Search Support</h4> <form data-instant-search="form" id="hidden-search" action="/en-US/search/" method="get" class="simple-search-form"> <input type="hidden" name="product" value="firefox" /> <input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Search questions, articles, or topics (example: saving passwords in Firefox)" class="searchbox" id="search-q" /> <button type="submit" title="Search" class="search-button">Search</button> </form> </div> </div> </div> <div class="mzp-l-content " id="main-content"> <div class="sumo-page-section--inner"> <div class="breadcrumbs" id="main-breadcrumbs"> <ol id="breadcrumbs" class="breadcrumbs--list"> <li><a href="/en-US/">Home</a></li> <li><a href="/en-US/products/firefox">Firefox</a></li> <li><a href="/en-US/products/firefox/privacy-and-security">Privacy and security</a></li> <li>Trackers and scripts Firefox blocks...</li> </ol> </div> <div class="sumo-l-two-col "> <aside id="aside" class="sumo-l-two-col--sidebar"> <div class="search-form-sidebar large-only"> <form data-instant-search="form" id="support-search-sidebar" action="/en-US/search/" method="get" class="simple-search-form"> <input type="hidden" name="product" value="firefox" /> <input spellcheck="true" type="search" autocomplete="off" name="q" aria-required="true" placeholder="Search questions, articles, or topics (example: saving passwords in Firefox)" class="searchbox" id="search-q" /> <button type="submit" title="Search" class="search-button">Search</button> </form> </div> <div class="aaq-widget card is-inverse elevation-01 text-center radius-md"> <h2 class="card--title has-bottom-margin"> <svg class="card--icon-sm" width="24px" height="24px" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"> <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> <g transform="translate(2.000000, 1.878680)" stroke="#FFFFFF" stroke-width="2"> <path d="M9,1.12132031 L2,1.12132031 C0.8954305,1.12132031 5.32907052e-15,2.01675081 5.32907052e-15,3.12132031 L5.32907052e-15,15.1213203 C5.32907052e-15,16.2258898 0.8954305,17.1213203 2,17.1213203 L11,17.1213203 L13,21.1213203 L15,17.1213203 L17,17.1213203 C18.1045695,17.1213203 19,16.2258898 19,15.1213203 L19,9.12132031"></path> <path d="M15.5,0.621320312 C16.3284271,-0.207106783 17.6715729,-0.207106769 18.5,0.621320344 C19.3284271,1.44974746 19.3284271,2.79289318 18.5,3.62132031 L11,11.1213203 L7,12.1213203 L8,8.12132031 L15.5,0.621320312 Z"></path> </g> </g> </svg> Ask a Question </h2> <p>Still need help? Continue to ask your question and get help.</p> <a class="sumo-button primary-button feature-box" href="/en-US/kb/get-community-support?exit_aaq=1" data-event-name="link_click" data-event-parameters='{ "link_name": "aaq-widget.community-support.kb-article", "link_detail": "None" }'> Continue </a> </div> <nav id="doc-tools"> <ul class="sidebar-nav sidebar-folding"> <li id="editing-tools-sidebar"> <span class="details-heading"></span> <ul class="sidebar-nav--list"> <li> <section class="showfor" id="showfor-panel"> <script type="application/json" class="showfor-data"> {"products": [{"title": "Firefox", "slug": "firefox", "platforms": ["win8", "win7", "winxp", "mac", "linux", "win10", "win11"], "visible": true}], "versions": {"firefox": [{"name": "Version 134", "slug": "fx134", "product": "firefox", "default": false, "min_version": 134.0, "max_version": 135.0, "visible": true}, {"name": "Version 133", "slug": "fx133", "product": "firefox", "default": false, "min_version": 133.0, "max_version": 134.0, "visible": true}, {"name": "Version 132", "slug": "fx132", "product": "firefox", "default": true, "min_version": 132.0, "max_version": 133.0, "visible": true}, {"name": "Version 131", "slug": "fx131", "product": "firefox", "default": false, "min_version": 131.0, "max_version": 132.0, "visible": true}, {"name": "Version 130", "slug": "fx130", "product": "firefox", "default": false, "min_version": 130.0, "max_version": 131.0, "visible": true}, {"name": "Version 129", "slug": "fx129", "product": "firefox", "default": false, "min_version": 129.0, "max_version": 130.0, "visible": true}, {"name": "Version 128", "slug": "fx128", "product": "firefox", "default": false, "min_version": 128.0, "max_version": 129.0, "visible": true}, {"name": "Version 127", "slug": "fx127", "product": "firefox", "default": false, "min_version": 127.0, "max_version": 128.0, "visible": true}, {"name": "Version 126", "slug": "fx126", "product": "firefox", "default": false, "min_version": 126.0, "max_version": 127.0, "visible": true}, {"name": "Version 125", "slug": "fx125", "product": "firefox", "default": false, "min_version": 125.0, "max_version": 126.0, "visible": true}, {"name": "Version 124", "slug": "fx124", "product": "firefox", "default": false, "min_version": 124.0, "max_version": 125.0, "visible": true}, {"name": "Version 123", "slug": "fx123", "product": "firefox", "default": false, "min_version": 123.0, "max_version": 124.0, "visible": true}, {"name": "Version 122", "slug": "fx122", "product": "firefox", "default": false, "min_version": 122.0, "max_version": 123.0, "visible": true}, {"name": "Version 121", "slug": "fx121", "product": "firefox", "default": false, "min_version": 121.0, "max_version": 122.0, "visible": true}, {"name": "Version 120", "slug": "fx120", "product": "firefox", "default": false, "min_version": 120.0, "max_version": 121.0, "visible": true}, {"name": "Version 119", "slug": "fx119", "product": "firefox", "default": false, "min_version": 119.0, "max_version": 120.0, "visible": true}, {"name": "Version 118", "slug": "fx118", "product": "firefox", "default": false, "min_version": 118.0, "max_version": 119.0, "visible": true}, {"name": "Version 117", "slug": "fx117", "product": "firefox", "default": false, "min_version": 117.0, "max_version": 118.0, "visible": true}, {"name": "Version 116", "slug": "fx116", "product": "firefox", "default": false, "min_version": 116.0, "max_version": 117.0, "visible": true}, {"name": "Version 115", "slug": "fx115", "product": "firefox", "default": false, "min_version": 115.0, "max_version": 116.0, "visible": true}, {"name": "Version 114", "slug": "fx114", "product": "firefox", "default": false, "min_version": 114.0, "max_version": 115.0, "visible": false}, {"name": "Version 113", "slug": "fx113", "product": "firefox", "default": false, "min_version": 113.0, "max_version": 114.0, "visible": false}, {"name": "Version 112", "slug": "fx112", "product": "firefox", "default": false, "min_version": 112.0, "max_version": 113.0, "visible": false}, {"name": "Version 111", "slug": "fx111", "product": "firefox", "default": false, "min_version": 111.0, "max_version": 112.0, "visible": false}, {"name": "Version 110", "slug": "fx110", "product": "firefox", "default": false, "min_version": 110.0, "max_version": 111.0, "visible": false}, {"name": "Version 109", "slug": "fx109", "product": "firefox", "default": false, "min_version": 109.0, "max_version": 110.0, "visible": false}, {"name": "Version 108", "slug": "fx108", "product": "firefox", "default": false, "min_version": 108.0, "max_version": 109.0, "visible": false}, {"name": "Version 107", "slug": "fx107", "product": "firefox", "default": false, "min_version": 107.0, "max_version": 108.0, "visible": false}, {"name": "Version 106", "slug": "fx106", "product": "firefox", "default": false, "min_version": 106.0, "max_version": 107.0, "visible": false}, {"name": "Version 105", "slug": "fx105", "product": "firefox", "default": false, "min_version": 105.0, "max_version": 106.0, "visible": false}, {"name": "Version 104", "slug": "fx104", "product": "firefox", "default": false, "min_version": 104.0, "max_version": 105.0, "visible": false}, {"name": "Version 103", "slug": "fx103", "product": "firefox", "default": false, "min_version": 103.0, "max_version": 104.0, "visible": false}, {"name": "Version 102", "slug": "fx102", "product": "firefox", "default": false, "min_version": 102.0, "max_version": 103.0, "visible": false}, {"name": "Version 101", "slug": "fx101", "product": "firefox", "default": false, "min_version": 101.0, "max_version": 102.0, "visible": false}, {"name": "Version 100", "slug": "fx100", "product": "firefox", "default": false, "min_version": 100.0, "max_version": 101.0, "visible": false}, {"name": "Version 99", "slug": "fx99", "product": "firefox", "default": false, "min_version": 99.0, "max_version": 100.0, "visible": false}, {"name": "Version 98", "slug": "fx98", "product": "firefox", "default": false, "min_version": 98.0, "max_version": 99.0, "visible": false}, {"name": "Version 97", "slug": "fx97", "product": "firefox", "default": false, "min_version": 97.0, "max_version": 98.0, "visible": false}, {"name": "Version 96", "slug": "fx96", "product": "firefox", "default": false, "min_version": 96.0, "max_version": 97.0, "visible": false}, {"name": "Version 95", "slug": "fx95", "product": "firefox", "default": false, "min_version": 95.0, "max_version": 96.0, "visible": false}, {"name": "Version 94", "slug": "fx94", "product": "firefox", "default": false, "min_version": 94.0, "max_version": 95.0, "visible": false}, {"name": "Version 93", "slug": "fx93", "product": "firefox", "default": false, "min_version": 93.0, "max_version": 94.0, "visible": false}, {"name": "Version 92", "slug": "fx92", "product": "firefox", "default": false, "min_version": 92.0, "max_version": 93.0, "visible": false}, {"name": "Version 91", "slug": "fx91", "product": "firefox", "default": false, "min_version": 91.0, "max_version": 92.0, "visible": false}, {"name": "Version 90", "slug": "fx90", "product": "firefox", "default": false, "min_version": 90.0, "max_version": 91.0, "visible": false}, {"name": "Version 89", "slug": "fx89", "product": "firefox", "default": false, "min_version": 89.0, "max_version": 90.0, "visible": false}, {"name": "Version 88", "slug": "fx88", "product": "firefox", "default": false, "min_version": 88.0, "max_version": 89.0, "visible": false}, {"name": "Version 87", "slug": "fx87", "product": "firefox", "default": false, "min_version": 87.0, "max_version": 88.0, "visible": false}, {"name": "Version 86", "slug": "fx86", "product": "firefox", "default": false, "min_version": 86.0, "max_version": 87.0, "visible": false}, {"name": "Version 85", "slug": "fx85", "product": "firefox", "default": false, "min_version": 85.0, "max_version": 86.0, "visible": false}, {"name": "Version 84", "slug": "fx84", "product": "firefox", "default": false, "min_version": 84.0, "max_version": 85.0, "visible": false}, {"name": "Version 83", "slug": "fx83", "product": "firefox", "default": false, "min_version": 83.0, "max_version": 84.0, "visible": false}, {"name": "Version 82", "slug": "fx82", "product": "firefox", "default": false, "min_version": 82.0, "max_version": 83.0, "visible": false}, {"name": "Version 81", "slug": "fx81", "product": "firefox", "default": false, "min_version": 81.0, "max_version": 82.0, "visible": false}, {"name": "Version 80", "slug": "fx80", "product": "firefox", "default": false, "min_version": 80.0, "max_version": 81.0, "visible": false}, {"name": "Version 79", "slug": "fx79", "product": "firefox", "default": false, "min_version": 79.0, "max_version": 80.0, "visible": false}, {"name": "Version 78", "slug": "fx78", "product": "firefox", "default": false, "min_version": 78.0, "max_version": 79.0, "visible": false}, {"name": "Version 77", "slug": "fx77", "product": "firefox", "default": false, "min_version": 77.0, "max_version": 78.0, "visible": false}, {"name": "Version 76", "slug": "fx76", "product": "firefox", "default": false, "min_version": 76.0, "max_version": 77.0, "visible": false}, {"name": "Version 75", "slug": "fx75", "product": "firefox", "default": false, "min_version": 75.0, "max_version": 76.0, "visible": false}, {"name": "Version 74", "slug": "fx74", "product": "firefox", "default": false, "min_version": 74.0, "max_version": 75.0, "visible": false}, {"name": "Version 73", "slug": "fx73", "product": "firefox", "default": false, "min_version": 73.0, "max_version": 74.0, "visible": false}, {"name": "Version 72", "slug": "fx72", "product": "firefox", "default": false, "min_version": 72.0, "max_version": 73.0, "visible": false}, {"name": "Version 71", "slug": "fx71", "product": "firefox", "default": false, "min_version": 71.0, "max_version": 72.0, "visible": false}, {"name": "Version 70", "slug": "fx70", "product": "firefox", "default": false, "min_version": 70.0, "max_version": 71.0, "visible": false}, {"name": "Version 69", "slug": "fx69", "product": "firefox", "default": false, "min_version": 69.0, "max_version": 70.0, "visible": false}, {"name": "Version 68", "slug": "fx68", "product": "firefox", "default": false, "min_version": 68.0, "max_version": 69.0, "visible": false}, {"name": "Version 67", "slug": "fx67", "product": "firefox", "default": false, "min_version": 67.0, "max_version": 68.0, "visible": false}, {"name": "Version 66", "slug": "fx66", "product": "firefox", "default": false, "min_version": 66.0, "max_version": 67.0, "visible": false}, {"name": "Version 65", "slug": "fx65", "product": "firefox", "default": false, "min_version": 65.0, "max_version": 66.0, "visible": false}, {"name": "Version 64", "slug": "fx64", "product": "firefox", "default": false, "min_version": 64.0, "max_version": 65.0, "visible": false}, {"name": "Version 63", "slug": "fx63", "product": "firefox", "default": false, "min_version": 63.0, "max_version": 64.0, "visible": false}, {"name": "Version 62", "slug": "fx62", "product": "firefox", "default": false, "min_version": 62.0, "max_version": 63.0, "visible": false}, {"name": "Version 61", "slug": "fx61", "product": "firefox", "default": false, "min_version": 61.0, "max_version": 62.0, "visible": false}, {"name": "Version 60", "slug": "fx60", "product": "firefox", "default": false, "min_version": 60.0, "max_version": 61.0, "visible": false}, {"name": "Version 59", "slug": "fx59", "product": "firefox", "default": false, "min_version": 59.0, "max_version": 60.0, "visible": false}, {"name": "Version 58", "slug": "fx58", "product": "firefox", "default": false, "min_version": 58.0, "max_version": 59.0, "visible": false}, {"name": "Version 57", "slug": "fx57", "product": "firefox", "default": false, "min_version": 57.0, "max_version": 58.0, "visible": false}, {"name": "Version 56", "slug": "fx56", "product": "firefox", "default": false, "min_version": 56.0, "max_version": 57.0, "visible": false}, {"name": "Version 55", "slug": "fx55", "product": "firefox", "default": false, "min_version": 55.0, "max_version": 56.0, "visible": false}, {"name": "Version 54", "slug": "fx54", "product": "firefox", "default": false, "min_version": 54.0, "max_version": 55.0, "visible": false}, {"name": "Version 53", "slug": "fx53", "product": "firefox", "default": false, "min_version": 53.0, "max_version": 54.0, "visible": false}, {"name": "Version 52", "slug": "fx52", "product": "firefox", "default": false, "min_version": 52.0, "max_version": 53.0, "visible": false}, {"name": "Version 51", "slug": "fx51", "product": "firefox", "default": false, "min_version": 51.0, "max_version": 52.0, "visible": false}, {"name": "Version 50", "slug": "fx50", "product": "firefox", "default": false, "min_version": 50.0, "max_version": 51.0, "visible": false}, {"name": "Version 49", "slug": "fx49", "product": "firefox", "default": false, "min_version": 49.0, "max_version": 50.0, "visible": false}, {"name": "Version 48", "slug": "fx48", "product": "firefox", "default": false, "min_version": 48.0, "max_version": 49.0, "visible": false}, {"name": "Version 47", "slug": "fx47", "product": "firefox", "default": false, "min_version": 47.0, "max_version": 48.0, "visible": false}, {"name": "Version 46", "slug": "fx46", "product": "firefox", "default": false, "min_version": 46.0, "max_version": 47.0, "visible": false}, {"name": "Version 45", "slug": "fx45", "product": "firefox", "default": false, "min_version": 45.0, "max_version": 46.0, "visible": false}, {"name": "Version 44", "slug": "fx44", "product": "firefox", "default": false, "min_version": 44.0, "max_version": 45.0, "visible": false}, {"name": "Version 43", "slug": "fx43", "product": "firefox", "default": false, "min_version": 43.0, "max_version": 44.0, "visible": false}, {"name": "Version 42", "slug": "fx42", "product": "firefox", "default": false, "min_version": 42.0, "max_version": 43.0, "visible": false}, {"name": "Version 41", "slug": "fx41", "product": "firefox", "default": false, "min_version": 41.0, "max_version": 42.0, "visible": false}, {"name": "Version 40", "slug": "fx40", "product": "firefox", "default": false, "min_version": 40.0, "max_version": 41.0, "visible": false}, {"name": "Version 39", "slug": "fx39", "product": "firefox", "default": false, "min_version": 39.0, "max_version": 40.0, "visible": false}, {"name": "Version 38", "slug": "fx38", "product": "firefox", "default": false, "min_version": 38.0, "max_version": 39.0, "visible": false}, {"name": "Version 37", "slug": "fx37", "product": "firefox", "default": false, "min_version": 37.0, "max_version": 38.0, "visible": false}, {"name": "Version 36", "slug": "fx36", "product": "firefox", "default": false, "min_version": 36.0, "max_version": 37.0, "visible": false}, {"name": "Version 35", "slug": "fx35", "product": "firefox", "default": false, "min_version": 35.0, "max_version": 36.0, "visible": false}, {"name": "Version 34", "slug": "fx34", "product": "firefox", "default": false, "min_version": 34.0, "max_version": 35.0, "visible": false}, {"name": "Version 33", "slug": "fx33", "product": "firefox", "default": false, "min_version": 33.0, "max_version": 34.0, "visible": false}, {"name": "Version 32", "slug": "fx32", "product": "firefox", "default": false, "min_version": 32.0, "max_version": 33.0, "visible": false}, {"name": "Version 31", "slug": "fx31", "product": "firefox", "default": false, "min_version": 31.0, "max_version": 32.0, "visible": false}, {"name": "Version 30", "slug": "fx30", "product": "firefox", "default": false, "min_version": 30.0, "max_version": 31.0, "visible": false}, {"name": "Version 29", "slug": "fx29", "product": "firefox", "default": false, "min_version": 29.0, "max_version": 30.0, "visible": false}, {"name": "Version 28", "slug": "fx28", "product": "firefox", "default": false, "min_version": 28.0, "max_version": 29.0, "visible": false}, {"name": "Version 27", "slug": "fx27", "product": "firefox", "default": false, "min_version": 27.0, "max_version": 28.0, "visible": false}, {"name": "Version 26", "slug": "fx26", "product": "firefox", "default": false, "min_version": 26.0, "max_version": 27.0, "visible": false}, {"name": "Version 25", "slug": "fx25", "product": "firefox", "default": false, "min_version": 25.0, "max_version": 26.0, "visible": false}, {"name": "Version 24 ESR", "slug": "fx24", "product": "firefox", "default": false, "min_version": 24.0, "max_version": 25.0, "visible": false}, {"name": "Version 24", "slug": "fx24", "product": "firefox", "default": false, "min_version": 24.0, "max_version": 25.0, "visible": false}, {"name": "Version 23", "slug": "fx23", "product": "firefox", "default": false, "min_version": 23.0, "max_version": 24.0, "visible": false}, {"name": "Version 22", "slug": "fx22", "product": "firefox", "default": false, "min_version": 22.0, "max_version": 23.0, "visible": false}, {"name": "Version 21", "slug": "fx21", "product": "firefox", "default": false, "min_version": 21.0, "max_version": 22.0, "visible": false}, {"name": "Version 20", "slug": "fx20", "product": "firefox", "default": false, "min_version": 20.0, "max_version": 21.0, "visible": false}, {"name": "Version 19", "slug": "fx19", "product": "firefox", "default": false, "min_version": 19.0, "max_version": 20.0, "visible": false}, {"name": "Version 18", "slug": "fx18", "product": "firefox", "default": false, "min_version": 18.0, "max_version": 19.0, "visible": false}, {"name": "Version 17 (ESR)", "slug": "fx17", "product": "firefox", "default": false, "min_version": 17.0, "max_version": 18.0, "visible": false}, {"name": "Version 16", "slug": "fx16", "product": "firefox", "default": false, "min_version": 16.0, "max_version": 17.0, "visible": false}, {"name": "Version 15", "slug": "fx15", "product": "firefox", "default": false, "min_version": 15.0, "max_version": 16.0, "visible": false}, {"name": "Version 14", "slug": "fx14", "product": "firefox", "default": false, "min_version": 14.0, "max_version": 15.0, "visible": false}, {"name": "Version 13", "slug": "fx13", "product": "firefox", "default": false, "min_version": 13.0, "max_version": 14.0, "visible": false}, {"name": "Version 12", "slug": "fx12", "product": "firefox", "default": false, "min_version": 12.0, "max_version": 13.0, "visible": false}, {"name": "Version 11", "slug": "fx11", "product": "firefox", "default": false, "min_version": 11.0, "max_version": 12.0, "visible": false}, {"name": "Version 10 (ESR)", "slug": "fx10", "product": "firefox", "default": false, "min_version": 10.0, "max_version": 11.0, "visible": false}, {"name": "Version 9", "slug": "fx9", "product": "firefox", "default": false, "min_version": 9.0, "max_version": 10.0, "visible": false}, {"name": "Version 8", "slug": "fx8", "product": "firefox", "default": false, "min_version": 8.0, "max_version": 9.0, "visible": false}, {"name": "Version 7", "slug": "fx7", "product": "firefox", "default": false, "min_version": 7.0, "max_version": 8.0, "visible": false}, {"name": "Version 6", "slug": "fx6", "product": "firefox", "default": false, "min_version": 6.0, "max_version": 7.0, "visible": false}, {"name": "Version 5", "slug": "fx5", "product": "firefox", "default": false, "min_version": 5.0, "max_version": 6.0, "visible": false}, {"name": "Version 4", "slug": "fx4", "product": "firefox", "default": false, "min_version": 4.0, "max_version": 5.0, "visible": false}, {"name": "Version 117", "slug": "fx117", "product": "firefox", "default": false, "min_version": -1.0, "max_version": 1.0, "visible": false}]}, "platforms": {"firefox": [{"name": "Linux", "slug": "linux", "visible": true}, {"name": "Mac", "slug": "mac", "visible": true}, {"name": "Windows XP", "slug": "winxp", "visible": true}, {"name": "Windows 7/Vista", "slug": "win7", "visible": true}, {"name": "Windows 8", "slug": "win8", "visible": true}, {"name": "Windows 10", "slug": "win10", "visible": true}, {"name": "Windows 11", "slug": "win11", "visible": true}]}} </script> <h3 class="sidebar-subheading force-top-margin">Customize this article</h3> <div class="product" data-product="firefox"> <div class="field checkbox is-condensed"> <input type="checkbox" id="id_firefox" checked value="product:firefox" /> <label for="id_firefox">Firefox</label> </div> <div class="selectbox-wrapper"> <select class="version"> <option value="version:fx134" data-min="134.0" data-max="135.0" > Version 134 </option> <option value="version:fx133" data-min="133.0" data-max="134.0" > Version 133 </option> <option value="version:fx132" data-min="132.0" data-max="133.0" selected> Version 132 </option> <option value="version:fx131" data-min="131.0" data-max="132.0" > Version 131 </option> <option value="version:fx130" data-min="130.0" data-max="131.0" > Version 130 </option> <option value="version:fx129" data-min="129.0" data-max="130.0" > Version 129 </option> <option value="version:fx128" data-min="128.0" data-max="129.0" > Version 128 </option> <option value="version:fx127" data-min="127.0" data-max="128.0" > Version 127 </option> <option value="version:fx126" data-min="126.0" data-max="127.0" > Version 126 </option> <option value="version:fx125" data-min="125.0" data-max="126.0" > Version 125 </option> <option value="version:fx124" data-min="124.0" data-max="125.0" > Version 124 </option> <option value="version:fx123" data-min="123.0" data-max="124.0" > Version 123 </option> <option value="version:fx122" data-min="122.0" data-max="123.0" > Version 122 </option> <option value="version:fx121" data-min="121.0" data-max="122.0" > Version 121 </option> <option value="version:fx120" data-min="120.0" data-max="121.0" > Version 120 </option> <option value="version:fx119" data-min="119.0" data-max="120.0" > Version 119 </option> <option value="version:fx118" data-min="118.0" data-max="119.0" > Version 118 </option> <option value="version:fx117" data-min="117.0" data-max="118.0" > Version 117 </option> <option value="version:fx116" data-min="116.0" data-max="117.0" > Version 116 </option> <option value="version:fx115" data-min="115.0" data-max="116.0" > Version 115 </option> </select> </div> <div class="selectbox-wrapper"> <select class="platform"> <option value="platform:win8" > Windows 8 </option> <option value="platform:win7" > Windows 7/Vista </option> <option value="platform:winxp" > Windows XP </option> <option value="platform:mac" > Mac </option> <option value="platform:linux" > Linux </option> <option value="platform:win10" > Windows 10 </option> <option value="platform:win11" > Windows 11 </option> </select> </div> </div> </section> </li> </ul> </li> </ul> </nav> <div class="document-vote--sidebar-wrap"> <div class="document-vote elevation-01 text-center"> <form class="document-vote--form helpful" action="/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track/vote" method="post"> <input type='hidden' name='csrfmiddlewaretoken' value='jphFa2Kzhd0LPso49aHwIjtSui3kypbbxX0gQTFCwUcACxmKIupDpD1SJNG9acNm' /> <h4 class="document-vote--heading">Was this article helpful?</h4> <div class="document-vote--buttons"> <input type="hidden" name="revision_id" value="287744" /> <input type="hidden" name="source" value="footer" /> <button type="submit" class="btn helpful-button" name="helpful"><span class="hidden-text">Yes</span>👍</button> <button type="submit" class="btn not-helpful-button" name="not-helpful"><span class="hidden-text">No</span>👎</button> <img class="wait" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/spinner.18d6c26adc937688.gif" alt="Please wait..." /> </div> </form> </div> </div> </aside> <main role="main" class="sumo-l-two-col--main"> <section id="document-list"> <header class="sumo-article-header kb-header"> <div class="sumo-article-header--text"> <div class="documents-product-title"> <a href="/en-US/products/firefox" title="Firefox"> <img src="https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/products/2020-04-14-08-36-13-8dda6f.png" height="48" width="48" alt="" /> </a> <div class="firefox-download-button hidden"> <div class="download-buttons"> <div class="download-firefox"> <a href="https://www.mozilla.org/firefox/new/?utm_source=support.mozilla.org&utm_medium=referral&utm_campaign=non-fx-button&utm_content=body-download-button" class="download-button sumo-button primary-button button-lg"> Download Firefox </a> <ul class="download-info text-body-xs"> <li><a href="https://www.mozilla.org/firefox/all/">Systems and Languages</a></li> <li><a href="https://www.mozilla.org/firefox/notes">What's New</a></li> <li><a href="https://www.mozilla.org/legal/privacy/firefox">Privacy</a></li> </ul> </div> </div> </div> </div> <h1 class="sumo-page-heading">Trackers and scripts Firefox blocks in Enhanced Tracking Protection</h1> </div> </header> <article class="wiki-doc"> <div id="document_metadata" class="has-border-bottom"> <span class="product tooltip-container"> Firefox <span class="tooltip">Firefox</span> </span> <span class="last-updated"> <img class="pencil" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/pencil.e33c563f24c4f989.svg" /> <strong>Last updated:</strong> <span class="time"> 3 weeks, 2 days ago </span> </span> <span class="helpful-info"> <img class="thumbsup" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/thumbs-up.2cbd5d41625a84a7.svg"/><span class="helpful-count">84%</span> of users voted this helpful </span> </div> <section id="doc-content" class="document--content "> <p><a href="/en-US/kb/enhanced-tracking-protection-firefox-desktop">Enhanced Tracking Protection in Firefox</a> blocks many common trackers and harmful scripts. It reduces the ability of third parties to collect data about your browsing behavior. </p> <div id="toc"><h2>Table of Contents</h2><ul><li class="toclevel-1"><a href="#w_how-tracking-works"><span class="tocnumber">1</span> <span class="toctext">How tracking works</span></a></li><li class="toclevel-1"><a href="#w_social-media-trackers"><span class="tocnumber">2</span> <span class="toctext">Social media trackers</span></a></li><li class="toclevel-1"><a href="#w_cross-site-tracking-cookies"><span class="tocnumber">3</span> <span class="toctext">Cross-site tracking cookies</span></a><ul><li class="toclevel-2"><a href="#w_cookies-firefox-blocks-and-doesnt-block"><span class="tocnumber">3.1</span> <span class="toctext">Cookies Firefox blocks and doesn’t block</span></a></li></ul></li><li class="toclevel-1"><a href="#w_cryptominers"><span class="tocnumber">4</span> <span class="toctext">Cryptominers</span></a></li><li class="toclevel-1"><a href="#w_tracking-content"><span class="tocnumber">5</span> <span class="toctext">Tracking content</span></a></li><li class="toclevel-1"><a href="#w_fingerprinters"><span class="tocnumber">6</span> <span class="toctext">Fingerprinters</span></a></li></ul></div> <h1 id="w_how-tracking-works">How tracking works</h1> <p>Tracking relies on invisible code embedded in web pages. This code records your visits to websites and collects data about how you interact with pages. When the same tracker appears across multiple websites, it can compile a detailed profile of what you do online. Tracking companies also package, share, and sell this data to users of their service or other third parties. </p><p>These tracking techniques occur independent of the browser you use. The following trackers are blocked by default in Firefox, using a list of known trackers provided by <a href="https://disconnect.me/trackerprotection">Disconnect</a>. </p> <h1 id="w_social-media-trackers">Social media trackers</h1> <p>Social networks place trackers on other websites to follow what you do, see, and watch online. This allows social media companies to collect data about your browsing history and improve their ad targeting. Even if you don’t use a social network, that site can still collect data about your browsing habits. </p><p><strong>Social media trackers Firefox blocks and doesn’t block</strong> </p><p>Firefox blocks the most common trackers from Facebook, Twitter and LinkedIn that appear on other websites. </p> <ul><li>The Standard setting is balanced for protection and performance. Pages will still load normally. </li><li>The Strict mode blocks more trackers. Go to your global privacy preferences to set your <a href="/en-US/kb/enhanced-tracking-protection-firefox-desktop#w_strict-enhanced-tracking-protection">Enhanced Tracking Protection settings to Strict</a>. </li></ul> <p>Social media companies will still be able to collect data about you on their own social networks, including Facebook-owned services like Instagram, WhatsApp and Messenger. Logging in to sites using your Facebook or Twitter account is another way social networks can collect data about you. </p> <div class="note"> <p><strong>Want even more protection against Facebook?</strong><br> Facebook like and share buttons on other websites allow Facebook to track your browsing activity, even if you never click them. To strip these buttons of Facebook trackers, add the <a href="/en-US/kb/facebook-container-prevent-facebook-tracking">Facebook Container extension</a>. </p> </div> <h1 id="w_cross-site-tracking-cookies">Cross-site tracking cookies</h1> <p>Cross-site tracking cookies follow you from site to site to gather data about what you do online. This is most often done without your knowledge or consent. Data firms and analytics companies use these cookies to track you, profile you, make inferences about your interests, and retarget you with ads. Because these cookies are set by a different company than the website you’re on, they’re also referred to as third-party tracking cookies. To learn more, see <a href="/en-US/kb/third-party-trackers">Third-party trackers</a>. </p> <h2 id="w_cookies-firefox-blocks-and-doesnt-block">Cookies Firefox blocks and doesn’t block</h2> <p>By default, Firefox blocks the cookies that track your browsing activity across multiple websites. This includes cross-site tracking cookies set by ad, social media and analytics companies. Other cookies, such as those that remember your login credentials or items in your shopping cart, are still permitted by default. </p> <div class="for" data-for="fx132"><div class="note"><strong>Note:</strong> In ETP <a href="/en-US/kb/enhanced-tracking-protection-firefox-desktop#w_strict-enhanced-tracking-protection">Strict mode</a> Firefox blocks all cross-site (third-party) cookies.</div></div> <h1 id="w_cryptominers">Cryptominers</h1> <p>Cryptominers are a type of malware that use your system’s computing power to mine digital money. When your privacy settings are set to Standard (the Firefox default) or Strict, cryptominers are being blocked. </p><p>Generating cryptocurrencies usually requires solving a complex cryptologic puzzle, a computing-intensive process that consumes a lot of costly electrical energy. To evade the cost, cryptojackers deploy these scripts on other people’s computers without their consent. Cryptomining scripts drain your battery, slow down your computer, and can increase your energy bill. </p> <h1 id="w_tracking-content">Tracking content</h1> <p>Many websites load external ads, videos and other content with tracking code from other companies. For example, a website may embed a video from a video platform. The code that loads the video contains trackers. Blocking tracking content can make sites load much faster, but parts of pages might not work correctly or appear at all. </p><p>Tracking content can include: </p> <ul><li>Ads </li><li>Login fields </li><li>Forms </li><li>Payments </li><li>Comments </li><li>Videos and photos </li><li>Buttons </li></ul> <div class="note"> <p>By default, tracking content is blocked in <a href="/en-US/kb/private-browsing-use-firefox-without-history">Private Windows</a> only. To add this protection for all windows: </p> <ol><li><span class="for" data-for="mac">In the Menu bar at the top of the screen, click <span class="menu">Firefox</span> and then select <span class="menu">Preferences</span> or <span class="menu">Settings</span>, depending on your macOS version.</span><span class="for" data-for="win,linux">Click the menu button <img alt="Fx89menuButton" class="wiki-image frameless lazy" data-original-src="https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/gallery/images/2021-05-15-11-18-38-e5b736.png" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/placeholder.688345f843bb37ed.gif" title=""> and select <span class="menu">Settings</span>.</span> </li><li>Select the <span class="menu">Privacy & Security</span> panel and choose <span class="menu">Strict</span> under <em>Enhanced Tracking Protection</em>. </li></ol> </div> <p>If parts of a webpage don’t work or the site appears to be broken, click the shield <img alt="IG shield" class="wiki-image frameless lazy" data-original-src="https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/gallery/images/2024-05-01-08-10-24-5dc90b.png" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/placeholder.688345f843bb37ed.gif" title=""> in the address bar to toggle off protections for that site. This will allow all content to load, including trackers. See <a href="/en-US/kb/enhanced-tracking-protection-firefox-desktop#w_what-to-do-if-a-site-seems-broken">this article's section on how to turn off Enhanced Tracking Protection</a> for details, and for more information, visit <a href="/en-US/kb/smartblock-enhanced-tracking-protection">SmartBlock for Enhanced Tracking Protection</a>. </p> <h1 id="w_fingerprinters">Fingerprinters</h1> <p>Fingerprinters collect settings from your browser and computer to create a profile of you. Using this digital fingerprint, they can create a unique profile of you to track you across different websites. When your privacy settings are set to Standard (the Firefox default) or Strict, domains that are known fingerprinters are being blocked. See <a href="https://blog.mozilla.org/security/2020/01/07/firefox-72-fingerprinting/">this Mozilla Security blog post</a> for details. </p><p>These are some of the characteristics of your device and browser that fingerprints can collect: </p> <ul><li>Extensions you use </li><li>Operating system and model of your device </li><li>Screen resolution and language </li><li>Information about your network connection </li><li>Fonts installed on your computer </li></ul> </section> <p class="share-link"> <br/> Share this article: <a href="https://mzl.la/3daMFnI">https://mzl.la/3daMFnI</a> </p> </article> <section class="sumo-page-section hide-on-large"> <div class="document-vote elevation-01 text-center"> <form class="document-vote--form helpful" action="/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track/vote" method="post"> <input type='hidden' name='csrfmiddlewaretoken' value='jphFa2Kzhd0LPso49aHwIjtSui3kypbbxX0gQTFCwUcACxmKIupDpD1SJNG9acNm' /> <h4 class="document-vote--heading">Was this article helpful?</h4> <div class="document-vote--buttons"> <input type="hidden" name="revision_id" value="287744" /> <input type="hidden" name="source" value="footer" /> <button type="submit" class="btn helpful-button" name="helpful"><span class="hidden-text">Yes</span>👍</button> <button type="submit" class="btn not-helpful-button" name="not-helpful"><span class="hidden-text">No</span>👎</button> <img class="wait" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/spinner.18d6c26adc937688.gif" alt="Please wait..." /> </div> </form> </div> </section> <section id="doc-contributors" class="document--contributors sumo-page-section"> <p class="help-title text-body-md">These fine people helped write this article:</p> <div class="document--contributors-list text-body-xs"><a class="user secondary-color" rel="nofollow" href="/en-US/user/AliceWyman/">AliceWyman</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/Chris_Ilias/">Chris Ilias</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/michro/">Michele Rodaro</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/TyDraniu/">TyDraniu</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/Mozinet/">Mozinet</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/heyjoni/">Joni</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/marcelo.ghelman/">Marcelo Ghelman</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/zerdo/">Rok</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/Y.D./">YD</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/Lamont287/">Lamont Gardenhire</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/jeff.youmans/">Jeff</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/erling.rosag/">ErlingR</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/Fabi.L/">Fabi</a>, <a class="user secondary-color" rel="nofollow" href="/en-US/user/lsiebert/">Lucas Siebert</a></div> </section> <section class="sumo-page-section"> <div class="card card--callout is-full-width has-moz-headings"> <div class="card--callout-wrap-narrow"> <img class="card--feature-img" src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/volunteer.a3be8d331849774b.png" alt="Illustration of hands" /> <div class="card--details"> <h3 class="card--title">Volunteer</h3> <p class="card--desc">Grow and share your expertise with others. Answer questions and improve our knowledge base.</p> <p class="card--desc"><strong><a href="/en-US/contribute">Learn More</a></strong></p> </div> </div> </div> </section> </section> </main> </div> </div> </div> <footer class="mzp-c-footer"> <div class="mzp-l-content"> <nav class="mzp-c-footer-primary"> <div class="mzp-c-footer-cols"> <section class="mzp-c-footer-col"> <h5 class="mzp-c-footer-heading">Mozilla</h5> <ul class="mzp-c-footer-list"> <li><a href="https://www.mozilla.org/en-US/about/legal/fraud-report/">Report Trademark Abuse</a></li> <li><a href="https://github.com/mozilla/kitsune/">Source code</a></li> <li><a href="https://twitter.com/firefox">Twitter</a></li> <li> <a href="/en-US/contribute" data-event-name="link_click" data-event-parameters='{"link_name": "footer.join-our-community.contribute-home"}'> Join our Community </a> </li> <li> <a href="/en-US/" data-event-name="link_click" data-event-parameters='{"link_name": "footer.explore-help-articles.home"}'> Explore Help Articles </a> </li> </ul> </section> <section class="mzp-c-footer-col"> <h5 class="mzp-c-footer-heading">Firefox</h5> <ul class="mzp-c-footer-list"> <li><a href="https://www.mozilla.org/firefox/new/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral">Download</a></li> <li><a href="https://www.mozilla.org/firefox/new/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral">Firefox desktop</a></li> <li><a href="https://www.mozilla.org/firefox/mobile/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral">Android Browser</a></li> <li><a href="https://www.mozilla.org/firefox/mobile/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral">iOS Browser</a></li> <li><a href="https://www.mozilla.org/firefox/mobile/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral">Focus Browser</a></li> </ul> </section> <section class="mzp-c-footer-col"> <h5 class="mzp-c-footer-heading">Firefox for Developers</h5> <ul class="mzp-c-footer-list"> <li><a href="https://www.mozilla.org/en-US/firefox/developer/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral">Developer Edition</a></li> <li><a href="https://www.mozilla.org/en-US/firefox/channel/desktop/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral#beta">Beta</a></li> <li><a href="https://www.mozilla.org/en-US/firefox/channel/android/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral#beta">Beta for Android</a></li> <li><a href="https://www.mozilla.org/en-US/firefox/channel/desktop/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral#nightly">Nightly</a></li> <li><a href="https://www.mozilla.org/en-US/firefox/channel/android/?utm_source=support.mozilla.org&utm_campaign=footer&utm_medium=referral#nightly">Nightly for Android</a></li> </ul> </section> <section class="mzp-c-footer-col"> <h5 class="mzp-c-footer-heading">Mozilla Account</h5> <ul class="mzp-c-footer-list"> <li><a rel="nofollow" href="/en-US/users/auth">Sign In/Up</a></li> <li> <a href="/en-US/kb/access-mozilla-services-firefox-account" data-event-name="link_click" data-event-parameters='{"link_name": "footer.what-is-it.kb-article"}'> What Is It? </a> </li> <li><a href="https://accounts.firefox.com/reset_password">Reset Password</a></li> <li> <a href="/en-US/kb/switching-devices" data-event-name="link_click" data-event-parameters='{"link_name": "footer.sync-your-data.kb-article"}'> Sync Your Data </a> </li> <li> <a href="/en-US/products/mozilla-account" data-event-name="link_click" data-event-parameters='{ "link_name": "footer.get-help.product-home", "link_detail": "mozilla-account" }'> Get Help </a> </li> </ul> </section> <section class="mzp-c-footer-col lang-col"> <form class="mzp-c-language-switcher" method="get" action="#"> <a class="mzp-c-language-switcher-link" href="https://www.mozilla.org/locales/">Language</a> <label for="mzp-c-language-switcher-select">Language</label> <select id="mzp-c-language-switcher-select" class="mzp-js-language-switcher-select" name="lang"> <option value="af" >Afrikaans</option> <option value="ar" >عربي</option> <option value="az" >Azərbaycanca</option> <option value="bg" >Български</option> <option value="bm" >Bamanankan</option> <option value="bn" >বাংলা</option> <option value="bs" >Bosanski</option> <option value="ca" >català</option> <option value="cs" >Čeština</option> <option value="da" >Dansk</option> <option value="de" >Deutsch</option> <option value="ee" >Èʋegbe</option> <option value="el" >Ελληνικά</option> <option value="en-US" selected>English</option> <option value="es" >Español</option> <option value="et" >eesti keel</option> <option value="eu" >Euskara</option> <option value="fa" >فارسی</option> <option value="fi" >suomi</option> <option value="fr" >Français</option> <option value="fy-NL" >Frysk</option> <option value="ga-IE" >Gaeilge (Éire)</option> <option value="gl" >Galego</option> <option value="gn" >Avañe'ẽ</option> <option value="gu-IN" >ગુજરાતી</option> <option value="ha" >هَرْشَن هَوْسَ</option> <option value="he" >עברית</option> <option value="hi-IN" >हिन्दी (भारत)</option> <option value="hr" >Hrvatski</option> <option value="hu" >Magyar</option> <option value="dsb" >Dolnoserbšćina</option> <option value="hsb" >Hornjoserbsce</option> <option value="id" >Bahasa Indonesia</option> <option value="ig" >Asụsụ Igbo</option> <option value="it" >Italiano</option> <option value="ja" >日本語</option> <option value="ka" >ქართული</option> <option value="km" >ខ្មែរ</option> <option value="kn" >ಕನ್ನಡ</option> <option value="ko" >한국어</option> <option value="ln" >Lingála</option> <option value="lt" >lietuvių kalba</option> <option value="mg" >Malagasy</option> <option value="mk" >Македонски</option> <option value="ml" >മലയാളം</option> <option value="ms" >Bahasa Melayu</option> <option value="ne-NP" >नेपाली</option> <option value="nl" >Nederlands</option> <option value="no" >Norsk</option> <option value="pl" >Polski</option> <option value="pt-BR" >Português (do Brasil)</option> <option value="pt-PT" >Português (Europeu)</option> <option value="ro" >română</option> <option value="ru" >Русский</option> <option value="si" >සිංහල</option> <option value="sk" >slovenčina</option> <option value="sl" >slovenščina</option> <option value="sq" >Shqip</option> <option value="sr" >Српски</option> <option value="sw" >Kiswahili</option> <option value="sv" >Svenska</option> <option value="ta" >தமிழ்</option> <option value="ta-LK" >தமிழ் (இலங்கை)</option> <option value="te" >తెలుగు</option> <option value="th" >ไทย</option> <option value="tn" >Setswana</option> <option value="tr" >Türkçe</option> <option value="uk" >Українська</option> <option value="ur" >اُردو</option> <option value="vi" >Tiếng Việt</option> <option value="wo" >Wolof</option> <option value="xh" >isiXhosa</option> <option value="yo" >èdè Yorùbá</option> <option value="zh-CN" >中文 (简体)</option> <option value="zh-TW" >正體中文 (繁體)</option> <option value="zu" >isiZulu</option> </select>  <button type="submit">Go</button> </form> <ul class="mzp-c-footer-links-social"> <li><a class="twitter" href="https://twitter.com/firefox">Twitter<span>(@firefox)</span></a></li> <li><a class="youtube" href="https://www.youtube.com/firefoxchannel">YouTube<span> (firefoxchannel)</span></a></li> <li><a class="instagram" href="https://www.instagram.com/firefox">Instagram<span> (firefox)</span></a></li> </ul> </section> </div> </nav> <nav class="mzp-c-footer-secondary"> <div class="mzp-c-footer-link-col"> <div class="mzp-c-footer-primary-logo"><a href="https://www.mozilla.org/">Mozilla</a></div> <div class="mzp-c-footer-legal"> <ul> <li><a href="https://www.mozilla.org/">mozilla.org</a></li> <li><a href="https://www.mozilla.org/about/legal/terms/mozilla/">Terms of Service</a></li> <li><a href="https://www.mozilla.org/privacy/websites/">Privacy</a></li> <li><a href="https://www.mozilla.org/privacy/websites/#cookies">Cookies</a></li> <li><a href="https://www.mozilla.org/en-US/contact/">Contact</a></li> </ul> </div> </div> <div class="mzp-c-footer-legal-col"> <p> Visit <a href="https://www.mozilla.org" rel="external noopener" data-link-type="footer" data-link-name="Mozilla Corporation">Mozilla Corporation’s</a> not-for-profit parent, the <a href="https://foundation.mozilla.org" rel="external noopener" data-link-type="footer" data-link-name="Mozilla Foundation">Mozilla Foundation</a>. </p> <p> Portions of this content are ©1998–2024 by individual mozilla.org contributors. Content available under a <a rel="external noopener" href="https://www.mozilla.org/foundation/licensing/website-content/">Creative Commons license</a>. </p> </div> </nav> </div> </footer> <script src="https://assets-prod.sumo.prod.webservices.mozgcp.net/static/jsi18n/en-us/djangojs-min.js"></script> </body> </html>

CINXE.COM

Trackers and scripts Firefox blocks in Enhanced Tracking Protection | Firefox Help