Chrome DevTools | Chrome for Developers

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href="https://developer.chrome.google.cn/docs/devtools?hl=vi" /><title>Chrome DevTools  |  Chrome for Developers</title> <meta property="og:title" content="Chrome DevTools  |  Chrome for Developers"><meta name="description" content="Debug and optimize your web applications with Chrome DevTools."> <meta property="og:description" content="Debug and optimize your web applications with Chrome DevTools."><meta property="og:url" content="https://developer.chrome.com/docs/devtools"><meta property="og:locale" content="en"><script type="application/ld+json"> { "@context": "https://schema.org", "@type": "Article", "headline": "Chrome DevTools" } </script><script type="application/ld+json"> { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{ "@type": "ListItem", "position": 1, "name": "Docs", "item": "https://developer.chrome.com/docs" },{ "@type": "ListItem", "position": 2, "name": "Chrome DevTools", "item": "https://developer.chrome.com/docs/devtools" }] } 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</li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/web-platform" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/web-platform" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="build with chrome" tooltip > <div class="devsite-nav-item-title"> Web Platform </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/capabilities" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/capabilities" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="build with chrome" tooltip > <div class="devsite-nav-item-title"> Capabilities </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/chromedriver" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/chromedriver" track-metadata-position="nav - docs" 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tooltip > <div class="devsite-nav-item-title"> Web on Android </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/origintrials/" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/origintrials/" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="build with chrome" tooltip > <div class="devsite-nav-item-title"> Origin trials </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/release-notes" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/release-notes" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="build with chrome" tooltip > <div class="devsite-nav-item-title"> Release notes </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section productivity-icon dcc-subnav"> <li class="devsite-nav-title" role="heading" tooltip>Productivity</li> <li class="devsite-nav-description">Create the best experience for your users with the web's best tools.</li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="productivity" tooltip > <div class="devsite-nav-item-title"> DevTools </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/lighthouse" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/lighthouse" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="productivity" tooltip > <div class="devsite-nav-item-title"> Lighthouse </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/crux" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/crux" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="productivity" tooltip > <div class="devsite-nav-item-title"> Chrome UX Report </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/accessibility" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/accessibility" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="productivity" tooltip > <div class="devsite-nav-item-title"> Accessibility </div> </a> </li> </ul> <ul class="devsite-tabs-dropdown-section dcc-subnav second-column-list"> <li class="devsite-nav-description">Get things done quicker and neater, with our ready-made libraries. </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/workbox" track-type="nav" 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track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/ai" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="experience" tooltip > <div class="devsite-nav-item-title"> AI </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/performance" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/performance" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="experience" tooltip > <div class="devsite-nav-item-title"> Performance </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/css-ui" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/css-ui" track-metadata-position="nav - docs" track-metadata-module="tertiary nav" track-metadata-module_headline="experience" tooltip > <div class="devsite-nav-item-title"> CSS and UI </div> </a> 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class="devsite-search-form" action="https://developer.chrome.com/s/results" method="GET"> <div class="devsite-search-container"> <button type="button" search-open class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Open search"></button> <div class="devsite-searchbox"> <input aria-activedescendant="" aria-autocomplete="list" aria-label="Search" aria-expanded="false" aria-haspopup="listbox" autocomplete="off" class="devsite-search-field devsite-search-query" name="q" placeholder="Search" role="combobox" type="text" value="" > <div class="devsite-search-image material-icons" aria-hidden="true"> </div> <div class="devsite-search-shortcut-icon-container" aria-hidden="true"> <kbd class="devsite-search-shortcut-icon">/</kbd> </div> </div> </div> </form> <button type="button" search-close class="devsite-search-button devsite-header-icon-button button-flat material-icons" aria-label="Close search"></button> </devsite-search> </div> <devsite-appearance-selector></devsite-appearance-selector> <devsite-language-selector> <ul role="presentation"> <li role="presentation"> <a role="menuitem" lang="en" >English</a> </li> <li role="presentation"> <a role="menuitem" lang="de" >Deutsch</a> </li> <li role="presentation"> <a role="menuitem" lang="es_419" >Español – América Latina</a> </li> <li role="presentation"> <a role="menuitem" lang="fr" >Français</a> </li> <li role="presentation"> <a role="menuitem" lang="id" >Indonesia</a> </li> <li role="presentation"> <a role="menuitem" lang="it" >Italiano</a> </li> <li role="presentation"> <a role="menuitem" lang="nl" >Nederlands</a> </li> <li role="presentation"> <a role="menuitem" lang="pl" >Polski</a> </li> <li role="presentation"> <a role="menuitem" lang="pt_br" >Português – Brasil</a> </li> <li role="presentation"> <a role="menuitem" lang="vi" >Tiếng Việt</a> </li> <li role="presentation"> <a role="menuitem" lang="tr" >Türkçe</a> </li> <li role="presentation"> <a role="menuitem" lang="ru" >Русский</a> </li> <li role="presentation"> <a role="menuitem" lang="he" >עברית</a> </li> <li role="presentation"> <a role="menuitem" lang="ar" >العربيّة</a> </li> <li role="presentation"> <a role="menuitem" lang="fa" >فارسی</a> </li> <li role="presentation"> <a role="menuitem" lang="hi" >हिंदी</a> </li> <li role="presentation"> <a role="menuitem" lang="bn" >বাংলা</a> </li> <li role="presentation"> <a role="menuitem" lang="th" >ภาษาไทย</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_cn" >中文 – 简体</a> </li> <li role="presentation"> <a role="menuitem" lang="zh_tw" >中文 – 繁體</a> </li> <li role="presentation"> <a role="menuitem" lang="ja" >日本語</a> </li> <li role="presentation"> <a role="menuitem" lang="ko" >한국어</a> </li> </ul> </devsite-language-selector> <devsite-user enable-profiles id="devsite-user"> <span class="button devsite-top-button" aria-hidden="true" visually-hidden>Sign in</span> </devsite-user> </div> </div> </div> <div class="devsite-collapsible-section "> <div class="devsite-header-background"> <div class="devsite-product-id-row" > <div class="devsite-product-description-row"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item "> <a href="https://developer.chrome.com/docs/devtools" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Lower Header" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="Chrome DevTools" > Chrome DevTools </a> </li> </ul> </div> </div> <div class="devsite-doc-set-nav-row"> <devsite-tabs class="lower-tabs"> <nav class="devsite-tabs-wrapper" aria-label="Lower tabs"> <tab class="devsite-active"> <a href="https://developer.chrome.com/docs/devtools" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - devtools" track-metadata-module="primary nav" aria-label="DevTools, selected" data-category="Site-Wide Custom Events" data-label="Tab: DevTools" track-name="devtools" > DevTools </a> </tab> <tab class="devsite-dropdown "> <a href="https://developer.chrome.com/docs/devtools/dom" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/dom" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - panels" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Panels" track-name="panels" > Panels </a> <a href="#" role="button" aria-haspopup="true" aria-expanded="false" aria-label="Dropdown menu for Panels" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/dom" track-metadata-position="nav - panels" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Panels" track-name="panels" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></a> <div class="devsite-tabs-dropdown" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/elements" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/elements" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Elements </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/ai-assistance" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/ai-assistance" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> AI assistance </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/console" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/console" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Console </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/sources" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/sources" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Sources </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/network/overview" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/network/overview" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Network </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/performance/overview" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/performance/overview" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Performance </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/memory" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/memory" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Memory </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/application" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/application" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Application </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/recorder/overview" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/recorder/overview" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Recorder </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/rendering" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/rendering" track-metadata-position="nav - panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Rendering </div> </a> </li> </ul> </div> </div> </div> </tab> <tab class="devsite-dropdown "> <a href="https://developer.chrome.com/docs/devtools/security" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/security" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - more panels" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: More panels" track-name="more panels" > More panels </a> <a href="#" role="button" aria-haspopup="true" aria-expanded="false" aria-label="Dropdown menu for More panels" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/security" track-metadata-position="nav - more panels" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: More panels" track-name="more panels" class="devsite-tabs-dropdown-toggle devsite-icon devsite-icon-arrow-drop-down"></a> <div class="devsite-tabs-dropdown" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section "> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/autofill" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/autofill" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Autofill </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/css/animations" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/css/animations" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Animations </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/changes" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/changes" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Changes </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/coverage" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/coverage" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Coverage </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/developer-resources" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/developer-resources" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Developer resources </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/css-overview" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/css-overview" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> CSS overview </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/issues" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/issues" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Issues </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/layers" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/layers" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Layers </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/lighthouse" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/lighthouse" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Lighthouse </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/media-panel" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/media-panel" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Media </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/memory-inspector" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/memory-inspector" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Memory Inspector </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/device-mode/override-user-agent" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/device-mode/override-user-agent" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Network conditions </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/network-request-blocking" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/network-request-blocking" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Network request blocking </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/performance-monitor" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/performance-monitor" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Performance monitor </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/protocol-monitor" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/protocol-monitor" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Protocol monitor </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/quick-source" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/quick-source" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Quick source </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/security" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/security" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Security </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/sensors" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/sensors" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> Sensors </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/webaudio" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/webaudio" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> WebAudio </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/webauthn" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/webauthn" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> WebAuthn </div> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/docs/devtools/whats-new" track-type="nav" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/whats-new" track-metadata-position="nav - more panels" track-metadata-module="tertiary nav" tooltip > <div class="devsite-nav-item-title"> What's new </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://developer.chrome.com/docs/devtools/settings" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/settings" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - settings" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Settings" track-name="settings" > Settings </a> </tab> <tab > <a href="https://developer.chrome.com/docs/devtools/accessibility/reference" track-metadata-eventdetail="https://developer.chrome.com/docs/devtools/accessibility/reference" class="devsite-tabs-content gc-analytics-event " track-type="nav" track-metadata-position="nav - accessibility" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Accessibility" track-name="accessibility" > Accessibility </a> </tab> </nav> </devsite-tabs> </div> </div> </div> </div> </devsite-header> <devsite-book-nav scrollbars hidden> <div class="devsite-book-nav-filter" hidden> <span class="filter-list-icon material-icons" aria-hidden="true"></span> <input type="text" placeholder="Filter" aria-label="Type to filter" role="searchbox"> <span class="filter-clear-button hidden" data-title="Clear filter" aria-label="Clear filter" role="button" tabindex="0"></span> </div> <nav class="devsite-book-nav devsite-nav nocontent" aria-label="Side menu"> <div class="devsite-mobile-header"> <button type="button" id="devsite-close-nav" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Close navigation" aria-label="Close navigation"> </button> <div class="devsite-product-name-wrapper"> <a href="/" class="devsite-site-logo-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Site logo" track-type="globalNav" track-name="chromeForDevelopers" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/chrome/images/lockup-dark-theme.svg" media="(prefers-color-scheme: dark)" class="devsite-dark-theme" alt="Chrome for Developers"> <img src="https://www.gstatic.com/devrel-devsite/prod/v870e399c64f7c43c99a3043db4b3a74327bb93d0914e84a0c3dba90bbfd67625/chrome/images/lockup.svg" class="devsite-site-logo" alt="Chrome for Developers"> </picture> </a> <span class="devsite-product-name"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item "> </li> </ul> </span> </div> </div> <div class="devsite-book-nav-wrapper"> <div class="devsite-mobile-nav-top"> <ul class="devsite-nav-list"> <li class="devsite-nav-item"> <a href="/case-studies" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Get inspired" track-name="get inspired" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Get inspired" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Get inspired </span> </a> </li> <li class="devsite-nav-item"> <a href="/blog" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Blog" track-name="blog" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Blog" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Blog </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs" class="devsite-nav-title gc-analytics-event devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Docs" track-name="docs" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Docs" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Docs </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Docs" track-name="docs" > <span class="devsite-nav-text" tooltip menu="Docs"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Docs"> </span> </span> </li> </ul> <ul class="devsite-nav-responsive-tabs"> <li class="devsite-nav-item"> <a href="/docs/devtools" class="devsite-nav-title gc-analytics-event devsite-nav-has-children devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: DevTools" track-name="devtools" data-category="Site-Wide Custom Events" data-label="Responsive Tab: DevTools" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip menu="_book"> DevTools </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="_book"> </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/dom" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Panels" track-name="panels" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Panels" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Panels </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu devsite-lower-tab-item"> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Panels" track-name="panels" > <span class="devsite-nav-text" tooltip menu="Panels"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Panels"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/security" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: More panels" track-name="more panels" data-category="Site-Wide Custom Events" data-label="Responsive Tab: More panels" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > More panels </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu devsite-lower-tab-item"> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: More panels" track-name="more panels" > <span class="devsite-nav-text" tooltip menu="More panels"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="More panels"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/settings" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Settings" track-name="settings" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Settings" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Settings </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/accessibility/reference" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Accessibility" track-name="accessibility" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Accessibility" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Accessibility </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/new" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: New in Chrome" track-name="new in chrome" data-category="Site-Wide Custom Events" data-label="Responsive Tab: New in Chrome" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > New in Chrome </span> </a> </li> </ul> </div> <div class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="Docs" aria-label="Side menu" hidden> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Build with Chrome </span> </span> </li> <li class="devsite-nav-item"> <a href="/docs/web-platform" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Web Platform" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Web Platform </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/capabilities" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Capabilities" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Capabilities </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/chromedriver" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: ChromeDriver" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > ChromeDriver </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/extensions" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Extensions" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Extensions </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/webstore" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Chrome Web Store" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Chrome Web Store </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/chromium" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Chromium" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Chromium </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/aurora" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Aurora" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Aurora </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/android" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Web on Android" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Web on Android </span> </a> </li> <li class="devsite-nav-item"> <a href="https://developer.chrome.com/origintrials/" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Origin trials" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Origin trials </span> </a> </li> <li class="devsite-nav-item"> <a href="/release-notes" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Release notes" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Release notes </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Productivity </span> </span> </li> <li class="devsite-nav-item"> <a href="/docs/devtools" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: DevTools" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > DevTools </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/lighthouse" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Lighthouse" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Lighthouse </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/crux" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Chrome UX Report" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Chrome UX Report </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/accessibility" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Accessibility" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Accessibility </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/workbox" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Workbox" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Workbox </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/puppeteer" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Puppeteer" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Puppeteer </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Experience </span> </span> </li> <li class="devsite-nav-item"> <a href="/docs/ai" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: AI" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > AI </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/performance" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Performance" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Performance </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/css-ui" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: CSS and UI" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > CSS and UI </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/identity" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Identity" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Identity </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/payments" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Payments" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Payments </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/privacy-security" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Privacy and security" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Privacy and security </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Resources </span> </span> </li> <li class="devsite-nav-item"> <a href="/docs" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: All documentation" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > All documentation </span> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/baseline" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Baseline" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Baseline </span> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: web.dev" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > web.dev </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Panels" aria-label="Side menu" hidden> <li class="devsite-nav-item"> <a href="/docs/devtools/elements" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Elements" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Elements </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/ai-assistance" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: AI assistance" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > AI assistance </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/console" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Console" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Console </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/sources" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Sources" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Sources </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/network/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Network" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Network </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/performance/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Performance" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Performance </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/memory" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Memory" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Memory </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/application" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Application" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Application </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/recorder/overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Recorder" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Recorder </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/rendering" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Rendering" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Rendering </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="More panels" aria-label="Side menu" hidden> <li class="devsite-nav-item"> <a href="/docs/devtools/autofill" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Autofill" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Autofill </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/css/animations" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Animations" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Animations </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/changes" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Changes" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Changes </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/coverage" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Coverage" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Coverage </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/developer-resources" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Developer resources" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Developer resources </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/css-overview" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: CSS overview" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > CSS overview </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/issues" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Issues" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Issues </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/layers" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Layers" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Layers </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/lighthouse" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Lighthouse" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Lighthouse </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/devtools/media-panel" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Media" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Media </span> </a> </li> <li 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Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded disabled> </devsite-toc> <div class="devsite-article-body clearfix "> <section class="devsite-landing-row devsite-landing-row-1-up devsite-landing-row-50 devsite-landing-row-marquee devsite-landing-row-large-headings" background="white" header-position="top" > <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item" description-position="bottom" > <div class="devsite-landing-row-item-media "> <figure class="devsite-landing-row-item-image"> <picture> <img alt="" src="https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot.png" srcset="https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_36.png 36w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_48.png 48w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_72.png 72w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_96.png 96w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_480.png 480w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_720.png 720w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_856.png 856w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_960.png 960w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_1440.png 1440w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_1920.png 1920w,https://developer.chrome.com/static/docs/devtools/images/devtools-screenshot_2880.png 2880w" sizes="(max-width: 600px) 100vw, (max-width: 840px) 50vw, 708px" fetchpriority="high"> </picture> </figure> </div> <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="devtools" data-text="DevTools" class="hide-from-toc no-link" tabindex="0"> DevTools </h3> <div class="devsite-landing-row-item-description-content"> Chrome DevTools is a set of web developer tools built directly into the Google Chrome browser. DevTools lets you edit pages on-the-fly and diagnose problems quickly, which helps you build better websites, faster. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/overview" class="button-primary button " >Get started</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-3-up devsite-landing-row-cards" background="grey" header-position="top" > <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="open-devtools" data-text="Open DevTools" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/open"> Open DevTools </a> </h3> <div class="devsite-landing-row-item-description-content"> All of the ways that you can open Chrome DevTools. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/news"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="whats-new-in-devtools" data-text="What's new in DevTools" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/news"> What's new in DevTools </a> </h3> <div class="devsite-landing-row-item-description-content"> Stay up to date with the latest DevTools changes. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/tips"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> video_library </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="devtools-tips" data-text="DevTools Tips" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/tips"> DevTools Tips </a> </h3> <div class="devsite-landing-row-item-description-content"> A series of bite-size videos to help you to learn features in DevTools. </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-3-up" header-position="left" > <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header" > <div class="devsite-landing-row-header-text"> <h2 id="commands-and-shortcuts" data-text="Commands and shortcuts" tabindex="0"> Commands and shortcuts </h2> <div class="devsite-landing-row-description"> Quickly accomplish tasks. </div> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="run-commands-in-the-command-menu" data-text="Run commands in the command menu" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/command-menu"> Run commands in the command menu </a> </h3> <div class="devsite-landing-row-item-description-content"> Open the command menu, run commands, open files, see other actions, and more. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/command-menu" class="button " >Read the doc</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="keyboard-shortcuts" data-text="Keyboard shortcuts" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/shortcuts"> Keyboard shortcuts </a> </h3> <div class="devsite-landing-row-item-description-content"> A comprehensive reference of keyboard shortcuts. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/shortcuts" class="button " >Read the doc</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="disable-javascript" data-text="Disable JavaScript" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/javascript/disable"> Disable JavaScript </a> </h3> <div class="devsite-landing-row-item-description-content"> See how a web page looks and behaves when JavaScript is disabled. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/javascript/disable" class="button " >Read the doc</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-2-up devsite-landing-row-cards" background="grey" header-position="top" > <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/device-mode"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="simulate-mobile-devices-with-device-mode" data-text="Simulate mobile devices with device mode" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/device-mode"> Simulate mobile devices with device mode </a> </h3> <div class="devsite-landing-row-item-description-content"> Simulate devices to build mobile-first websites. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/search"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="search-across-loaded-resources" data-text="Search across loaded resources" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/search"> Search across loaded resources </a> </h3> <div class="devsite-landing-row-item-description-content"> Find text across all loaded resources with the Search panel. </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-3-up" header-position="left" > <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header" > <div class="devsite-landing-row-header-text"> <h2 id="panels" data-text="Panels" tabindex="0"> Panels </h2> <div class="devsite-landing-row-description"> Discover the power of each DevTools panel. </div> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="elements-dom" data-text="Elements - DOM" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/dom"> Elements - DOM </a> </h3> <div class="devsite-landing-row-item-description-content"> Learn how to view and change a page's DOM. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/dom" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="elements-css" data-text="Elements - CSS" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/css"> Elements - CSS </a> </h3> <div class="devsite-landing-row-item-description-content"> Learn how to view and change a page's CSS. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/css" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="console" data-text="Console" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/console"> Console </a> </h3> <div class="devsite-landing-row-item-description-content"> Log messages and run JavaScript. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/console" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="sources" data-text="Sources" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/sources"> Sources </a> </h3> <div class="devsite-landing-row-item-description-content"> View and edit files, create snippets, debug JavaScript, and set up a workspace. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/sources" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="network" data-text="Network" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/network/overview"> Network </a> </h3> <div class="devsite-landing-row-item-description-content"> Log network requests. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/network/overview" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="performance" data-text="Performance" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/performance/overview"> Performance </a> </h3> <div class="devsite-landing-row-item-description-content"> Evaluate website performance. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/performance/overview" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="memory" data-text="Memory" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/memory"> Memory </a> </h3> <div class="devsite-landing-row-item-description-content"> Find memory issues that affect page performance, including memory leaks, and more. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/memory" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="application" data-text="Application" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/progressive-web-apps"> Application </a> </h3> <div class="devsite-landing-row-item-description-content"> Inspect, modify, and debug web apps, test cache, view storage, and more. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/progressive-web-apps" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="recorder" data-text="Recorder" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/recorder/overview"> Recorder </a> </h3> <div class="devsite-landing-row-item-description-content"> Record, replay, measure user flows, and edit their steps. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/recorder/overview" class="button " >Read the docs</a> </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" > <div class="devsite-landing-row-item-body"> <h3 id="rendering" data-text="Rendering" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/rendering"> Rendering </a> </h3> <div class="devsite-landing-row-item-description-content"> Discover a collection of options that affect web content rendering. </div> <div class="devsite-landing-row-item-buttons"> <a href="https://developer.chrome.com/docs/devtools/rendering" class="button " >Read the docs</a> </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-3-up devsite-landing-row-cards" background="grey" header-position="top" > <div class="devsite-landing-row-inner"> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/autofill"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="autofill" data-text="Autofill" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/autofill"> Autofill </a> </h3> <div class="devsite-landing-row-item-description-content"> Inspect and debug saved addresses. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/issues"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="issues" data-text="Issues" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/issues"> Issues </a> </h3> <div class="devsite-landing-row-item-description-content"> Find and fix problems with your website. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/security"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="security" data-text="Security" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/security"> Security </a> </h3> <div class="devsite-landing-row-item-description-content"> Make sure that a page is fully protected by HTTPS. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/memory-inspector"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="memory-inspector" data-text="Memory inspector" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/memory-inspector"> Memory inspector </a> </h3> <div class="devsite-landing-row-item-description-content"> Inspect an ArrayBuffer, TypedArray, or DataView in JavaScript, as well as WebAssembly and memory of C++ Wasm apps. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/device-mode/override-user-agent"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="network-conditions" data-text="Network conditions" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/device-mode/override-user-agent"> Network conditions </a> </h3> <div class="devsite-landing-row-item-description-content"> Override the user agent string. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/network-request-blocking"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="network-request-blocking" data-text="Network request blocking" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/network-request-blocking"> Network request blocking </a> </h3> <div class="devsite-landing-row-item-description-content"> Test your site by blocking network requests. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/media-panel"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="media" data-text="Media" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/media-panel"> Media </a> </h3> <div class="devsite-landing-row-item-description-content"> View information and debug media players per browser tab. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/css/animations"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="animations" data-text="Animations" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/css/animations"> Animations </a> </h3> <div class="devsite-landing-row-item-description-content"> Inspect and modify animations. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/changes"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="changes" data-text="Changes" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/changes"> Changes </a> </h3> <div class="devsite-landing-row-item-description-content"> Track changes to HTML, CSS, and JavaScript. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/coverage"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="coverage" data-text="Coverage" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/coverage"> Coverage </a> </h3> <div class="devsite-landing-row-item-description-content"> Find and analyze unused JavaScript and CSS code. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/developer-resources"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="developer-resources" data-text="Developer resources" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/developer-resources"> Developer resources </a> </h3> <div class="devsite-landing-row-item-description-content"> Check if source maps load successfully and load them manually. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/css-overview"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="css-overview" data-text="CSS Overview" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/css-overview"> CSS Overview </a> </h3> <div class="devsite-landing-row-item-description-content"> Identify potential CSS improvements. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/lighthouse"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="lighthouse" data-text="Lighthouse" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/lighthouse"> Lighthouse </a> </h3> <div class="devsite-landing-row-item-description-content"> Optimize website speed with the Lighthouse panel. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/performance-insights"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="performance-insights" data-text="Performance insights" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/performance-insights"> Performance insights </a> </h3> <div class="devsite-landing-row-item-description-content"> Get actionable insights on your website's performance. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/performance-monitor"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="performance-monitor" data-text="Performance monitor" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/performance-monitor"> Performance monitor </a> </h3> <div class="devsite-landing-row-item-description-content"> Monitor load and runtime performance. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/quick-source"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="quick-source" data-text="Quick source" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/quick-source"> Quick source </a> </h3> <div class="devsite-landing-row-item-description-content"> View and edit source files while having access to other panels. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/sensors"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="sensors" data-text="Sensors" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/sensors"> Sensors </a> </h3> <div class="devsite-landing-row-item-description-content"> Emulate device sensors. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/webaudio"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="webaudio" data-text="WebAudio" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/webaudio"> WebAudio </a> </h3> <div class="devsite-landing-row-item-description-content"> View WebAudio API metrics. </div> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/webauthn"> <div class="devsite-landing-row-item-icon-container" size="medium" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="webauthn" data-text="WebAuthn" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/webauthn"> WebAuthn </a> </h3> <div class="devsite-landing-row-item-description-content"> Emulate authenticators. </div> </div> </div> </div> </div> </div> </section> <section class="devsite-landing-row devsite-landing-row-2-up flex-grid" background="white" header-position="top" > <div class="devsite-landing-row-inner"> <header class="devsite-landing-row-header" > <div class="devsite-landing-row-header-text"> <h2 id="settings-reference" data-text="Settings reference" tabindex="0"> Settings reference </h2> </div> </header> <div class="devsite-landing-row-group"> <div class="devsite-landing-row-column"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="overview" data-text="Overview" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings"> Overview </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/preferences"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="preferences" data-text="Preferences" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/preferences"> Preferences </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/workspace"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="workspace" data-text="Workspace" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/workspace"> Workspace </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/ai-innovations"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="ai-innovations" data-text="AI innovations" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/ai-innovations"> AI innovations </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/experiments"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="experiments" data-text="Experiments" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/experiments"> Experiments </a> </h3> </div> </div> </div> </div> <div class="devsite-landing-row-column"> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/ignore-list"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="ignore-list" data-text="Ignore list" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/ignore-list"> Ignore list </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/devices"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="devices" data-text="Devices" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/devices"> Devices </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/throttling"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="throttling" data-text="Throttling" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/throttling"> Throttling </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/locations"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="locations" data-text="Locations" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/locations"> Locations </a> </h3> </div> </div> </div> <div class="devsite-landing-row-item devsite-landing-row-item-no-media" description-position="bottom" > <div class="devsite-landing-row-item-description" icon-position="left" > <a href="https://developer.chrome.com/docs/devtools/settings/shortcuts"> <div class="devsite-landing-row-item-icon-container" size="small" > <div class="devsite-landing-row-item-icon material-icons" aria-hidden="true"> article </div> </div> </a> <div class="devsite-landing-row-item-body"> <h3 id="shortcuts" data-text="Shortcuts" class="hide-from-toc no-link" tabindex="0"> <a href="https://developer.chrome.com/docs/devtools/settings/shortcuts"> Shortcuts </a> </h3> </div> </div> </div> </div> </div> </div> </section> </div> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-notification > </devsite-notification> <div class="devsite-content-data"> <template class="devsite-content-data-template"> [[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[],[]] </template> </div> </devsite-content> </main> <devsite-footer-promos class="devsite-footer"> </devsite-footer-promos> <devsite-footer-linkboxes class="devsite-footer"> <nav class="devsite-footer-linkboxes nocontent" aria-label="Footer links"> <ul class="devsite-footer-linkboxes-list"> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Contribute</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="https://issuetracker.google.com/issues/new?component=1400036&template=1897236" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > File a bug </a> </li> <li class="devsite-footer-linkbox-item"> <a href="https://issuetracker.google.com/issues?q=status:open%20componentid:1400036&s=created_time:desc" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > See open issues </a> </li> </ul> </li> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Related content</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="https://blog.chromium.org/" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Chromium updates </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/case-studies" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > Case studies </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/deprecated" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > Archive </a> </li> <li class="devsite-footer-linkbox-item"> <a href="https://web.dev/shows" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > Podcasts & shows </a> </li> </ul> </li> <li class="devsite-footer-linkbox "> <h3 class="devsite-footer-linkbox-heading no-link">Follow</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <a href="https://twitter.com/ChromiumDev" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > @ChromiumDev on X </a> </li> <li class="devsite-footer-linkbox-item"> <a href="https://www.youtube.com/user/ChromeDevelopers" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 2)" > YouTube </a> </li> <li class="devsite-footer-linkbox-item"> <a href="https://www.linkedin.com/showcase/chrome-for-developers" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 3)" > Chrome for Developers on LinkedIn </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/static/blog/feed.xml" class="devsite-footer-linkbox-link 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