Performance as a default with Next.js | Articles

<!doctype html> <html lang="en" dir="ltr"> <head> <meta name="google-signin-client-id" content="157101835696-ooapojlodmuabs2do2vuhhnf90bccmoi.apps.googleusercontent.com"> <meta name="google-signin-scope" content="profile email https://www.googleapis.com/auth/developerprofiles https://www.googleapis.com/auth/developerprofiles.award"> <meta property="og:site_name" content="web.dev"> <meta property="og:type" content="website"><meta name="theme-color" content="#3740ff"><meta charset="utf-8"> <meta content="IE=Edge" http-equiv="X-UA-Compatible"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="manifest" href="/_pwa/web/manifest.json" crossorigin="use-credentials"> <link rel="preconnect" href="//www.gstatic.com" crossorigin> <link rel="preconnect" href="//fonts.gstatic.com" crossorigin> <link rel="preconnect" href="//fonts.googleapis.com" crossorigin> <link rel="preconnect" href="//apis.google.com" crossorigin> <link rel="preconnect" href="//www.google-analytics.com" crossorigin><link rel="stylesheet" href="//fonts.googleapis.com/css?family=Google+Sans:400,500|Roboto:400,400italic,500,500italic,700,700italic|Roboto+Mono:400,500,700&display=swap"> <link rel="stylesheet" href="//fonts.googleapis.com/css2?family=Material+Icons&family=Material+Symbols+Outlined&display=block"><link rel="stylesheet" href="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/css/app.css"> <link rel="stylesheet" href="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/css/dark-theme.css" disabled> <link rel="shortcut icon" href="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/favicon.png"> <link rel="apple-touch-icon" href="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/touchicon-180.png"><link rel="canonical" href="https://web.dev/articles/performance-as-a-default-with-nextjs"><link rel="search" type="application/opensearchdescription+xml" title="web.dev" href="https://web.dev/s/opensearch.xml"> <link rel="alternate" hreflang="en" href="https://web.dev/articles/performance-as-a-default-with-nextjs" /><link rel="alternate" hreflang="x-default" href="https://web.dev/articles/performance-as-a-default-with-nextjs" /><link rel="alternate" hreflang="ar" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=ar" /><link rel="alternate" hreflang="bn" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=bn" /><link rel="alternate" hreflang="zh-Hans" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=zh-cn" /><link rel="alternate" hreflang="zh-Hant" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=zh-tw" /><link rel="alternate" hreflang="fa" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=fa" /><link rel="alternate" hreflang="fr" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=fr" /><link rel="alternate" hreflang="de" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=de" /><link rel="alternate" hreflang="he" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=he" /><link rel="alternate" hreflang="hi" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=hi" /><link rel="alternate" hreflang="id" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=id" /><link rel="alternate" hreflang="it" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=it" /><link rel="alternate" hreflang="ja" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=ja" /><link rel="alternate" hreflang="ko" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=ko" /><link rel="alternate" hreflang="pl" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=pl" /><link rel="alternate" hreflang="pt-BR" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=pt-br" /><link rel="alternate" hreflang="ru" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=ru" /><link rel="alternate" hreflang="es-419" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=es-419" /><link rel="alternate" hreflang="th" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=th" /><link rel="alternate" hreflang="tr" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=tr" /><link rel="alternate" hreflang="vi" href="https://web.dev/articles/performance-as-a-default-with-nextjs?hl=vi" /><link rel="alternate" hreflang="en-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs" /><link rel="alternate" hreflang="x-default" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs" /><link rel="alternate" hreflang="ar-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=ar" /><link rel="alternate" hreflang="bn-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=bn" /><link rel="alternate" hreflang="zh-Hans-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=zh-cn" /><link rel="alternate" hreflang="zh-Hant-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=zh-tw" /><link rel="alternate" hreflang="fa-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=fa" /><link rel="alternate" hreflang="fr-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=fr" /><link rel="alternate" hreflang="de-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=de" /><link rel="alternate" hreflang="he-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=he" /><link rel="alternate" hreflang="hi-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=hi" /><link rel="alternate" hreflang="id-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=id" /><link rel="alternate" hreflang="it-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=it" /><link rel="alternate" hreflang="ja-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=ja" /><link rel="alternate" hreflang="ko-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=ko" /><link rel="alternate" hreflang="pl-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=pl" /><link rel="alternate" hreflang="pt-BR-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=pt-br" /><link rel="alternate" hreflang="ru-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=ru" /><link rel="alternate" hreflang="es-419-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=es-419" /><link rel="alternate" hreflang="th-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=th" /><link rel="alternate" hreflang="tr-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=tr" /><link rel="alternate" hreflang="vi-cn" href="https://web.developers.google.cn/articles/performance-as-a-default-with-nextjs?hl=vi" /><title>Performance as a default with Next.js  |  Articles  |  web.dev</title> <meta property="og:title" content="Performance as a default with Next.js  |  Articles  |  web.dev"><meta property="og:url" content="https://web.dev/articles/performance-as-a-default-with-nextjs"><meta property="og:locale" content="en"><script type="application/ld+json"> { "@context": "https://schema.org", "@type": "Article", "dateModified": "2019-11-08", "headline": "Performance as a default with Next.js" } </script><script type="application/ld+json"> { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{ "@type": "ListItem", "position": 1, "name": "Articles", "item": "https://web.dev/articles" },{ "@type": "ListItem", "position": 2, "name": "Performance as a default with Next.js", "item": "https://web.dev/articles/performance-as-a-default-with-nextjs" }] } </script> <link rel="stylesheet" href="/extras.css"></head> <body class="" template="page" theme="web-theme" type="article" appearance layout="docs" display-toc pending> <devsite-progress type="indeterminate" id="app-progress"></devsite-progress> <a href="#main-content" class="skip-link button"> Skip to main content </a> <section class="devsite-wrapper"> <devsite-cookie-notification-bar></devsite-cookie-notification-bar><devsite-header role="banner"> <div class="devsite-header--inner nocontent"> <div class="devsite-top-logo-row-wrapper-wrapper"> <div class="devsite-top-logo-row-wrapper"> <div class="devsite-top-logo-row"> <button type="button" id="devsite-hamburger-menu" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Navigation menu button" visually-hidden aria-label="Open menu"> </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="webDev" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/lockup-dark-theme.svg" media="(prefers-color-scheme: dark)" class="devsite-dark-theme" alt="web.dev"> <img src="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/lockup.svg" class="devsite-site-logo" alt="web.dev"> </picture> </a> <span class="devsite-product-name"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item "> </li> </ul> </span> </div> <div class="devsite-top-logo-row-middle"> <div class="devsite-header-upper-tabs"> <devsite-tabs class="upper-tabs"> <nav class="devsite-tabs-wrapper" aria-label="Upper tabs"> <tab class="devsite-dropdown devsite-dropdown-full "> <button class="devsite-tabs-content devsite-tabs-dropdown-only gc-analytics-event devsite-icon devsite-icon-arrow-drop-down" track-type="nav" track-metadata-position="nav - resources" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Resources" track-name="resources" > Resources </button> <div class="devsite-tabs-dropdown" role="menu" aria-label="submenu" hidden> <div class="devsite-tabs-dropdown-content"> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section build-icon web-dev-subnav"> <li class="devsite-nav-title" role="heading" tooltip>Web Platform</li> <li class="devsite-nav-description">Dive into the web platform, at your pace. </li> <li class="devsite-nav-item"> <a href="https://web.dev/html" track-type="nav" track-metadata-eventdetail="https://web.dev/html" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="web platform" tooltip > <div class="devsite-nav-item-title"> HTML </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/css" track-type="nav" track-metadata-eventdetail="https://web.dev/css" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="web platform" tooltip > <div class="devsite-nav-item-title"> CSS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/javascript" track-type="nav" track-metadata-eventdetail="https://web.dev/javascript" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="web platform" tooltip > <div class="devsite-nav-item-title"> JavaScript </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section build-icon web-dev-subnav"> <li class="devsite-nav-title" role="heading" tooltip>User experience</li> <li class="devsite-nav-description">Learn how to build better user experiences. </li> <li class="devsite-nav-item"> <a href="https://web.dev/performance" track-type="nav" track-metadata-eventdetail="https://web.dev/performance" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="user experience" tooltip > <div class="devsite-nav-item-title"> Performance </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/accessibility" track-type="nav" track-metadata-eventdetail="https://web.dev/accessibility" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="user experience" tooltip > <div class="devsite-nav-item-title"> Accessibility </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/identity" track-type="nav" track-metadata-eventdetail="https://web.dev/identity" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="user experience" tooltip > <div class="devsite-nav-item-title"> Identity </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section productivity-icon web-dev-subnav"> <li class="devsite-nav-title" role="heading" tooltip>Learn</li> <li class="devsite-nav-description">Get up to speed on web development.</li> <li class="devsite-nav-item"> <a href="https://web.dev/learn/html" track-type="nav" track-metadata-eventdetail="https://web.dev/learn/html" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="learn" tooltip > <div class="devsite-nav-item-title"> Learn HTML </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/learn/css" track-type="nav" track-metadata-eventdetail="https://web.dev/learn/css" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="learn" tooltip > <div class="devsite-nav-item-title"> Learn CSS </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/learn/javascript" track-type="nav" track-metadata-eventdetail="https://web.dev/learn/javascript" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="learn" tooltip > <div class="devsite-nav-item-title"> Learn JavaScript </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/learn/performance" track-type="nav" track-metadata-eventdetail="https://web.dev/learn/performance" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="learn" tooltip > <div class="devsite-nav-item-title"> Learn Performance </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/learn/accessibility" track-type="nav" track-metadata-eventdetail="https://web.dev/learn/accessibility" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="learn" tooltip > <div class="devsite-nav-item-title"> Learn Accessibility </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/learn" track-type="nav" track-metadata-eventdetail="https://web.dev/learn" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="learn" tooltip > <div class="devsite-nav-item-title"> More courses </div> </a> </li> </ul> </div> <div class="devsite-tabs-dropdown-column "> <ul class="devsite-tabs-dropdown-section experience-icon web-dev-subnav"> <li class="devsite-nav-title" role="heading" tooltip>Additional resources</li> <li class="devsite-nav-description">Explore content collections, patterns, and more.</li> <li class="devsite-nav-item"> <a href="https://web.dev/explore/ai" track-type="nav" track-metadata-eventdetail="https://web.dev/explore/ai" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="additional resources" tooltip > <div class="devsite-nav-item-title"> AI and the web </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/explore" track-type="nav" track-metadata-eventdetail="https://web.dev/explore" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="additional resources" tooltip > <div class="devsite-nav-item-title"> Explore </div> </a> </li> <li class="devsite-nav-item"> <a href="https://pagespeed.web.dev/" track-type="nav" track-metadata-eventdetail="https://pagespeed.web.dev/" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="additional resources" tooltip > <div class="devsite-nav-item-title"> PageSpeed Insights </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/patterns" track-type="nav" track-metadata-eventdetail="https://web.dev/patterns" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="additional resources" tooltip > <div class="devsite-nav-item-title"> Patterns </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/shows" track-type="nav" track-metadata-eventdetail="https://web.dev/shows" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="additional resources" tooltip > <div class="devsite-nav-item-title"> Podcasts & shows </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/newsletter" track-type="nav" track-metadata-eventdetail="https://web.dev/newsletter" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="additional resources" tooltip > <div class="devsite-nav-item-title"> Developer Newsletter </div> </a> </li> <li class="devsite-nav-item"> <a href="https://web.dev/about" track-type="nav" track-metadata-eventdetail="https://web.dev/about" track-metadata-position="nav - resources" track-metadata-module="tertiary nav" track-metadata-module_headline="additional resources" tooltip > <div class="devsite-nav-item-title"> About web.dev </div> </a> </li> </ul> </div> </div> </div> </tab> <tab > <a href="https://web.dev/baseline" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://web.dev/baseline" track-type="nav" track-metadata-position="nav - baseline" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Baseline" track-name="baseline" > Baseline </a> </tab> <tab > <a href="https://web.dev/blog" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://web.dev/blog" track-type="nav" track-metadata-position="nav - blog" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Blog" track-name="blog" > Blog </a> </tab> <tab > <a href="https://web.dev/case-studies" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://web.dev/case-studies" track-type="nav" track-metadata-position="nav - case studies" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Case Studies" track-name="case studies" > Case Studies </a> </tab> </nav> </devsite-tabs> </div> <devsite-search enable-signin enable-search enable-suggestions enable-query-completion project-name="Articles" tenant-name="web.dev" > <form class="devsite-search-form" action="https://web.dev/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="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 devsite-header-no-lower-tabs "> <div class="devsite-header-background"> </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="webDev" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <source srcset="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/lockup-dark-theme.svg" media="(prefers-color-scheme: dark)" class="devsite-dark-theme" alt="web.dev"> <img src="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/lockup.svg" class="devsite-site-logo" alt="web.dev"> </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"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Resources" track-name="resources" > <span class="devsite-nav-text" tooltip > Resources </span> </span> <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: Resources" track-name="resources" > <span class="devsite-nav-text" tooltip menu="Resources"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Resources"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/baseline" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Baseline" track-name="baseline" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Baseline" track-type="globalNav" 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="/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="/case-studies" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Case Studies" track-name="case studies" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Case Studies" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Case Studies </span> </a> </li> </ul> </div> <div class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="Resources" 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 > Web Platform </span> </span> </li> <li class="devsite-nav-item"> <a href="/html" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: HTML" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > HTML </span> </a> </li> <li class="devsite-nav-item"> <a href="/css" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: CSS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > CSS </span> </a> </li> <li class="devsite-nav-item"> <a href="/javascript" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: JavaScript" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > JavaScript </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > User experience </span> </span> </li> <li class="devsite-nav-item"> <a href="/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="/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="/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 devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Learn </span> </span> </li> <li class="devsite-nav-item"> <a href="/learn/html" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Learn HTML" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Learn HTML </span> </a> </li> <li class="devsite-nav-item"> <a href="/learn/css" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Learn CSS" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Learn CSS </span> </a> </li> <li class="devsite-nav-item"> <a href="/learn/javascript" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Learn JavaScript" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Learn JavaScript </span> </a> </li> <li class="devsite-nav-item"> <a href="/learn/performance" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Learn Performance" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Learn Performance </span> </a> </li> <li class="devsite-nav-item"> <a href="/learn/accessibility" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Learn Accessibility" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Learn Accessibility </span> </a> </li> <li class="devsite-nav-item"> <a href="/learn" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: More courses" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > More courses </span> </a> </li> <li class="devsite-nav-item devsite-nav-heading"> <span class="devsite-nav-title" tooltip > <span class="devsite-nav-text" tooltip > Additional resources </span> </span> </li> <li class="devsite-nav-item"> <a href="/explore/ai" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: AI and the web" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > AI and the web </span> </a> </li> <li class="devsite-nav-item"> <a href="/explore" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Explore" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Explore </span> </a> </li> <li class="devsite-nav-item"> <a href="https://pagespeed.web.dev/" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: PageSpeed Insights" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > PageSpeed Insights </span> </a> </li> <li class="devsite-nav-item"> <a href="/patterns" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Patterns" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Patterns </span> </a> </li> <li class="devsite-nav-item"> <a href="/shows" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Podcasts &amp; shows" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Podcasts &amp; shows </span> </a> </li> <li class="devsite-nav-item"> <a href="/newsletter" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Developer Newsletter" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Developer Newsletter </span> </a> </li> <li class="devsite-nav-item"> <a href="/about" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: About web.dev" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > About web.dev </span> </a> </li> </ul> </div> </div> </nav> </devsite-book-nav> <section id="gc-wrapper"> <main role="main" id="main-content" class="devsite-main-content" has-sidebar > <div class="devsite-sidebar"> <div class="devsite-sidebar-content"> <devsite-toc class="devsite-nav" role="navigation" aria-label="On this page" depth="2" scrollbars ></devsite-toc> <devsite-recommendations-sidebar class="nocontent devsite-nav"> </devsite-recommendations-sidebar> </div> </div> <devsite-content> <article class="devsite-article"> <div class="devsite-article-meta nocontent" role="navigation"> <ul class="devsite-breadcrumb-list" aria-label="Breadcrumb"> <li class="devsite-breadcrumb-item "> <a href="https://web.dev/" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="1" track-type="globalNav" track-name="breadcrumb" track-metadata-position="1" track-metadata-eventdetail="" > Home </a> </li> <li class="devsite-breadcrumb-item "> <div class="devsite-breadcrumb-guillemet material-icons" aria-hidden="true"></div> <a href="https://web.dev/articles" class="devsite-breadcrumb-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Breadcrumbs" data-value="2" track-type="globalNav" track-name="breadcrumb" track-metadata-position="2" track-metadata-eventdetail="Articles" > Articles </a> </li> </ul> <devsite-thumb-rating position="header"> </devsite-thumb-rating> </div> <h1 class="devsite-page-title" tabindex="-1"> Performance as a default with Next.js </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom 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> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <div class="devsite-article-body clearfix "> <p>Next.js takes care of many optimizations in your React app so you don’t have to</p> <p> <div class="wd-authors" translate="no"> <div class="wd-author"> <img class="devsite-landing-row-item-icon" alt="Houssein Djirdeh" src="https://web.dev/images/authors/houssein.jpg" decoding="async" height="64" loading="lazy" width="64"> <div> <span> Houssein Djirdeh </span> <div class="wd-author__links"> <a href="https://twitter.com/hdjirdeh" aria-label="Houssein Djirdeh on X" rel="me"> <svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 300 271"> <title>X</title> <path fill="currentColor" d="m236 0h46l-101 115 118 156h-92.6l-72.5-94.8-83 94.8h-46l107-123-113-148h94.9l65.5 86.6zm-16.1 244h25.5l-165-218h-27.4z"></path> </svg></a> <a href="https://github.com/housseindjirdeh" aria-label="Houssein Djirdeh on GitHub" rel="me"> <svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 32.6 31.8"> <title>GitHub</title> <path d="M16.3 0C7.3 0 0 7.3 0 16.3c0 7.2 4.7 13.3 11.1 15.5.8.1 1.1-.4 1.1-.8v-2.8c-4.5 1-5.5-2.2-5.5-2.2-.7-1.9-1.8-2.4-1.8-2.4-1.5-1 .1-1 .1-1 1.6.1 2.5 1.7 2.5 1.7 1.5 2.5 3.8 1.8 4.7 1.4.1-1.1.6-1.8 1-2.2-3.6-.4-7.4-1.8-7.4-8.1 0-1.8.6-3.2 1.7-4.4-.1-.3-.7-2 .2-4.2 0 0 1.4-.4 4.5 1.7 1.3-.4 2.7-.5 4.1-.5 1.4 0 2.8.2 4.1.5 3.1-2.1 4.5-1.7 4.5-1.7.9 2.2.3 3.9.2 4.3 1 1.1 1.7 2.6 1.7 4.4 0 6.3-3.8 7.6-7.4 8 .6.5 1.1 1.5 1.1 3V31c0 .4.3.9 1.1.8 6.5-2.2 11.1-8.3 11.1-15.5C32.6 7.3 25.3 0 16.3 0z" fill-rule="evenodd" clip-rule="evenodd" fill="currentColor" /> </svg></a> <a href="https://glitch.com/@housseindjirdeh" aria-label="Houssein Djirdeh on Glitch" rel="me"> <svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 32 32"> <title>Glitch</title> <path fill="currentColor" d="M31.734 16.76c-.385-.198-4.536 1.865-5.427 1.693-2.24-.401-1.828-.667-4.839-1.359-1.203-.266-1.031-.109-1.297-.307-.172-.135-.344-.161-.599-.401 4-.719 6.026-1.693 6.734-1.839.76-.146 5.161 1.958 5.427 1.469.266-.495-.964-1.578-.401-3.031.589-1.464-.693-2.422.016-3.583.719-1.161.573-2.932.396-3.026-.396-.203-4.531 1.865-5.438 1.693-2.24-.417-1.828-.682-4.839-1.359-1.203-.271-1.031-.12-1.297-.323-.266-.198-.521-.13-1.036-.974-.521-.839-6.51-2.13-6.906-2.13-.828 0-2.375 2.13-2.375 2.13s-.599 0-2.401.094c-1.802.094-3.375.896-5.495 2.563C-.173 9.737.134 11.414.134 11.414s1.969.667 1.969 1.042c0 .359-1.729.802-1.729.802 1.12 1.411 4.583 2.745 5.464 2.745h.693c-1.438.281-2.823 1.068-4.583 2.438-2.12 1.698-1.813 3.375-1.813 3.375s1.969.667 1.969 1.026-1.729.802-1.729.802c1.12 1.427 4.583 2.76 5.464 2.76.844 0 1.427.026 2.495-.172.078.172.906 1.932 2.599 2.292 1.786.385 2.776.078 2.776.078s.094-.786-.323-1.573c1.547.161 3.307.203 5.026-.068 4.76-.719 7.12-1.865 7.896-2.01.76-.161 5.161 1.948 5.427 1.464.266-.505-.964-1.583-.385-3.036.573-1.469-.708-2.417 0-3.589.719-1.161.573-2.932.396-3.026zM4.615 11.828a1.446 1.446 0 0 1-.297-.042h-.052c-.026-.01-.052-.026-.078-.042l-.052-.01-.083-.042h-.052a.418.418 0 0 1-.068-.042l-.068-.052-.063-.036-.057-.042c-.021-.016-.042-.036-.063-.052l-.042-.042c-.026-.026-.047-.052-.068-.078l-.026-.031a1.954 1.954 0 0 1-.094-.104l-.026-.026c-.021-.036-.036-.073-.052-.109l-.026-.036-.057-.083c-.005-.021-.016-.042-.026-.063l-.026-.083-.026-.052-.016-.094-.01-.068c-.01-.026-.021-.052-.026-.078v-.068c.094.573.557 1.016 1.104 1.016.63 0 1.146-.573 1.146-1.297 0-.719-.505-1.307-1.146-1.307-.625 0-1.13.573-1.146 1.281 0-.932.667-1.693 1.495-1.693.823 0 1.479.745 1.479 1.682 0 .932-.667 1.693-1.479 1.693zm-1-1.265c0-.203.13-.365.318-.365s.307.161.307.365c0 .198-.135.344-.307.344s-.318-.161-.318-.344zm1 11.651a.712.712 0 0 1-.146 0l-.057-.016a.6.6 0 0 1-.094-.01l-.052-.016-.078-.026-.052-.026c-.031-.005-.057-.016-.083-.026l-.052-.026c-.021-.016-.047-.026-.068-.042L3.881 22l-.068-.052-.052-.042-.068-.052-.042-.042c-.031-.031-.063-.057-.089-.094a.671.671 0 0 1-.094-.12l-.031-.026c-.016-.031-.036-.063-.052-.094l-.026-.052c-.016-.026-.036-.052-.052-.078l-.026-.057-.026-.094-.026-.052-.031-.094-.01-.052c-.01-.031-.021-.063-.026-.094v-.068c.094.573.557 1.016 1.104 1.016.63 0 1.146-.573 1.146-1.292 0-.724-.505-1.297-1.146-1.297-.625 0-1.13.563-1.146 1.266 0-.932.667-1.693 1.495-1.693.823 0 1.479.76 1.479 1.682 0 .917-.667 1.693-1.479 1.693zm-1-1.266c0-.188.13-.349.318-.349s.307.161.307.349c0 .188-.135.344-.307.344s-.318-.146-.318-.344zm6.77-7.333v-.042l.042-.078.078-.297c.182-.583.344-1.172.479-1.771.161-.708.229-1.281.203-1.599-.016-.12-.031-.245-.052-.359a8.276 8.276 0 0 0-.521-1.724l-.083-.172-.026-.068c-.12-.266.057-.573.323-.557h.188l.531.036 2.104.109 1.151.078a28.24 28.24 0 0 1 10.573 2.828l.891.401c.172.078.266.307.188.505-.068.188-.266.292-.438.214l-.896-.401a27.695 27.695 0 0 0-10.359-2.786l-1.146-.068-.51-.026-1.599-.094h-.156c.188.51.339 1.031.453 1.562l.063.427c.042.453-.036 1.078-.224 1.88l-.203.823a23.62 23.62 0 0 1-.385 1.323l-.026.078v.042c-.068.188-.266.292-.438.214-.177-.068-.271-.292-.203-.495zm-2-6.349a.307.307 0 0 1 .479.026c.208.26.396.536.563.828.292.531.495 1.068.547 1.615.026.307 0 .651-.052 1.026a8.718 8.718 0 0 1-.271 1.104c-.094.313-.208.62-.333.922-.078.188-.276.266-.453.172-.172-.094-.24-.318-.156-.521l.026-.052.068-.172c.073-.198.146-.396.214-.599.099-.328.182-.661.24-1 .052-.307.063-.573.052-.802a3.47 3.47 0 0 0-.453-1.292 4.794 4.794 0 0 0-.443-.667l-.036-.042a.417.417 0 0 1 .026-.531zm1.537 13.869c-.063.38-.151.76-.271 1.13a9.549 9.549 0 0 1-.333.906c-.078.188-.276.266-.453.177-.172-.094-.24-.323-.156-.521l.026-.057.068-.172c.073-.198.146-.396.214-.599.099-.328.182-.661.24-1 .052-.307.063-.573.036-.802a3.365 3.365 0 0 0-.438-1.276 4.794 4.794 0 0 0-.443-.667l-.036-.057a.417.417 0 0 1 .026-.531.3.3 0 0 1 .464 0c.214.266.396.547.563.839.292.536.495 1.083.547 1.615.026.307 0 .651-.052 1.026zm16.531.157c-.068.188-.266.297-.438.214l-.896-.401a27.695 27.695 0 0 0-10.359-2.786l-1.135-.063h-.063l-.458-.026c-.583-.036-1.172-.068-1.755-.094l.036.078c.234.615.396 1.255.479 1.906.042.453-.036 1.078-.224 1.88l-.203.828a24.99 24.99 0 0 1-.385 1.333l-.026.068v.036c-.068.203-.266.297-.438.229a.42.42 0 0 1-.203-.51v-.026l.042-.078.078-.292c.182-.589.344-1.177.479-1.776.161-.708.229-1.281.203-1.599-.016-.12-.031-.24-.052-.359a7.996 7.996 0 0 0-.521-1.708l-.052-.12-.031-.068-.026-.063c-.12-.271.057-.578.323-.563h.188l.531.042 2.12.104 1.135.083a28.14 28.14 0 0 1 10.573 2.823l.891.401c.172.078.266.307.188.505z"/> </svg></a> <a href="https://houssein.me/" aria-label="Houssein Djirdeh's homepage" rel="me"> <svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 30 30"> <title>Homepage</title> <circle cx="14.5" cy="14.5" r="13.5" stroke-width="2" stroke-miterlimit="10" fill="none" stroke="currentColor" /> <ellipse cx="14.5" cy="14.5" rx="6.1" ry="13.5" stroke-width="2" stroke-miterlimit="10" fill="none" stroke="currentColor" /> <path d="M1.6 9.6h25.8M1.6 19.4h25.8" stroke-width="2" stroke-miterlimit="10" fill="none" stroke="currentColor" /> </svg></a> </div> </div> </div> </div></p> <p><a href="https://nextjs.org/">Next.js</a> is an opinionated <a href="https://reactjs.org/">React</a> framework with a number of performance optimizations baked in. The main idea behind the framework is to ensure applications start and remain as performant as possible by having these capabilities included by default.</p> <p>This introduction will briefly cover many features provided by the framework at a high level. The other guides in this collection will explore the features in more detail.</p> <aside class="note"><b>Note: </b> Chrome is collaborating with Next.js to improve the framework for any developer looking to build a fast, server-rendered React application. A number of newer optimizations were recently added such as <a href="https://github.com/zeit/next.js/issues/7563">module/nomodule support</a> and an <a href="https://github.com/zeit/next.js/issues/7631">improved granular chunking strategy</a>. </aside> <h2 id="what_will_you_learn" data-text="What will you learn?" tabindex="-1">What will you learn?</h2> <p>Although Next.js provides a number of performance optimizations by default, these guides aim to explain them in more detail and show you how you can use them to build a fast and performant experience.</p> <aside class="note"><b>Note: </b> This collection assumes that you have a basic knowledge of React. If not, check out <a href="https://reactjs.org/docs/getting-started.html">React's Getting Started page</a>. </aside> <p>There are many optimizations that can be added to React sites in general that would also work for applications built with Next.js. These will not be covered since the focus is on what Next.js specifically provides. To learn more about general React optimizations, check out our <a href="/react">React collection</a>.</p> <h2 id="how_is_nextjs_different_from_react" data-text="How is Next.js different from React?" tabindex="-1">How is Next.js different from React?</h2> <p>React is a library that makes it easier to build user interfaces using a component-based approach. Although powerful, React is specifically a UI library. Many developers include additional tooling such as a module bundler (<a href="https://webpack.js.org/">webpack</a> for example) and a transpiler (<a href="https://babeljs.io/">Babel</a> for example) to have a complete build toolchain.</p> <p>In the <a href="/react">React collection</a>, we took the approach of using <a href="https://create-react-app.dev/">Create React App</a> (CRA) to spin up React apps quickly. CRA takes the hassle out of setting up a React application by providing a complete build toolchain with a single command.</p> <p>Although there are a few default optimizations baked into CRA, the tool aims to provide a simple and straightforward setup. The choice is given to developers to decide whether to <a href="https://create-react-app.dev/docs/available-scripts#npm-run-eject">eject</a> and modify the configurations themselves.</p> <p>Next.js, which can also be used to create a new React application, takes a different approach. It immediately provides a number of common optimizations that many developers would like to have but find difficult to set up, such as:</p> <ul> <li>Server-side rendering</li> <li>Automatic code-splitting</li> <li>Route prefetching</li> <li>File-system routing</li> <li>CSS-in-JS styling (<a href="https://github.com/zeit/styled-jsx"><code translate="no" dir="ltr">styled-jsx</code></a>)</li> </ul> <h2 id="setting_up" data-text="Setting up" tabindex="-1">Setting up</h2> <p>To create a new Next.js application, run the following command:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Bash"><code translate="no" dir="ltr">npx<span class="devsite-syntax-w"> </span>create-next-app<span class="devsite-syntax-w"> </span>new-app </code></pre></devsite-code> <aside class="note"><b>Note: </b> <a href="https://medium.com/@maybekatz/introducing-npx-an-npm-package-runner-55f7d4bd282b">npx</a> is a package runner that is installed automatically with npm 5.2.0 or later. It simplifies quite a few processes involved with managing packages including running CLI commands (like <code translate="no" dir="ltr">create-next-app</code>) without having to install them globally on your machine. </aside> <p>Then navigate to the directory and start the development server:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded syntax="Bash"><code translate="no" dir="ltr"><span class="devsite-syntax-nb">cd</span><span class="devsite-syntax-w"> </span>new-app npm<span class="devsite-syntax-w"> </span>run<span class="devsite-syntax-w"> </span>dev </code></pre></devsite-code> <aside class="note"><b>Note: </b> You can also add Next.js to an existing React application. Check out <a href="https://nextjs.org/docs#manual-setup">Manual Setup</a> to learn how. </aside> <p>The following embed shows the directory structure of a new Next.js app.</p> <ul> <li>Click <strong>Remix to Edit</strong> to make the project editable.</li> <li>To preview the site, press <strong>View App</strong>. Then press <strong>Fullscreen</strong> <img src="/static/images/glitch/fullscreen.svg" alt="fullscreen" style="padding: 4px 8px; opacity: .5; border: 1px solid #c3c3c3; border-radius: 5px; margin-top: 0;" />.</li> </ul> <div class="wd-embed" style="height: 480px;"> <iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi" loading="lazy" src="https://glitch.com/embed/#!/embed/new-next-app?attributionHidden=true&sidebarCollapsed=true&path=index.html&previewSize=100" style="height: 100%; width: 100%; border: 0;" title="new-next-app on Glitch" ></iframe> </div> <p>Notice that a <code translate="no" dir="ltr">pages/</code> directory is created with a single file: <code translate="no" dir="ltr">index.jsx</code>. Next.js follows a file-system routing approach, where every page within this directory is served as a separate route. Creating a new file in this directory, such as <code translate="no" dir="ltr">about.js</code>, will automatically create a new route (<code translate="no" dir="ltr">/about</code>).</p> <p>Components can also be created and used like any other React application. A <code translate="no" dir="ltr">components/</code> directory has already been created with a single component, <code translate="no" dir="ltr">nav.js</code>, which is already imported in <code translate="no" dir="ltr">index.js</code>. By default, every import used in Next.js is only fetched when that page is loaded, providing the benefits of <strong>automated code-splitting</strong>.</p> <p>Moreover, every initial page load in Next.js is <strong>server-side rendered</strong>. If you open the Network panel in DevTools, you can see the initial request for the document returns a fully server-rendered page.</p> <figure> <img src="/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83.png" alt="The Preview tab of the Network panel shows that Next.js returns visually complete HTML when a page is requested." width="800" height="529" srcset="https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_36.png 36w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_48.png 48w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_72.png 72w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_96.png 96w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_480.png 480w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_720.png 720w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_856.png 856w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_960.png 960w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_1440.png 1440w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_1920.png 1920w,https://web.dev/static/articles/performance-as-a-default-with-nextjs/image/the-preview-tab-the-netw-152ca2d3f6a83_2880.png 2880w" sizes="(max-width: 840px) 100vw, 856px"> <figcaption class="wd-caption"> The Preview tab of the Network panel shows that Next.js returns visually complete HTML when a page is requested. </figcaption> </figure> <aside class="note"><b>Note: </b> Check out <a href="/articles/rendering-on-the-web#server-side_rendering">Server Rendering</a> to learn how server-side rendering often results in a better experience for users. </aside> <p>These are only a few of the many features provided by Next.js automatically. Many are customizable and can be modified for different use cases.</p> <h2 id="whats_next" data-text="What's next?" tabindex="-1">What's next?</h2> <p>Pun intended 😛</p> <p>Every other guide in this collection will explore a specific Next.js feature in detail:</p> <ul> <li><a href="/articles/route-prefetching-in-nextjs">Route prefetching</a> to speed up page navigations</li> <li><a href="/how-amp-can-guarantee-fastness-in-your-nextjs-app">Serving hybrid and AMP-only pages</a> for faster loading from search engines</li> <li><a href="/articles/code-splitting-with-dynamic-imports-in-nextjs">Code-splitting components with dynamic imports</a> to reduce JavaScript footprints</li> </ul> </div> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. For details, see the <a href="https://developers.google.com/site-policies">Google Developers Site Policies</a>. Java is a registered trademark of Oracle and/or its affiliates.</p> <p>Last updated 2019-11-08 UTC.</p> </devsite-content-footer> <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"]],["Last updated 2019-11-08 UTC."],[],[]] </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 wd-footer-promo"> <h3 class="devsite-footer-linkbox-heading no-link">web.dev</h3> <ul class="devsite-footer-linkbox-list"> <li class="devsite-footer-linkbox-item"> <h3 class="devsite-footer-linkbox-heading no-link"> web.dev </h3> <div class="devsite-footer-linkbox-description">We want to help you build beautiful, accessible, fast, and secure websites that work cross-browser, and for all of your users. This site is our home for content to help you on that journey, written by members of the Chrome team, and external experts.</div> </li> </ul> </li> <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=1400680&template=1857359" 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:1400680&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://developer.chrome.com/" class="devsite-footer-linkbox-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 1)" > Chrome for Developers </a> </li> <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 2)" > 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 3)" > Case studies </a> </li> <li class="devsite-footer-linkbox-item"> <a href="/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 gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Footer Link (index 4)" > RSS </a> </li> </ul> </li> </ul> </nav> </devsite-footer-linkboxes> <devsite-footer-utility class="devsite-footer"> <div class="devsite-footer-utility nocontent"> <nav class="devsite-footer-utility-links" aria-label="Utility links"> <ul class="devsite-footer-utility-list"> <li class="devsite-footer-utility-item "> <a class="devsite-footer-utility-link gc-analytics-event" href="//policies.google.com/terms" data-category="Site-Wide Custom Events" data-label="Footer Terms link" > Terms </a> </li> <li class="devsite-footer-utility-item "> <a class="devsite-footer-utility-link gc-analytics-event" href="//policies.google.com/privacy" data-category="Site-Wide Custom Events" data-label="Footer Privacy link" > Privacy </a> </li> <li class="devsite-footer-utility-item glue-cookie-notification-bar-control"> <a class="devsite-footer-utility-link gc-analytics-event" href="#" data-category="Site-Wide Custom Events" data-label="Footer Manage cookies link" aria-hidden="true" > Manage cookies </a> </li> </ul> <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="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> </nav> </div> </devsite-footer-utility> <devsite-panel></devsite-panel> </section></section> <devsite-sitemask></devsite-sitemask> <devsite-snackbar></devsite-snackbar> <devsite-tooltip ></devsite-tooltip> <devsite-heading-link></devsite-heading-link> <devsite-analytics> <script type="application/json" analytics>[]</script> <script type="application/json" tag-management>{"at": "True", "ga4": [], "ga4p": [], "gtm": [{"id": "GTM-MZWCJPP", "purpose": 0}], "parameters": {"internalUser": "False", "language": {"machineTranslated": "False", "requested": "en", "served": "en"}, "pageType": "article", "projectName": "Articles", "signedIn": "False", "tenant": "web", "recommendations": {"sourcePage": "", "sourceType": 0, "sourceRank": 0, "sourceIdenticalDescriptions": 0, "sourceTitleWords": 0, "sourceDescriptionWords": 0, "experiment": ""}, "experiment": {"ids": ""}}}</script> </devsite-analytics> <devsite-badger></devsite-badger> <script nonce="1dmSUkxOzz5SLg8WMyLi39i4DjtZS1"> (function(d,e,v,s,i,t,E){d['GoogleDevelopersObject']=i; t=e.createElement(v);t.async=1;t.src=s;E=e.getElementsByTagName(v)[0]; E.parentNode.insertBefore(t,E);})(window, document, 'script', 'https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/js/app_loader.js', '[27,"en",null,"/js/devsite_app_module.js","https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f","https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web","https://web-dot-devsite-v2-prod-3p.appspot.com",1,null,["/_pwa/web/manifest.json","https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/images/video-placeholder.svg","https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/favicon.png","https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/web/images/lockup.svg","https://fonts.googleapis.com/css?family=Google+Sans:400,500|Roboto:400,400italic,500,500italic,700,700italic|Roboto+Mono:400,500,700&display=swap"],1,null,[1,6,8,12,14,17,21,25,50,52,63,70,75,76,80,87,91,92,93,97,98,100,101,102,103,104,105,107,108,109,110,112,113,117,118,120,122,124,125,126,127,129,130,131,132,133,134,135,136,138,140,141,147,148,149,151,152,156,157,158,159,161,163,164,168,169,170,179,180,182,183,186,191,193,196],"AIzaSyCNm9YxQumEXwGJgTDjxoxXK6m1F-9720Q","AIzaSyCc76DZePGtoyUjqKrLdsMGk_ry7sljLbY","web.dev","AIzaSyB9bqgQ2t11WJsOX8qNsCQ6U-w91mmqF-I","AIzaSyAdYnStPdzjcJJtQ0mvIaeaMKj7_t6J_Fg",null,null,null,["CloudShell__cloud_code_overflow_menu","Profiles__enable_completequiz_endpoint","MiscFeatureFlags__developers_footer_image","Profiles__enable_awarding_url","MiscFeatureFlags__enable_project_variables","Cloud__enable_llm_concierge_chat","Cloud__enable_legacy_calculator_redirect","Experiments__reqs_query_experiments","MiscFeatureFlags__enable_explain_this_code","Profiles__enable_public_developer_profiles","Cloud__enable_cloud_shell","CloudShell__cloud_shell_button","Profiles__enable_release_notes_notifications","Search__enable_ai_eligibility_checks","Search__enable_dynamic_content_confidential_banner","MiscFeatureFlags__emergency_css","Cloud__enable_free_trial_server_call","Profiles__enable_developer_profiles_callout","Cloud__enable_cloud_facet_chat","MiscFeatureFlags__enable_firebase_utm","Cloud__enable_cloudx_ping","BookNav__enable_tenant_cache_key","TpcFeatures__enable_unmirrored_page_left_nav","Cloud__enable_cloud_shell_fte_user_flow","Search__enable_page_map","Profiles__require_profile_eligibility_for_signin","MiscFeatureFlags__developers_footer_dark_image","Profiles__enable_profile_collections","Profiles__enable_dashboard_curated_recommendations","TpcFeatures__enable_mirror_tenant_redirects","Search__enable_suggestions_from_borg","OnSwitch__enable","Cloud__enable_cloudx_experiment_ids","Profiles__enable_complete_playlist_endpoint","Profiles__enable_join_program_group_endpoint","Profiles__enable_page_saving","MiscFeatureFlags__enable_view_transitions","Profiles__enable_recognition_badges","Profiles__enable_completecodelab_endpoint","EngEduTelemetry__enable_engedu_telemetry","MiscFeatureFlags__enable_variable_operator","Analytics__enable_clearcut_logging","Cloud__enable_cloud_dlp_service","DevPro__enable_cloud_innovators_plus","Profiles__enable_stripe_subscription_management","DevPro__enable_developer_subscriptions","Concierge__enable_pushui"],null,null,"AIzaSyA58TaKli1DculwmAmbpzLVGuWc8eCQgQc","https://developerscontentserving-pa.googleapis.com","AIzaSyDWBU60w0P9hEkr29kkksYs8Z7gvZ8u_wc","https://developerscontentsearch-pa.googleapis.com",2,4,null,"https://developerprofiles-pa.googleapis.com",[27,"web","web.dev","web.dev",null,"web-dot-devsite-v2-prod-3p.appspot.com",null,null,[null,null,null,null,null,null,null,null,null,null,null,[1],null,null,null,null,null,null,[1],null,null,null,null,[1,null,1],[1,1,null,1,1]],null,[38,null,null,null,null,null,"/images/lockup.svg","/images/touchicon-180.png",null,null,null,1,1,null,null,null,null,null,null,null,null,2,null,null,null,"/images/lockup-dark-theme.svg",[]],[],null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,[[],[1,1]],[[null,null,null,null,null,["GTM-MZWCJPP"],null,null,null,null,null,[["GTM-MZWCJPP",1]],1]],null,4],null,null,1]') </script> <devsite-a11y-announce></devsite-a11y-announce> </body> </html>

CINXE.COM

Performance as a default with Next.js | Articles | web.dev