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<!doctype html> <html dir="ltr" lang="en-US" class="no-js"> <head> <meta charset="utf-8" /> <title>WebAssembly Threads and Atomics | Can I use... Support tables for HTML5, CSS3, etc</title> <meta name="viewport" content="width=device-width"> <link rel="alternate" type="application/atom+xml" title="Can I Use updates" href="/feed"> <link href="//fonts.googleapis.com/css?family=Inconsolata&display=swap" rel="stylesheet"> <link rel="icon" href="/img/favicon-128.png" sizes="16x16 32x32 64x64 128x128" type="image/png"/> <link rel="apple-touch-icon" href="/img/favicon-128.png"> <link rel="stylesheet" href="/css/main.css?1730439433" media="all"> <link rel="stylesheet" href="/css/support-table.css?1730439433" media="all"> <link rel="stylesheet" href="/css/version-support.css?1730439434" media="all"> <link rel="stylesheet" data-theme="light" href="/css/theme-light.css?1730439433" media="all"> <link rel="stylesheet" data-theme="dark" href="/css/theme-dark.css?1730439433" media="(prefers-color-scheme: dark)"> <meta name="Description" content=""Can I use" provides up-to-date browser support tables for support of front-end web technologies on 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src="js-data/data.js?1732430797"></script><script defer src="js/bundle.js?1730439434"></script><script>window.initialFeatData = {id: "wasm-threads", data: "[{\"description\":\"An extension to WebAssembly adding shared memory and atomic memory 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support in browsers also includes passive data segments (from the bulk-memory extension)\",\"notes_by_num\":{},\"ucprefix\":false,\"parent\":\"wasm\",\"children\":null,\"keywords\":\"webassembly,threads,atomics,shared\",\"date_published\":\"2024-04-07\",\"chrome_id\":\"5724132452859904\",\"baseCategories\":[\"Other\"]}\n]"};</script></head> <body class="is-home"> <div id="main" class="ciu-main-wrap"> <header class="ciu-page-header"> <nav role="navigation" id="tab-container"> <ul class="ciu-page-header__primary-nav"> <li class="site-nav-item js-site-nav"><a href="/" data-route="home">Home</a></li> <li class="site-nav-item js-site-nav site-nav-item--news"><a href="/ciu/news" data-route="news">News</a></li> </ul> <ul class="ciu-page-header__secondary-nav"> <li class="site-nav-item js-site-nav site-nav-item--comparison"><a href="/ciu/comparison" data-route="comparison">Compare<span class="site-nav__extra-text"> browsers</span></a></li> <li class="site-nav-item js-site-nav site-nav-item--last "><a href="/ciu/about" data-route="about">About</a></li> </ul> <a class="news js-news" data-newstime="1712448000" href="https://caniuse.com/wasm-bigint,wasm-bulk-memory,wasm-multi-value,wasm-mutable-globals,wasm-nontrapping-fptoint,wasm-signext,wasm-simd,wasm-threads"><span class="date">April 7, 2024 -</span> 8 new features</a> </nav> <section class="ciu-search"> <div class="ciu-search__inner js-search"> <a href="/" class="ciu-search__label">Can I use</a> <form action="/" class="ciu-search__form"> <label class="ciu-search__a11y-label" for="feat_search">Search</label> <input type="text" class="ciu-search__input" id="feat_search" name="search" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false" autofocus value=""> <input type="hidden" name="static" value="1"> </form> ? <button class="options-toggle js-options-toggle"> <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" class="icon"> <path d="M16,8.87V7L15.74,7l-1.95-.64-.52-1.25,1-2.12L13,1.67l-.25.12-1.82.93L9.66,2.2,8.87,0H7.05L7,.26,6.33,2.21l-1.25.52L3,1.73,1.67,3l.12.25.93,1.82L2.2,6.34,0,7.13V8.95L.26,9l2,.64.52,1.25L1.73,13,3,14.33l.25-.12,1.82-.93,1.26.52L7.13,16H8.95L9,15.74l.64-2,1.26-.52,2.11,1L14.33,13l-.12-.25-.93-1.82.52-1.26ZM8,10.55A2.55,2.55,0,1,1,10.55,8,2.55,2.55,0,0,1,8,10.55Z"/> </svg> <span> Settings </span> </button> </div> <div class="search-result-info js-search-result-info hidden"></div> </section> </header> <main class="ciu-page-content js-content" data-static-id="feat"> <article class="feature-block feature-block--feature static-block"> <section> <div class="feature-heading"> <h3 class="feature-title"> WebAssembly Threads and Atomics </h3> <a href="https://webassembly.github.io/spec/core/" class="specification wd" title="W3C Working Draft"> <i class="icon icon-spec"></i> - WD </a> </div> <aside class="usage-container"> <ul> <li class="support-stats" data-usage-id="region.global"> <h4><span class="usage-title">Global usage</span></h4> <span class="support" title="Supported">96.32%</span> <span> + </span> <span class="partial" title="Partally Supported">0%</span> <span> = </span> <span class="total" title="Total">96.32%</span> </li> </ul> </aside> <div class="feature-description"><p>An extension to WebAssembly adding shared memory and atomic memory operations</p> </div><div class="support-container-wrap view-mode-normal" style="--container-width:1360px"><div class="support-container" style="min-width: 1360px"><div class="support-list last-era-3"><h4 class="browser-heading browser--chrome">Chrome</h4><div class="cell-filler" style="height: 0px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.22% - Not supported" ><span class="forced-colors-only">❌ </span>4 - 73<span class="a11y-only">: Not supported</span></li><li class="stat-cell y past" title="Global usage: 22.09% - Supported" ><span class="forced-colors-only">✅ </span>74 - 130<span class="a11y-only">: Supported</span></li><li class="stat-cell y current" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>131<span class="a11y-only">: Supported</span></li><li class="stat-cell y future" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>132 - 134<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--edge">Edge</h4><div class="cell-filler" style="height: 0px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.05% - Not supported" ><span class="forced-colors-only">❌ </span>12 - 18<span class="a11y-only">: Not supported</span></li><li class="stat-cell y past" title="Global usage: 4.99% - Supported" ><span class="forced-colors-only">✅ </span>79 - 130<span class="a11y-only">: Supported</span></li><li class="stat-cell y current" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>131<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-2"><h4 class="browser-heading browser--safari">Safari</h4><div class="cell-filler" style="height: 0px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.10% - Not supported" ><span class="forced-colors-only">❌ </span>3.1 - 14<span class="a11y-only">: Not supported</span></li><li class="stat-cell y past" title="Global usage: 3.12% - Supported" ><span class="forced-colors-only">✅ </span>14.1 - 18.0<span class="a11y-only">: Supported</span></li><li class="stat-cell y current" title="Global usage: 0.01% - Supported" ><span class="forced-colors-only">✅ </span>18.1<span class="a11y-only">: Supported</span></li><li class="stat-cell y future" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>18.2 - TP<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-3"><h4 class="browser-heading browser--firefox">Firefox</h4><div class="cell-filler" style="height: 0px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.11% - Not supported" ><span class="forced-colors-only">❌ </span>2 - 78<span class="a11y-only">: Not supported</span></li><li class="stat-cell y past" title="Global usage: 2.17% - Supported" ><span class="forced-colors-only">✅ </span>79 - 131<span class="a11y-only">: Supported</span></li><li class="stat-cell y current" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>132<span class="a11y-only">: Supported</span></li><li class="stat-cell y future" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>133 - 135<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--opera">Opera</h4><div class="cell-filler" style="height: 0px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.02% - Not supported" ><span class="forced-colors-only">❌ </span>9 - 60<span class="a11y-only">: Not supported</span></li><li class="stat-cell y past" title="Global usage: 0.99% - Supported" ><span class="forced-colors-only">✅ </span>62 - 113<span class="a11y-only">: Supported</span></li><li class="stat-cell y current" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>114<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--ie">IE</h4><div class="cell-filler" style="height: 30px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.08% - Not supported" ><span class="forced-colors-only">❌ </span>5.5 - 10<span class="a11y-only">: Not supported</span></li><li class="stat-cell n current" title="Global usage: 0.45% - Not supported" ><span class="forced-colors-only">❌ </span>11<span class="a11y-only">: Not supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--and_chr">Chrome for Android</h4><div class="cell-filler" style="height: 62px;"></div><ol><li class="stat-cell y current" title="Global usage: 43.66% - Supported" ><span class="forced-colors-only">✅ </span>131<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-1"><h4 class="browser-heading browser--ios_saf">Safari on iOS</h4><div class="cell-filler" style="height: 0px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.66% - Not supported" ><span class="forced-colors-only">❌ </span>3.2 - 14.4<span class="a11y-only">: Not supported</span></li><li class="stat-cell y past" title="Global usage: 13.93% - Supported" ><span class="forced-colors-only">✅ </span>14.5 - 18.0<span class="a11y-only">: Supported</span></li><li class="stat-cell y current" title="Global usage: 0.05% - Supported" ><span class="forced-colors-only">✅ </span>18.1<span class="a11y-only">: Supported</span></li><li class="stat-cell y future" title="Global usage: 0.00% - Supported" ><span class="forced-colors-only">✅ </span>18.2<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--samsung">Samsung Internet</h4><div class="cell-filler" style="height: 0px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.14% - Not supported" ><span class="forced-colors-only">❌ </span>4 - 10.1<span class="a11y-only">: Not supported</span></li><li class="stat-cell y past" title="Global usage: 0.46% - Supported" ><span class="forced-colors-only">✅ </span>11.1 - 25<span class="a11y-only">: Supported</span></li><li class="stat-cell y current" title="Global usage: 1.87% - Supported" ><span class="forced-colors-only">✅ </span>26<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--op_mini">Opera Mini</h4><div class="cell-filler" style="height: 62px;"></div><ol><li class="stat-cell n current" title="Global usage: 0.05% - Not supported" ><span class="forced-colors-only">❌ </span>all<span class="a11y-only">: Not supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--op_mob">Opera Mobile</h4><div class="cell-filler" style="height: 30px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.00% - Not supported" ><span class="forced-colors-only">❌ </span>10 - 12.1<span class="a11y-only">: Not supported</span></li><li class="stat-cell y current" title="Global usage: 1.15% - Supported" ><span class="forced-colors-only">✅ </span>80<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--and_uc">UC Browser for Android</h4><div class="cell-filler" style="height: 62px;"></div><ol><li class="stat-cell y current" title="Global usage: 1.23% - Supported" ><span class="forced-colors-only">✅ </span>15.5<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--android">Android Browser</h4><div class="cell-filler" style="height: 30px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.00% - Not supported" ><span class="forced-colors-only">❌ </span>2.1 - 4.4.4<span class="a11y-only">: Not supported</span></li><li class="stat-cell y current" title="Global usage: 0.27% - Supported" ><span class="forced-colors-only">✅ </span>131<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--and_ff">Firefox for Android</h4><div class="cell-filler" style="height: 62px;"></div><ol><li class="stat-cell y current" title="Global usage: 0.34% - Supported" ><span class="forced-colors-only">✅ </span>132<span class="a11y-only">: Supported</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--and_qq">QQ Browser</h4><div class="cell-filler" style="height: 62px;"></div><ol><li class="stat-cell u current" title="Global usage: 0.27% - Support unknown" ><span class="forced-colors-only">﹖ </span>14.9<span class="a11y-only">: Support unknown</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--baidu">Baidu Browser</h4><div class="cell-filler" style="height: 62px;"></div><ol><li class="stat-cell u current" title="Global usage: 0.00% - Support unknown" ><span class="forced-colors-only">﹖ </span>13.52<span class="a11y-only">: Support unknown</span></li></ol></div><div class="support-list last-era-0"><h4 class="browser-heading browser--kaios">KaiOS Browser</h4><div class="cell-filler" style="height: 30px;"></div><ol><li class="stat-cell n past" title="Global usage: 0.03% - Not supported" ><span class="forced-colors-only">❌ </span>2.5<span class="a11y-only">: Not supported</span></li><li class="stat-cell u current" title="Global usage: 0.00% - Support unknown" ><span class="forced-colors-only">﹖ </span>3<span class="a11y-only">: Support unknown</span></li></ol></div></div></div><div class="single-page__notes"><p>Threads support in browsers also includes passive data segments (from the bulk-memory extension)</p> </div><dl class="single-feat-resources"><dt>Resources:</dt><dd><a href="https://github.com/WebAssembly/threads/blob/main/proposals/threads/Overview.md">Feature extension overview</a></dd></dl> </section> </article> </main> <aside class="bottom-ad"> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:inline-block;width:728px;height:90px" data-ad-client="ca-pub-3347535679733957" data-ad-slot="1205929339"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </aside> <footer class="ciu-footer"> <div class="footer__section footer__primary"> <h3 class="footer__heading">Can I use...</h3> <p class="site-description">Browser support tables for modern web technologies</p> <p>Created & maintained by <a class="external-link" 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