Feature Extensions - WebAssembly

<!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes" /> <meta property="og:title" content="Feature Extensions - WebAssembly" /> <meta property="og:description" content="WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications." /> <meta property="og:type" content="website" /> <meta property="og:url" content="https://webassembly.org/features/" /> <meta property="og:image" content="https://v1.screenshot.11ty.dev/https%3A%2F%2Fwebassembly.org%2Ffeatures%2F/opengraph/" /> <title>Feature Extensions - WebAssembly</title> <link rel="stylesheet" type="text/css" href="/css/custom.css" /> <noscript id="dark-mode-toggle-stylesheets"> <link rel="stylesheet" type="text/css" href="/css/light.css" media="(prefers-color-scheme: light)" /> <link rel="stylesheet" type="text/css" href="/css/dark.css" media="(prefers-color-scheme: dark)" /> <meta name="color-scheme" content="dark light" /> </noscript> <script src="/js/dark-mode-toggle-stylesheets-loader.min.js"></script> <script type="module" src="/js/dark-mode-toggle.min.mjs"></script> <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" /> <link rel="icon" href="/favicon.ico" type="image/x-icon" /> <link rel="alternate" type="application/atom+xml" title="WebAssembly News" href="/feed.xml"> </head> <body> <header class="page-section"> <div class="container-narrow"> <a class="site-logo" href="/" title="WebAssembly"></a> <nav class="site-nav"> <a class="site-nav-item btn" href="/">Overview</a> <a class="site-nav-item btn" href="/getting-started/developers-guide/" >Getting Started</a > <a class="site-nav-item btn" href="/specs">Specs</a> <a class="site-nav-item btn" href="/docs/faq/">Docs</a> <a class="site-nav-item btn" href="/features/">Feature Extensions</a> <a class="site-nav-item btn" href="/community/resources/" >Community</a > <a class="site-nav-item btn" href="/news/" >News</a > </nav> </div> </header> <section> <div class="container"><h1 id="feature-extensions">Feature Extensions</h1> <p>In November 2017, WebAssembly CG members representing four browsers, Chrome, Edge, Firefox, and WebKit, reached consensus that the design of the initial (MVP) WebAssembly API and binary format is complete to the extent that no further design work is possible without implementation experience and significant usage.</p> <p>After the initial release, WebAssembly has been gaining new features through the <a href="https://github.com/WebAssembly/meetings/blob/master/process/phases.md">standardization process</a>. For the complete list of current proposals and their respective stages, check out the <a href="https://github.com/WebAssembly/proposals"><code class="highlighter-rouge">WebAssembly/proposals</code> repo</a>.</p>  <template id="support-symbol-yes"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-label="Supported"><path class="svg-stroke" d="M10 15.2 19.2 6l1.4 1.4L10 18l-6.4-6.4L5 10.2Z" /></svg> </template> <template id="support-symbol-no"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-label="Not supported"><path class="svg-stroke" d="m12 10.6 5-5 1.4 1.5-5 4.9 5 5-1.4 1.4-5-5-5 5L5.7 17l5-5-5-5 1.5-1.4z" /></svg> </template> <template id="support-symbol-flag"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-label="Not supported by default"><path class="svg-stroke" d="M4 17v5H2V3h19.1a.5.5 0 0 1 .5.7L18 10l3.6 6.3a.5.5 0 0 1-.5.7H4zM4 5v10h14.6l-2.9-5 2.9-5H4z" /></svg> </template> <template id="support-symbol-unknown"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48" aria-label="Unknown"><path class="svg-stroke" d="M24 38a3 3 0 1 1 0 6 3 3 0 0 1 0-6zm0-34a12 12 0 0 1 12 12c0 4.3-1.5 6.6-5.3 9.8-3.9 3.3-4.7 4.8-4.7 8.2h-4c0-5 1.6-7.4 6-11.2 3.1-2.6 4-4 4-6.8a8 8 0 1 0-16 0v2h-4v-2A12 12 0 0 1 24 4z" /></svg> </template> <template id="support-symbol-loading"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-label="Loading"><circle fill="#ccc" cx="2" cy="12" r="2"><animate attributeName="opacity" dur="1s" values="0;1;0" repeatCount="indefinite" begin=".1" /></circle><circle fill="#ccc" cx="10" cy="12" r="2"><animate attributeName="opacity" dur="1s" values="0;1;0" repeatCount="indefinite" begin=".2" /></circle><circle fill="#ccc" cx="18" cy="12" r="2"><animate attributeName="opacity" dur="1s" values="0;1;0" repeatCount="indefinite" begin=".3" /></circle></svg> </template> <p>The table below aims to track implemented features in popular engines:</p> <div id="feature-support-scrollbox"> <table id="feature-support" aria-label="Status of implemented features in popular engines"></table> </div> <link rel="preload" href="/features.json" as="fetch" /> <script src="/features.js"></script> <link rel="modulepreload" href="https://unpkg.com/wasm-feature-detect@1/dist/esm/index.js?v=1" /> <link rel="modulepreload" href="https://cdn.jsdelivr.net/npm/@floating-ui/dom@1/+esm" /> <p>To detect supported features at runtime from JavaScript, check out the <a href="https://github.com/GoogleChromeLabs/wasm-feature-detect"><code class="highlighter-rouge">wasm-feature-detect</code> library</a>, which powers the “Your browser” column above.</p> </div> </section> <footer class="container"> <dark-mode-toggle dark="Light Mode" light="Dark Mode" permanent></dark-mode-toggle> </footer> </body> </html>

CINXE.COM

Feature Extensions - WebAssembly