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<!doctype html> <html lang="en" class="__NoScript_ThemeWeb__ " > <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="keywords" content="Firefox; Chrome; Brave; Tor; security; XSS; Clickjacking; Script blocking; disable JavaScript; content blocking; safety; safe browsing; exploit; ransomware; attack; vulnerability; addon; add-on; extension; plugin;" /> <meta name="description" content="The NoScript Security Suite is a free extensions for Firefox, Chrome and other browsers, preemptively blocks malicious scripts and allows JavaScript and other potentially dangerous content only from sites you trust. Download it now for free!" /> <meta name="category" content="software,internet,development,downloads" /> <meta name="twitter:card" content="summary" /> <meta name="twitter:site" content="@noscript" /> <meta name="twitter:creator" content="@ma1" /> <meta name="twitter:title" content="What is it? - NoScript: Own Your Browser!" /> <meta name="twitter:description" content="The NoScript Security Suite is Free Software protecting Firefox (on Android, too!), Chrome, Edge, Brave and other web browsers. Install NoScript now!" /> <meta name="twitter:image" content="https://noscript.net/img/noscript-social.png?v=2" /> <meta property="og:type" content="website" /> <meta property="og:url" content="https://noscript.net/" /> <meta property="og:site" content="NoScript Security Suite" /> <meta property="og:title" content="What is it? - NoScript: Own Your Browser!" /> <meta property="og:description" content="The NoScript Security Suite is Free Software protecting Firefox (on Android, too!), Chrome, Edge, Brave and other web browsers. Install NoScript now!" /> <meta property="og:image" content="https://noscript.net/img/noscript-social.png?v=2" /> <meta property="og:image:alt" content="Screenshot of a browser configuring site permissions with NoScript" /> <meta name="theme-color" content="#ffffff"> <meta name="msapplication-TileColor" content="#da532c"> <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png"> <link rel="manifest" href="/site.webmanifest"> <link rel="mask-icon" href="/safari-pinned-tab.svg" color="#5bbad5"> <link rel="stylesheet" href="/theme.css?v=1742457801590" type="text/css" /> <script src="/js/darklight.js"></script> <title>What is it? - NoScript: block scripts and own your browser!</title> </head> <body> <a class="skip-to-content" href="#main-content">Skip to content.</a> <header> <h1>NoScript</h1> <h2>own YOUR browser!</h2> <a href="#main-menu" id="main-menu-toggle" class="menu-toggle" aria-label="Open main menu"> <span class="sr-only">Open main menu</span> <span class="btn-menu" aria-hidden="true">☰</span> </a> <a class="donate" href="/donate" title="NoScript is free software and can't exist without your help. Please donate now!">Donate</a> <button class="darklight" title="Toggle dark/light theme" aria-label="Toggle dark/light theme" aria-hidden="true"></button> </header> <nav id="main-menu" class="main-menu" aria-label="Main menu"> <a href="#main-menu-toggle" id="main-menu-close" class="menu-close" aria-label="Close main menu"> <span class="sr-only">Close main menu</span> <span class="btn-close" aria-hidden="true">✖</span> </a> <ul><li class="active"><a href="/">What is it?</a></li> <li><a href="/getit/">Get it!</a></li> <li><a href="/usage/">Usage</a></li> <li><a href="/community/">Community</a></li> <li><a href="/faq/">FAQ</a></li></ul> </nav> <a href="#main-menu-toggle" class="backdrop" tabindex="-1" aria-hidden="true" hidden></a> <main id="main-content"> <h2 id="title">What is it? </h2> <p>The <strong>NoScript Security Suite</strong> is Free Open Source Software (FOSS) providing extra protection for <a href="https://addons.mozilla.org/addon/noscript/" target="_blank">Firefox</a> (on Android, too!), <a href="https://chromewebstore.google.com/detail/noscript/doojmbjmlfjjnbmnoijecmcbfeoakpjm" target="_blank">Chrome</a>, Edge, Brave and other web browsers.</p> <p><a href="/getit"><strong>Install NoScript now!</strong></a></p> <figure class="screenshot"> <a id="screen-home" href="#screen-home"> <img src="/img/screenshots/home.png" alt="Working with trust levels in NoScript's popup UI"/> </a> <figcaption>NoScript in action</figcaption> <a class="ss-closer" href="#screen-home-closed"></a> </figure> <p>NoScript is a built-in key security component of the <a href="https://torproject.org" target="_blank"><strong>Tor Browser</strong></a>, the top anonymity tool defending millions against surveillance and censorship.</p> <p>This browser extension allows JavaScript and other potentially <strong>harmful content</strong> to be executed only by trusted web sites <strong>of your choice</strong> (e.g. your online bank).</p> <p>NoScript also provides the most powerful <strong>anti-XSS protection</strong> ever available in a browser.</p> <p>NoScript's unique <strong>pre-emptive script blocking</strong> approach prevents exploitation of security vulnerabilities (known, such as Meltdown or Spectre, and even not known yet!) with <strong>no functionality loss</strong>: you can enable JavaScript and other dynamic capabilities for <strong>sites you trust</strong> <a href="/usage">with a simple click</a>.</p> <p>Staying <strong>safe</strong> has never been so <strong>easy</strong>!</p> <p>Experts* will agree: <strong>the web is really safer with NoScript!</strong></p> <p>* <em>experts endorsing NoScript, among others: <strong>Edward Snowden</strong> (former NSA analyst and whistleblower against surveillance state); <strong>Window Snyder</strong> (former top security officer at Microsoft, Square, Inc., Apple, Fastly, Intel and Mozilla Corp.); <strong>Douglas Crockford</strong> (Javascript expert and creator of the JSON format); the <a href="https://isc.sans.edu/" target="_blank"><strong>Sans Internet Storm Center</strong></a></em></p> </main> <footer> <div class="copyright"> <p>© 2025 Giorgio Maone.</p> <p> <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"> <img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a> <br /> This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>. </p> </div> <div id="social-verification"> <a rel="me" href="https://mastodon.social/@noscript"></a> <a rel="me" href="https://todon.eu/@ma1"></a> </div> </footer> </body> </html>