NoScript is a Firefox extension that blocks JavaScript and other supported active content by default, then lets users allow it on selected trusted sites. Permissions can be changed from its status-bar icon or contextual menu, and the whitelist can be imported or exported. The extension also provides cross-site scripting protection and can help block clickjacking. Its controls are useful for users who want to limit what websites can run, though some pages may need permissions to work fully.
| Author: | Giorgio Maone |
| License: | Freeware |
| Price: | FREE |
| Released: | Dec 12, 2023 |
| File size: | 594 kB |
| Downloads: | 1812 |
| Keywords: | Firefox Extension, Windows 10, Giorgio Maone, script blocker for firefox, noscript firefox extension, Firefox, website content blocker, NoScript, x64 software, javascript site permissions, noscript whitelist, Extension, web security, browser xss protection, Java execution, script blocking, block Java |
| Author URL: | https://noscript.net/ |
NoScript is a browser extension for Firefox and other Mozilla-based browsers that gives users control over scripts and other active content on websites. It is intended for people who want to limit what sites can run by default, while allowing selected sites to work with the permissions they need. The extension uses a user-managed whitelist rather than permitting scripts from every site automatically.
When a page tries to run JavaScript or other supported active content, NoScript can block it unless the site has permission. Users can grant or revoke permissions through the extension’s status-bar icon or its contextual menu. This makes it possible to allow scripts for a trusted site, such as an online banking service, without granting the same access to unrelated pages. Permissions can also be revoked to restore stricter blocking and make blocked items visible again.
NoScript includes protection against cross-site scripting attacks and can help guard against clickjacking and other threats that exploit active content. Its restrictions can affect site features that depend on scripts, so users can selectively permit trusted domains when a page does not work as expected. The whitelist can be imported from a text file or exported as a backup, which is useful when moving settings or keeping a copy of approved domains.
The extension suits privacy- and security-conscious users who want more fine-grained control than a browser’s default site settings provide. It can be used to restrict scripts during everyday browsing, then grant access to particular sites as needed. The approach requires some ongoing decisions: unfamiliar domains may need to remain blocked, while trusted sites may require permission for interactive features to function.
NoScript is free and open source. It is an add-on for Firefox and other Mozilla-based browsers, rather than a standalone Windows application, and is available for Windows 10 and Windows 11. Support for individual content types depends on the browser and its capabilities; legacy plugin technologies such as Java and Flash are not available in many current browsers.