NoScript is a free, open-source browser extension that lets users control which websites can run JavaScript and other active content.
The extension offers per-site control over active content, and is free and open source. Ratings are available on Mozilla Add-ons and the Chrome Web Store, but no recurring review themes were assessed.
This profile combines documented product information and independent evidence where available. It is not a hands-on test unless TechZella explicitly identifies one.
A quick way to understand who this product may suit, where its limits matter, and which facts are most relevant before you compare alternatives.
People who want granular, site-by-site control over JavaScript and other active browser content, and can manage site permissions when pages need scripts to work.
People seeking a set-and-forget privacy tool may find the permission decisions and occasional need to adjust site settings inconvenient, and should evaluate alternatives such as uBlock Origin instead.
Chrome, Chrome extension, Firefox, Firefox Extension, Microsoft Edge
8.0/10
NoScript is a free, open-source browser extension developed by Giorgio Maone. It gives users site-level control over whether JavaScript and other active content can run.
Its core workflow is to allow active content on trusted sites while restricting it elsewhere. This can help reduce exposure to malicious scripts, but sites that rely on blocked content may require permission changes.
These are the product-specific differences that may matter when deciding whether the software fits your workflow. They are based on documented evidence rather than a universal ranking.
These are documented constraints or practical friction points that may matter before you adopt the product.
The browser may show a debugging notification, which can surprise users and prompt questions about extension permissions.
Evidence source ↗Users may need to reapply site-specific permissions after closing the browser.
Evidence source ↗For security-sensitive software, TechZella focuses on documented architecture, authentication, data handling, deployment and privacy details that can affect a buying decision. This is product research, not an independent security audit.
| Data collection | Published policy says the add-on does not collect user data; user-triggered Site Info sends a site domain for its lookup |
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The Mozilla Add-ons privacy-policy page states this, while noting a user-triggered Site Info query sends a domain to NoScript’s site.
Source ↗Security claims are presented only when supported by documented sources. The presence of this section does not constitute a penetration test, certification or independent security audit.
Free and open-source browser extension. Donations are accepted; no paid subscription or trial was found.
Check current pricing →Pricing may change. Verify current plans on the vendor's website.
uBlock Origin is a related browser privacy and content-blocking extension. Its focus includes filter-based network blocking, while NoScript centers on user-managed permissions for active content. These tools have overlapping but distinct approaches, so compare their controls against the sites and browser you use.
| License | GNU General Public License v2.0 only (Mozilla Add-ons listing) |
|---|---|
| Pricing | Free; donations accepted |
| API | No public product API found |
| Integrations | Browser extension; no separate business integrations documented |
| Free trial | Not applicable; free software |
| Firefox compatibility | Official download page lists Firefox desktop and mobile |
| Chromium compatibility | Official download page lists Chromium-based browsers including Chrome, Edge, Brave, and Vivaldi |
| Data collection | Published policy says the add-on does not collect user data; user-triggered Site Info sends a site domain for its lookup |
Verified installation, hosting, administration, or environment details that can affect implementation.
| Installation or hosting | Install as a browser extension from Mozilla Add-ons or the Chrome Web Store; NoScript is also included in Tor Browser. Source ↗ |
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A proprietary editorial score based on product capabilities, usability, value, performance, support and user sentiment evidence.
The extension offers per-site control over active content, and is free and open source. Ratings are available on Mozilla Add-ons and the Chrome Web Store, but no recurring review themes were assessed.
Methodology v1.0. The assessment weighs feature coverage (25%), ease of use (15%), value for money (20%), performance (15%), support (10%) and user sentiment (15%), using researched product evidence and verified review evidence where available. It is a TechZella editorial assessment, not a direct user-review average.
Key claims are linked to the sources used to verify them. This evidence record is separate from third-party user ratings.
TechZella evaluates software using documented product capabilities, pricing information, usability and value considerations, independent user evidence where available, and competitive context. The assessment is an editorial review, not a hands-on test unless one is explicitly identified. Our editorial assessment is based on 4 documented sources.
The official site describes NoScript as free, open-source software.
View source ↗Verified 2026-10-05The official product description and Firefox listing describe user-selected site trust and active-content controls.
View source ↗Verified 2026-10-05The official download page lists Firefox and Chromium browser installations, including Chrome, Edge, Brave, and Vivaldi.
View source ↗Verified 2026-10-05The Mozilla Add-ons privacy-policy page states this, while noting a user-triggered Site Info query sends a domain to NoScript’s site.
View source ↗Verified 2026-10-05NoScript’s FAQ explains that Chromium limitations require debugger use for certain web-worker controls.
View source ↗Verified 2026-10-05No reviews yet. Be the first to share your experience.
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Is NoScript free? Yes. The official site describes it as free, open-source software.
Which browsers does it support? Official installation information lists Firefox and Chromium-based browsers, including Chrome, Edge, Brave, and Vivaldi. It is also included in Tor Browser.
Does NoScript have an API or business integrations? No public product API or business-integration catalog was found in the reviewed materials. It is distributed as a browser extension.
Does it offer a free trial? A trial is not applicable to the free extension; no separate paid plan was found.
Why can sites behave differently with NoScript enabled? The extension restricts active content by site. Users may need to allow the relevant site or domain for a page feature to work.
