Script Blocker Ultimate (NoScript, Disable JS) Firefox

Script Blocker Ultimate (NoScript, Disable JS)

Best Script Blocker for Firefox. (Best in Performance, This addon does NOT track user activities same as others)
Script Blocker Ultimate (NoScript, Disable JS)
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Features & Capabilities

Script Blocker Ultimate is a powerful Chrome extension designed to enhance your browsing by blocking JavaScript and requests with ease, improving security and page load performance. It supports both desktop and Android platforms.

With flexible modes such as "Allow all," "Block all," "Block all but whitelist," and "Allow all but blacklist," users have complete control over script execution. The extension also features a robust request blocker to selectively block scripts, images, or videos, helping to eliminate ads and enhance privacy. Default blocking includes Google Analytics and Adsense scripts, which can be customized.

The use of wildcards in whitelisting and blacklisting domains makes configuration simple and effective. Script Blocker Ultimate respects user privacy and does not track activity, setting it apart from other script blockers. Regular webpage issues caused by blocking scripts can be resolved via the whitelist feature, making it user-friendly without compromising security.

For feedback or support, users can contact the developer directly via email. Enjoy a smoother, safer browsing experience with Script Blocker Ultimate!

User Growth & Download Statistics

Manifest V2 Add-on Privacy & Security
By:
Mojtaba Daneshi
Daily users:
2,323 -1
Rating:
4.63
(35)
Version:
4.2.1 Last updated: 2025-05-23
Version code:
5955044
Creation date:
2019-04-21
Risk:
High risk impact Moderate risk likelihood
Permissions:
Size:
48.21KB
Email:
Mo*****@Gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-15
Compare stats and ranking:

Ranking

# 1,988 ▼ 10
Other rankings
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Other platforms

Chrome
Script Blocker Ultimate (NoScript,Disable JS) (v5.1.0)
10,000 3.68 (25)

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Mojtaba Daneshi
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/script-blocker-ultimate/
Email:
Mo*****@Gmail.com
Website:
http://PopupBlocker.ir

User Reviews

Users praise Script Blocker Ultimate for being easy to use and lightweight, with effective, early blocking of scripts (including autoplay) and flexible white/blacklisting. It’s viewed as a simpler alternative to NoScript and privacy-friendly. However, common criticisms include the lack of logs and poor visibility of blocked/allowed URLs, plus requests for more granular controls (per-link rules, regex support). Some reviewers also want more proof of the claimed no-tracking behavior.
Pros
  • Easy to use and lightweight; designed to be simpler than NoScript.
  • Blocks scripts early in the page load, reducing script activity and improving page performance.
  • Flexible black/white lists with wildcard support for precise control.
  • Privacy-friendly operation with claims of not tracking user activity.
  • Effectively blocks intrusive scripts such as autoplay and random in-page scripts.
Cons
  • No built-in logs or a visible list of blocked/allowed domains, making auditing difficult.
  • Limited visibility of what will be allowed when whitelisting; it’s hard to quickly see which URLs are blocked or allowed.
  • Users frequently request more controls (per-link enable/disable, per-domain rules) and features like regex support, which are currently missing.
  • Some reviewers are skeptical about the privacy claims and would like verifiable proof of not tracking user activity.
Recent reviews
I like this Add-on, it's easier to use than NoScript, and seems to block sooner in the add-on chain, relieving work on privacy screens and such, and it catches non-existant domain names from running scripts. (which is a particular problem I've been having lately … random invented domains which seem to run directly in memory without going out to the router) @developers, I would like to use it *instead of* NoScript, but sadly I need to keep NoScript, because that lists the domains it blocked and allowed. I need that list to know what to add to the blacklist, and I don't get, even a log, from Script Blocker Ultimate. So I only know I've got my blacklist right for current threats because they don't show up in the NoScript list any more.
by bo*****, 2025-12-17
by Fi*****, 2024-12-16
This add-on is very handy to keep random scripts from running on webpages like autoplaying videos with loud audio.
by El*****, 2024-11-28
View all user reviews ›

Is Script Blocker Ultimate (NoScript, Disable JS) Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Script Blocker Ultimate (NoScript, Disable JS) requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Script Blocker Ultimate (NoScript, Disable JS) is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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