Merlin
JavaScript Switcher

JavaScript Switcher

A lightweight addon that adds a Toggle button in URL bar, for toggling JavaScript (on or off) individually per domain, and stores that for future visit. Works also with Firefox 57+.

What is JavaScript Switcher?
'JavaScript Switcher' is a lightweight Firefox extension. With a simple button in the URL bar, it enables users to control JavaScript settings individually for each domain. Your preferences are saved for future visits. Originally known as Quick JS Switcher, this add-on has adapted JavaScript Control and changed the default policy to enable JavaScript by default, based on user feedback.
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Merlin
Stats
Rating: 4.35 (49)
Version: 1.4.0 (Last updated: 2019-06-09)
Creation date: 2017-10-02
Weekly download count: 123
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • <all_urls>
  • webRequest
  • webRequestBlocking
  • storage
  • tabs
Size: 51.70K
Stats date:

Chrome-Stats Rank

# 997 ▼ 1
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Other platforms

Not available on Chrome
Not available on Edge
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Merlin
Summary
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Earlier Known as Quick JS Switcher. Adds A Switch button in URL bar, for switching JavaScript individually per domain and stores that for future.

By default JavaScript is enabled on pages due to so many people wanting that.

I have forked code of extension JavaScript Control and made changes to default policy, to enable JavaScript by default, due to popular requests.

  • Due to current limitations on Firefox on Android (no support for pageAction.setIcon yet), the URL Bar icon doesn't change or show up as expected. JavaScript is however blocked as expected by default, and enabled with a click *
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Quick and easy to disable/enable JavaScript
  • Option to set the default status of scripts to 'on' or 'off'
  • Looks for <noscript>-tags and adds them to the DOM, which is helpful for developers
  • Convenient one-click enable/disable instead of navigating through settings
Cons
  • Does not show up in the toolbar or in a right click, affecting usability
  • Default policy is to have JavaScript disabled, which contradicts developer's earlier statement
  • Lack of color change in the address bar icon on Android, reducing visibility of the add-on's status
Most mentioned
  • Quick and easy to enable/disable JavaScript
  • Default policy (Javascript enabled or disabled by default)
  • Visibility and accessibility of the add-on (icon in toolbar, color change indicators)
Recent reviews
Quick and easy to disable/enable JS.
by JJ, 2024-01-08
View all user reviews
Safety
Risk impact

JavaScript Switcher is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install JavaScript Switcher if you trust the publisher.

Risk likelihood

JavaScript Switcher has earned a fairly good reputation and likely can be trusted.

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Screenshots
JavaScript Switcher JavaScript Switcher