JavaScript Switcher

Name: JavaScript Switcher
Rating: 4.3725 (51 reviews)
Author: meetDeveloper

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+.

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JavaScript Switcher is a lightweight browser extension that adds a handy toggle button directly in your URL bar, allowing you to enable or disable JavaScript individually on a per-domain basis. It remembers your preferences for future visits, giving you precise control over which sites run JavaScript. Originally named Quick JS Switcher, this extension defaults JavaScript to "on" due to popular demand. It's compatible with both Chrome and Firefox (version 57 and above). Note that on Firefox for Android, while the toggle button icon may not display due to current limitations, the functionality to enable or block JavaScript works as intended when toggled.

This extension is ideal for users seeking enhanced privacy, faster browsing, or better control over scripts running on websites. With its simple interface and domain-specific toggling, managing JavaScript behavior has never been easier.

Add-on Privacy & Security Productivity Developer Tools

By:

Daily users:

Rating:

Version:

1.4.0 Last updated: 2019-06-09

Version code:

4477366

Creation date:

2017-10-02

Risk:

Permissions:

<all_urls>
webRequest
webRequestBlocking
storage
tabs

Size:

50.49KB

Email:

sr*****@gmail.com

Full description:

Source:

Firefox Browser Add-ons

Updated:

19 hours ago

Ranking

# 1,028 ▼ 6

Other rankings

#109 in Web Development ▼ 1

#145 in Appearance ▼ 2

#217 in Privacy & Security ▼ 2

#4 in javascript keyword 44

#6 in kitchen keyword 1

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User reviews

Users appreciate the extension's ease of toggling JavaScript on/off and its ability to set default script states. It's considered superior to similar older add-ons and useful for developers due to integration of <noscript> tags. However, multiple users report difficulties locating the toggle icon in the toolbar or context menu, and express dissatisfaction that the default JavaScript state remains disabled contrary to the developer's promise. Additionally, Android compatibility could be improved, especially regarding visual feedback during toggling.

Pros

Quick and easy to toggle JavaScript on or off.
Allows setting the default state of JavaScript to on or off, providing convenience.
Better implementation compared to the older 'Javascript Control' add-on.
Integrates <noscript>-tags into the DOM, benefiting web developers testing no-script content.
Works well and is simple to use with one-click enable/disable functionality.

Cons

Does not show up reliably in the toolbar or context menu, making it hard to access.
Default behavior is disabled JavaScript, which some users find disappointing as it wasn't changed as promised.
Android version lacks visual feedback (no color change) in the address bar icon when toggling JavaScript.
Some users expected better compatibility or UI improvements on Android devices.

Recent reviews

by An*****, 2025-03-12

by Fi*****, 2024-11-10

by Fi*****, 2024-07-30

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Extension safety

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.

JavaScript Switcher requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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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 Browser Add-ons, 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.

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

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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