JavaScript Switcher

Name: JavaScript Switcher
Rating: 4.2105 (57 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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Features & Capabilities

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.

User Growth & Download Statistics

Add-on Privacy & Security 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:

Size:

50.49KB

Email:

sr*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 1,058 ▼ 4

Other rankings

#115 in Web Development ▼ 2

#161 in Appearance

#227 in Privacy & Security ▼ 5

#4 in javascript keyword 45

#8 in kitchen keyword 2 ▲ 1

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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:

meetDeveloper

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/quick-js-switcher/

Email:

sr*****@gmail.com

User Reviews

JavaScript Switcher is praised for its simple, quick toggle and the ability to set a default JS state. It also preserves noscript blocks by injecting them into the DOM, helping testing and site behavior control. However, reviewers note UI visibility issues (button missing or not immediately accessible) and mixed expectations about the default state, which can affect discoverability and initial usage.

Pros

Simple and reliable: a lightweight solution that quickly enables/disables JavaScript.
One-click toggle without opening settings.
Configurable default status: you can set the default JS state to on or off.
Preserves noscript behavior by injecting noscript content into the DOM.
Effective at taming websites, reducing JavaScript noise on many sites.

Cons

UI button not reliably visible or accessible (toolbar icon or context menu may be missing).
Button may only appear after visiting a page, making discovery difficult.
Conflicting expectations about the default JS state (some want default-on, others expect default-off).

Recent reviews

by Mo*****, 2026-05-24

How to enable it for all websites?

by Lu*****, 2026-04-07

by ti*****, 2025-12-06

View all user reviews ›

Is JavaScript Switcher 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.

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 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.

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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