# JavaScript Toggle On and Off (WebExtension)

> Toggle JavaScript engine on and off the easy way

Canonical page: [https://chrome-stats.com/d/javascript-toggler](https://chrome-stats.com/d/javascript-toggler)

## Overview

- **ID:** `javascript-toggler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** tlintspr
- **Category:** web-development,privacy-security,other
- **Daily users:** 12,273
- **Weekly downloads:** 115
- **Rating:** 4.06 / 5 (125 ratings)
- **Version:** 0.2.4
- **Last updated:** 2020-11-30
- **First published:** 2017-01-10
- **Size:** 69 KB
- **Data as of:** 2026-09-04
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/javascript-toggler/)
- **Website:** [http://add0n.com/javascript-toggler.html](http://add0n.com/javascript-toggler.html)

## Description

The **JavaScript Toggle On and Off** Chrome extension offers a reliable and straightforward way to control JavaScript execution in your browser. It allows you to toggle the JavaScript engine on or off with a simple toolbar button or hotkey (default: Alt + Shift + L), providing fine-grained control over script execution.

This extension supports whitelisting domains, enabling selective JavaScript activation for trusted sites. It covers multiple JavaScript types including inline scripts, data URI scripts, external scripts, inline event handlers, "javascript:" URIs, `setTimeout` evaluations, and `document.write` executions. Designed as a WebExtension, it functions well in both normal and private browsing modes. For more information, bug reports, and testing your browser's JavaScript support, users are directed to the extension's official website and GitHub repository.

## Rankings

- #677 — Overall
- #55 — Web Development
- #89 — Other extensions
- #150 — Privacy & Security
- #2 — toggle
- #5 — javascript

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `contextMenus`
- `<all_urls>`
- `webRequest`
- `webRequestBlocking`
- `notifications`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has medium user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users praise the add‑on for its simplicity, quick one‑click toggle and handy toolbar button; many say it reliably works. Recurring issues include limitations in how JS is blocked (external-only or global toggling vs fine‑grained per‑site control), user confusion between Java and JavaScript, and several spammy/irrelevant reviews.

### Pros

- Simple, easy-to-use one-click JavaScript on/off toggle — fast to switch.
- Toolbar icon/button for quick access (users recommend pinning it to the toolbar).
- Reliable — multiple reviewers say it “just works” or call it an essential tool.

### Cons

- Limitations in how JavaScript is handled: reviewers report it may only block external scripts and/or acts as a global toggle rather than providing convenient per-site control.
- Several reviewers confuse Java with JavaScript, leading to misleading comments or expectations about what the add-on does.
- Many reviews are non-informative or appear spammy/repetitive (promotional messages), which reduces clarity of user feedback.

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Source: [Chrome-Stats](https://chrome-stats.com/d/javascript-toggler)