# Web Defuser

> Userscripts/styles on steroids. Keep YouTube or Instagram playing in the background, remove annoying nagging popups, add dark mode to websites, increase video volume past 100% and more!

Canonical page: [https://chrome-stats.com/d/web-defuser](https://chrome-stats.com/d/web-defuser)

## Overview

- **ID:** `web-defuser`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Gear
- **Category:** web-development,privacy-security,appearance
- **Daily users:** 4
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.1.0
- **Last updated:** 2025-06-10
- **First published:** 2025-03-11
- **Size:** 113 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/web-defuser/)

## Description

This extension's goal is to put control over web experience back into the hands of the user <strong>above all else</strong>. If you've ever been frustrated by some annoying website behavior or missing functionality, this extension will empower you to overcome that.

To achieve that, you can define rules to process any HTTP request as you see fit, including modifying headers, body and more.

Please check out the <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/fd480c74c75ce75dbf3f6288b04e077f003105f322800888d8029b5b0b3268bf/https%3A//gitlab.com/gear54/web-defuser" rel="nofollow">source code</a> repository (with <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/4f534bb22a83ed002cf0df1e1e6463575d35f2d92071a76d37248d84c5519ad5/https%3A//gitlab.com/gear54/web-defuser/-/snippets" rel="nofollow">snippets section</a> containing some example useful rules) and <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/230be5a78db1bb154b76f7c1a0848148f63e672020b7620d0a0647b51481c982/https%3A//codesandbox.io/p/sandbox/web-defuser-v0-4-0-rules-3y9z3p%3Ffile=%252Fsrc%252Findex.ts" rel="nofollow">interactive documentation on rules</a>.

## Rankings

- #47,869 — Overall
- #167 — defi

## Permissions and access

### Permissions

- `<all_urls>`
- `storage`
- `tabs`
- `scripting`
- `webRequest`
- `webRequestBlocking`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low 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).

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