# JavaScript Code Injector

> Execute custom JavaScript code for each site

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

## Overview

- **ID:** `javascript-code-injector`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** yo-wan
- **Category:** web-development
- **Daily users:** 2
- **Version:** 0.1
- **Last updated:** 2025-05-21
- **First published:** 2025-05-18
- **Size:** 11 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/javascript-code-injector/)

## Rankings

- #64,261 — Overall
- #121 — javascript

## Permissions and access

### Permissions

- `<all_urls>`
- `tabs`
- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate 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/javascript-code-injector)