# Custom JS Injector

> Attach custom JavaScript to websites with an enhanced editor

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

## Overview

- **ID:** `custom-js-injector`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** jojihatzz
- **Category:** web-development
- **Daily users:** 2
- **Version:** 0.0.1
- **Last updated:** 2024-07-16
- **First published:** 2024-07-15
- **Size:** 66 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/custom-js-injector/)

## Description

[ALPHA]
Please note that this add-on is currently in alpha stage and is not actively updated. While it provides useful functionality, there may be occasional bugs or issues.

Custom JS Injector allows users to attach custom JS code to websites they visit.

## Rankings

- #64,751 — Overall

## Permissions and access

### Permissions

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

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate 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 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/custom-js-injector)