# CSS/JS Inject

> Inject your custom CSS/JS to any page. WARNING: adding styling and script to a page can break its functionality and make it unsafe and break terms so use on your own risk and with good judgment preferably on your own sites.

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

## Overview

- **ID:** `css-js-inject`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Freiholtz
- **Category:** appearance
- **Daily users:** 51
- **Weekly downloads:** 4
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 0.1.1
- **Last updated:** 2025-04-01
- **First published:** 2025-02-04
- **Size:** 120 KB
- **Data as of:** 2026-09-04
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/css-js-inject/)

## Description

I could not find any newer injector so I made this with AI.  The latest version adds ability to overview all sites where you have injections and activate/deactivate them. So you eg. can't lock yourself out from a site... like I did 🤦🏻‍♂️😂.

## Rankings

- #15,824 — Overall
- #2 — inject
- #41 — deactivate
- #134 — insert

## Permissions and access

### Permissions

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

### Content script matches

- `<all_urls>`

## 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 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/css-js-inject)