# Javascript Injector

> Inject any javascript code from Url in the content page (only for developers).

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

## Overview

- **ID:** `javascript-injector`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Mark parkins
- **Category:** web-development,appearance,other
- **Daily users:** 2
- **Version:** 0.0.3
- **Last updated:** 2021-07-07
- **First published:** 2021-07-06
- **Size:** 18 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/javascript-injector/)
- **Website:** [https://toolsonline.ml/](https://toolsonline.ml/)

## Description

Javascript Injector is a Firefox add-on that allows developers to inject javascript code from a URL into content pages. The injected code is saved in local storage and continues to run even after page reloads. Please note that this add-on is intended for developers only.

## Rankings

- #69,214 — Overall
- #111 — javascript

## Permissions and access

### Permissions

- `<all_urls>`
- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High 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 support email may not be valid

> 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-injector)