# Extension Inspector

> Inspect Firefox and Chrome extensions with tim-we.github.io/web-ext-inspector

Canonical page: [https://chrome-stats.com/d/extension-inspector](https://chrome-stats.com/d/extension-inspector)

## Overview

- **ID:** `extension-inspector`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Tim Weißenfels
- **Category:** web-development,privacy-security
- **Daily users:** 105
- **Weekly downloads:** 4
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.3.0
- **Last updated:** 2025-02-16
- **First published:** 2021-05-31
- **Size:** 41 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/extension-inspector/)
- **Website:** [https://github.com/tim-we/web-ext-inspector](https://github.com/tim-we/web-ext-inspector)

## Description

Extension Inspector is a powerful Chrome extension that lets you inspect the source code and assets of browser extensions for Firefox and Chromium-based browsers. By adding a convenient page action button on web extension store pages such as addons.mozilla.org (AMO) and the Chrome Web Store (CWS), it enables developers and curious users to quickly analyze and review extension contents without leaving the store page.

Ideal for developers and security-conscious users, Extension Inspector streamlines the process of checking extensions for transparency and integrity. It supports both Firefox and Chrome extensions, providing a seamless cross-browser inspection experience.

## Rankings

- #11,355 — Overall
- #93 — insert
- #112 — inject
- #144 — extension
- #185 — extension guard
- #190 — extention

## Permissions and access

### Permissions

- `activeTab`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- 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/extension-inspector)