View source code of Firefox add-ons and Chrome extensions (crx/nex/xpi) from addons.mozilla.org, the Chrome Webstore and elsewhere, with CRX Viewer (crxviewer).

Extension source viewer - View Source Code of Add-ons
Extension source viewer is a versatile Firefox add-on that detects browser extensions and allows users to view and download their source code. Its features include code beautification, syntax highlighting, option to filter files, search functionality, image previews and more. It's also capable of downloading extensions from different platforms as well as viewing the contents of any URL or zip file.
Add-on stats
Manifest V2
By: Rob W
Rating: 4.79
(111)
Weekly download count: 55
Firefox on Android: No
Permissions:
- tabs
- storage
- contextMenus
- downloads
- alarms
- cookies
- webRequest
- webRequestBlocking
- *://*/*
Size: 247.50K
Email: ro*****@robwu.nl
URLs: Website
Full description: See detailed description
Ranking
Other platforms
Not available on Android
Not available on Edge
User reviews
Pros
- Allows users to inspect add-on code before installation
- Helps identify potentially malicious add-ons
- Convenient and practical tool for Firefox users
- Underrated and essential for security-conscious users
Cons
- Has issues with Waterfox Classic, particularly with the CRX icon and functionality
- Requires extra steps for installation and updates
Most mentioned
- Ability to view and inspect add-on source code
- Concerns about add-on security and potential malicious content
- Need for better endorsement or support from Mozilla
User reviews
by Rocket, 2025-02-25
by 退出中共邪教党团队避疫, 2025-02-10
Worked
by i hate youtube, 2025-01-20
Add-on safety
Risk impact
Extension source viewer requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Extension source viewer. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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