![Extension source viewer](https://addons.mozilla.org/user-media/addon_icons/717/717783-64.png?modified=1693259020)
Extension source viewer
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).
What is Extension source viewer?
Stats
- tabs
- storage
- contextMenus
- downloads
- alarms
- cookies
- webRequest
- webRequestBlocking
- *://*/*
Chrome-Stats Rank
Summary
Adds a button to right of the address bar when a Firefox add-on or Chrome extension is detected. This also includes extensions for the Opera and Edge browsers and Thunderbird. This button shows two options:
- Download extension as zip file
- View source
The default action (showing the above options) can be changed via the "Primary action on click" menu that appears when you right-click on the extension button.
It also adds a context menu item on Firefox and Chrome extension links.
The "View source" option opens a new tab with a simple viewer, with the following features:
- Download-as-zip and download-as-crx at the upper-right corner.
- List of file names, and the option to filter files with a regular expression.
User reviews
User reviews summary
Pros
- Allows users to inspect the code of addons before installing
- Provides visibility into potential malicious behavior of addons
Cons
- Issues with compatibility on certain browsers
- Some users experienced problems with updates
Most mentioned
- Ability to see addon code before installing
Recent reviews
Safety
Risk impact
Extension source viewer is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Extension source viewer if you trust the publisher.
Risk likelihood
Extension source viewer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.