Chrome extension source viewer is a free Chrome extension for viewing the source code of the most popular Chrome extensions and Firefox addons. It has been developed by a group of developers who strive to create a tool that can show you the source code of Chrome extensions and Firefox addons directly from the Chrome Web Store, without having to install the extension or its APK.

It's an all-in-one source code viewer, with features that include:

Find all files, including those which have been added manually by the developer and those that were automatically compiled. It's very easy to use, so even if you're a beginner, you can start using it right away. 

• Please note that the source code viewer is not official Google and is not affiliated with Google.