CRX Viewer

View source code of Chrome extensions, Firefox addons or Opera extensions (crx/nex/xpi) from the Chrome web store and elsewhere.

View the source code of any Chrome extension in the Chrome Web store without installing it.

Features:

• Button at the Chrome Web store
• Download extension as zip file
• View source
• Configurable via context menu on button: Set one-click action via "primary action on click".
• View source:
• File name/type filter
• Search in the file content (literal or regexp)
• Automatic beautification (formatting) of code
• Syntax highlighting
• Show hashes (md5, sha1, sha256, sha384, sha512) of individual files
• Image preview
• View embedded zip files
• View any zip file by URL or file chooser
• View source of platform-specific extensions (such as Chrome OS-only extensions, or NaCl for a different architecture).
• Permalink to file and search result within a zip or extension file.
• Full support for incognito mode.
• Outputs public key and extension ID to the console.

Optional features (see options page):

• View source of Opera 15+ extensions, Edge extensions, Firefox addons or Thunderbird add-ons.
• "View extension source" contextmenu item on links to Chrome extensions
• View source of Chrome extensions outside the webstore. The View source button becomes visible when you select a CRX file for download.