Chrome Extension Source Viewer

Chrome Extension Source Viewer 1.5 CRX for Chrome or Chromium

Free Developer Tools Extension

Published & copyrighted by Rob W

Editors' Words: 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 ... Read More > or Install Now >

Chrome Extension Source Viewer App / Specifications


Download CRX


189.17 KB

Chrome Store

Tech Specs

  • • Type: Browser Extension
  • • Version: 1.5
  • • Price: Freeware
  • • Offline: No
  • • File name: chrome-extension-source-viewer.crx

User Reviews

  • aggregateRating
  • • Rating average
  • 4.6 out of 5
  • • Rating users
  • 185

Download Count

  • • Total downloads
  • 160
  • • Current version downloads
  • 11
  • • Updated: February 13, 2017

Chrome Extension Source Viewer / Screenshots

Chrome Extension Source Viewer / Description

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

- Button at the Chrome Web store
- Download extension as zip file
- View source
- 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).
- 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 or Firefox addons.
- "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.

Source code:
Online demo:

Change log:
- 1.2.3:
Add "downloads" permission to make sure that the "Download" button always works as intended.
- 1.2.4:
Add extra parameters to the CRX URL to make sure that CRX files of extensions uploaded to the Chrome Web Store after July 2014 are correctly read.
- 1.2.6: Sync options, use optionsV2, show numeric progress instead of dots, updated JSBeautifier, restore font size.
- 1.2.7: Bugfixes (viewer height, checkbox filter).
- 1.3:
Support Firefox addons (also available as a Firefox addon!)
Search within files
Customize webstore download parameters
View embedded zip files and any zip file
- 1.3.1: Use correct URL for loading extension files.
- 1.3.2: Bugfix to allow unusual extension URLs to be opened again.
- 1.4: New syntax highlighter, improved search controls, improved word wrap.
- 1.5: Calculate hashes, add link to Github project page, bugfix for case-sensitive search.

Download Chrome Extension Source Viewer CRX for Chrome

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