Chrome extension source 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 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: https://github.com/Rob–W/crxviewer
Online demo: https://robwu.nl/crxviewer/
Contact: [email protected]

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.
– 1.6: Improved search highlighting & also search in beautified content.
– 1.6.2: Configurable “primary action on click”, open new tab next to current tab.
– 1.6.4: Support the new CRX3 Chrome extension file format (#62).
– 1.6.6: Permalink support, Firefox add-on finder.
– 1.6.7: Fix broken extension due to bug with storage access and NativeCrxBindings.
– 1.6.8: Support CRX3 file format from CWS; support some other AMO domains.
– 1.6.9: Add option to add the context menu item to more links (#69), open new tabs via context menu next to current tab.
– 1.6.10: Improve syntax highlighting (perf, highlighting of WebAssembly source), show sum of file sizes.
– 1.6.11: Add “Extension ID” row at Analysis of manifest.json, improve CRX3 public key detection, improve zip fallback detection.