Option 1: Command-line download extension as zip and extract
extension_id=jifpbeccnghkjeaalbbjmodiffmgedin # change this ID curl -L -o "$extension_id.zip" "https://clients2.google.com/service/update2/crx?response=redirect&os=mac&arch=x86-64&nacl_arch=x86-64&prod=chromecrx&prodchannel=stable&prodversion=44.0.2403.130&x=id%3D$extension_id%26uc" unzip -d "$extension_id-source" "$extension_id.zip"
Thx to crxviewer for the magic download URL.
Option 2: Use the CRX Viewer extension
Option 3: View source of locally installed extension
- Find your Chrome local profile directory. Open
chrome://version/and find the "Profile Path:` field. Open that folder up.
- Open the
- All your extensions are here, with typically readable source.
Mapping between locally installed extension IDs and names
about:extensions, turn on Developer Mode and you'll see IDs under each entry
- Inside the
Extensions/folders, the manifest.json has a readable