Where to find extensions installed folder for Google Chrome on Mac?

The default locations of Chrome's profile directory are documented in the User Data Directory article on Googlesource.com. (When this article was written in 2013, the User Data Directory article was at chromium.org.) It says there,

To determine the user data directory for a running Chrome instance:

  1. Navigate to chrome://version
  2. Look for the Profile Path field. This gives the path to the profile directory.
  3. The user data directory is the parent of the profile directory.

For Chrome on Mac, it's

~/Library/Application\ Support/Google/Chrome/Default

The actual location can be different, by setting the --user-data-dir=path/to/directory flag.
If only one user is registered in Chrome, look in the Default/Extensions subdirectory. Otherwise, look in the <profile user name>/Extensions directory.

If that didn't help, you can always do a custom search.

  1. Go to chrome://extensions/, and find out the ID of an extension (32 lowercase letters) (if not done already, activate "Developer mode" first).

    Chrome UI showing extension ID with 32 letters

  2. Open the terminal, cd to the directory which is most likely a parent of your Chrome profile (if unsure, try ~ then /).

  3. Run find . -type d -iname "<EXTENSION ID HERE>", for example:

    find . -type d -iname jifpbeccnghkjeaalbbjmodiffmgedin
    

Result:

./Library/Application Support/Google/Chrome/Default/Extensions/jifpbeccnghkjeaalbbjmodiffmgedin


You can find all Chrome extensions in below location.

/Users/{mac_user}/Library/Application Support/Google/Chrome/Default/Extensions