Storage Location for Unpacked Extensions

Extension engine does not explicitly change their location or add a reference to its local paths, they are left in the place where there are selected from in all Operating Systems.

Ex: If i load a unpacked Extension from E:\Chrome Extension the unpacked Extension is still in the same location

Storage Location for Packed Extensions

Navigate to chrome://version/ and look for Profile Path, it is your default directory and Extensions Folder is where all the extensions, apps, themes are stored

e.g:

Windows

If my Profile Path is %userprofile%\AppData\Local\Google\Chrome\User Data\Default then my storage directory is:

C:\Users\<Your_User_Name>\AppData\Local\Google\Chrome\User Data\Default\Extensions 

Linux

~/.config/google-chrome/Default/Extensions/

MacOS

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

Chromium

~/.config/chromium/Default/Extensions