If you want to download Google Chrome extensions, follow my steps.

Method 1:- Download from Google web store

If you want to download Google Chrome extension from official web store,

First find extension id.

Example URL :

https://clients2.google.com/service/update2/crx?response=redirect&x=id%3Daknpkdffaafgjchaibgeefbgmgeghloj%26uc

Method 2 :- Download from your computer

If you want to download Google Chrome extension which is already installed in your computer.

Then go to

C:UsersUsernameAppDataLocalGoogleChromeUser DataDefaultExtensions

download chrome extension

Method 3 :- Download using other browser.

Or use opera extension to download chrome extension.

You can unzip your chrome extension using winzip or winrar.