1. Install the extension you want to the browser.
For example: Cookie-Editor
Chrome web store -> Search bar -> Input Cookie-Editor -> Click Cookie-Editor -> Click "Add to Chrome" -> Click "Add extension" -> Added successfully.
2. Find the plugin ID.
Chrome Extension management page -> Open "Developer mode" -> Cookie-Editor ID
3. Find the folder where the plugin is located.
The default location is:
C:\Users\"your user name"\AppData\Local\Google\Chrome\User
Data\Default\Extensions
You can also find the Chrome installation location first, and then click "User Data" -> "Default"-> "Extensions". Or copy and paste the plug-in ID on your computer to find its path.
4. Back to the Chrome Extension management page.
Click "Pack extension" -> Enter/select the extension root directory, the root directory of the Cookie-Editor extension is the folder named with the version number under the extension ID directory in the Extensions directory of Chrome just found. Its ID is 1.10.1_0. -> Click "Pack extension" -> Click "OK".
5. Packed Cookie-Editor in CRX format.
6. You can also save it to ZIP format, then unzip it.
7. XLogin browser batch-add Chrome plugins, please refer to :
"Batch-add Chrome plugins" Text Tutorial