Chrome Extension To An Exe File !

I want to know how we can make a exe file which installs chrome extension

I have all the file .crx for chrome extension

.xpi for firefox.

I am trying to make a installer which will install all browser addon .

You'll need to open chrome's app manifest file (the one that holds all the extension information), drop the extension in the correct folder, append your extensions JSON object data to said manifest file, then save/pack everything back up again. You'll need to have Chrome closed during this process, btw.

Will you please tell me in detail.

I tried making in NSIS and trying...

I can help you with NSIS, it's simple in use, all what you need to do is write the script which should extracts files from you .crx and .xpi to folders in Chrome/profiles/default.., Firefox/..