I have a Question that does the application developed to publish on google web store needs different extensions for Mac and PC ?
If anyone knows the answer and give me some links for the documentation which describes the answer then that would be really helpful.
Thanks
This sounds like a question about how to get started in the Chrome Web Store and perhaps publishing your first extension or app.
The answer to your question is no, you will only need a single format. You upload a single file, a zip file, to your Chrome Web Store Developer Panel and it will be available for both Windows and Mac users for download/installation to their Chrome browsers.
Here is Google's Getting Started Guide: https://developer.chrome.com/extensions/getstarted