Can you share details on how you implemented paid license keys in a browser extension? I have an extension already written that is like to do the same with. And will the chrome and Firefox stores still host it?

This extension can be used for free without paying unfortunately by changing the code. I don't think there is any solid way of preventing that.

I’m not interested in a hack-proof system.

Looks very cool. Thanks! And pricing is reasonable.

try https://github.com/deadcoder0904/paid-license-chrome-extensi...