Firefox now supports the blink compatible Web-Extensions API so theoretically the same code (or with minimal modifications) should work for FF. I'd see if I can

Firefox now supports the blink compatible Web-Extensions API so theoretically the same code (or with minimal modifications) should work for FF. I'd see if I can find some time to test it. I personally use FF as my primary browser too, but I wrote this as a chrome extension just for a PoC, and packaging for chrome is quite easy. It's really a lunch-break-task :)