You actually can use most bluetooth apis in websites on most browsers outside of iOS [0]. I used recently this tool [1] to program my baofeng radio and the bluetooth aspect of it worked great, but I did end up having to reverse engineer aspects of the payload to get it encode and decode all the channel configuration correctly.

[0] https://developer.mozilla.org/en-US/docs/Web/API/Web_Bluetoo...

[1] https://dz0ny.github.io/5r-mini-ble-tool/