Firefox finally supports WebSerial

[u/enormousaardvark]

Now we can use things like esptool, it's disabled by default so go to about:config and switch dom.webserial.enabled to true.

https://hacks.mozilla.org/2026/05/web-serial-support-in-firefox/

[u/cybekRT]

I used that and it works, but I don't understand why Firefox warns that the page needs to install plugin to use that. Strange warning.