We recently wrote a browser extension[1] without any prior experience, and Plasmo made it a breeze. Right from the start, we could focus on what we wanted to build, and not worry about the messy details involved in building a cross-browser extension. It just felt like writing a normal React app. Their documentation is also amazing.
Can't recommend them enough. If you want to build a browser extension yourself, absolutely give Plasmo a try!
[1]:
https://liveblocks.io/devtools
