But the popup won't open correctly, as it's not loading the content, I don't know if it's missing something.
Also Firefox won't install it permanently without a signature, so I would have to upload it myself and I won't because it is not my original work (even if I could fix the popup).
I could load it into Firefox by following this guide https://www.youtube.com/watch?v=yRFKa9Z-ESg and modifying the manifest.json to:
But the popup won't open correctly, as it's not loading the content, I don't know if it's missing something. Also Firefox won't install it permanently without a signature, so I would have to upload it myself and I won't because it is not my original work (even if I could fix the popup).