Works great on my Lenovo Yoga 11 Gen 6. Why this isn't built-in to Firefox when the code is so short is beyond me. Hats off to the developer.

Using this on a surface tablet, works perfectly. The animation helps you to not activate the swipe action by accident.

I really hope I can control trigger sensitivity, I often mis-trigger.
Other than that a great extensions.

11/21/2024 update:
I believe I have narrow down the bug:
The backward will trigger if i use touch screen immediately after a page is loaded, no matter the gesture. If i wait for a second so the page is fully loaded this won't happen.

This add-on seems to work as expected and add touch screen back and forth with single finger swipe to Firefox on Linux. It even shows an arrow for confirmation when you start swiping just like on Google Chrome.

Tested on Fedora Gnome, Microsoft Surface Go 2 Core m3.