Great concept, something that needs to be implemented into the browser. However, it breaks YouTube playback in full screen after touching a touchscreen at all while on the webpage. Playback becomes a completely white screen. I disabled other extensions to ensure this extension is the cause.

Workaround: Go to about:config, search for "mousewheel.with_control.action" and set the value to 5 (this is for touchpad pinching and zooming, although it's a little slow). Set "apz.allow_zooming" to true for touchscreen pinch-to-zoom support. Revert any of the "browser.gesture.pinch" settings you may have changed for this extension.

the addon often breaks websites like reddit.com or twitter.com when i try to zoom in. sometimes i accidentally zoom even though it wasn't my attention and when that happens i need to reconcile with the fact my scrolling soon will be over, which makes me really upset.

zooming is okay, but I can't use Shift + Scroll. I have enabled the option but still not working

This extension does exactly what it says, enables smooth zooming with trackpad gestures.

But I noticed an issue while zoomed in: when using Control-Command-D to show a definition of a selected/hovered word, the word selected is incorrect.

Works really well on most pages, would be useful if it would ignore html scale options.