A really useful extension. Potential improvement includes fast toggling from the menu (sometimes it is too sensitive that the highlight pops up when I click the text) and better dark/light mode compatibility.

Doesn't work as expected on Zen browser - messes with the alignment of content in web-view from bottom.
Giving 3 stars because I see it has huge potential, just fix it for Zen and it'll be a 5 star for me.