Ertug Karamatli

Good catch! I tried to get the zoom level to compensate using the answer below but `gBrowser` becomes `undefined` whenever I change the zoom level. http://stackoverflow.com/questions/13085635/how-to-zoom-page-using-firefox-addon/13109830#13109830 Unfortunately, I don't have...

Thank you! I'd want to but I didn't have the time. I will try to look into it.

I had a look at the WebExtensions API and noticed that the API for setting layout.css.devPixelsPerPx is missing. I found a bug about it that also mentions AutoHiDPI: https://bugzilla.mozilla.org/show_bug.cgi?id=1373607