Didn't work for me.

Wonderful app, Lot of options! And very friendly to use. Love it!

I can't enable dark mode for guides.github.com if I've disabled it for github.com

Warning about QR-Codes with this enabled. The QR-Code will not be scannable in some sites whilst this is toggled on. Half the websites I use 2-way authentication for do not work with this on.

Otherwise a great add-on, a must have.

Сайт vk.com долго загружался из-за этого дополнения (вплоть до 15 секунд). После отключения всё стало ок, 3-4 секунды. На остальных сайтах всё ок.

Perfect

I've used this for about a year+ on both Chrome and Firefox. It does an excellent job of converting most websites to a dark theme. It really reduces the strain on your eyes in a dark environment. I'm very happy with this app.