Works perfect, except on Youtube. I have a good gpu but when colors are inverted, Youtube videos lag heavily. Have to turn it off for youtube, everywhere else it works fine. CPU usage also goes to crazy 30% because of youtube on invert. Please fix.

Edit - Contacted the developer, gave me an extremely helpful reply. Will be resolved soon hopefully.

Класс, все четко работает

Is an improvement on the dark reader I was using previously in the following ways :
1. colour scheme is truly quite intelligent and much easier on the eyes than simple inversion
2. the menu for controlling the extension is well-designed, intuitive and looks good

Cool. but how do I turn it off?

Cool!

Жутко тормозит на мобильной версии Firefox. Хотел с планшета почитать сайты, но не тут то было! Так как для мобильной версии Chrome нельзя устанавливать расширения, то специально установил мобильный Firefox и это дополнение. На моём Asus MeMo Pad FHD10 страницы грузились очень долго, прокрутка практически зависала по несколько секунд. На десктопной версии проблем нет.

White screens kill my eyes.

Awesome app

Not working!

Exactly what I need in the night. Many thanks!

Muito bom, funciona muito bem.

Pretty cool, needs some time to adjust to it. Some shortcuts are not working on my setup

thanks for this great addon, keep it up

This add-on is really great for people like me who prefer to use dark mode/themes all over. My OS is also always on High Contrast with White text on Black backgrounds. Firefox's Colors doesn't help much because most websites are simply useless when viewed with overridden dark colors and High Contrast. So I thank the developer for really good and useful work!
However there seem to be issues with some sites (bugzilla.mozilla.org is completely dark with nothing visible; GitHub fares a little better but still unusable). Performance is also a big hindrance - page loads and scrolling are completely off with this extension enabled. I presume the Chrome version may not have these issues but I prefer Firefox and would like to see this extension working well with it.

I can't help but assume there is a bug, but while Dark Reader works as advertised, it completely destroys performance. I'm using a 2017 Macbook Pro and viewing even the simplest pages result in extremely laggy scrolling, page load, and even closing Firefox sometimes hangs. I initially assumed it was a problem with Firefox, but as soon as I removed Dark Reader, everything was fine again.