It is useful.

Used this on Chrome, because with four monitors, the flood of light became tiring. Now that I've switched to Firefox, I was happy to find Dark Reader again. Works great. Nice controls (not that they are needed often). I did notice it's possible to turn off just for a single site (Google docs shared JPGs required), which was nice. This work. Good work.

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!

White screens kill my eyes.

Awesome app

Exactly what I need in the night. Many thanks!

thanks for this great addon, keep it up

WOW! This extension makes viewing like, no pun intended, night and day. I have some vision issues and read a great deal of text on line. This makes everything so much more readable. Thank you.

Sepia color is a killing feature! Thank you for this add-on.

Uma das extensões mais úteis já criadas!

No other dark reader holds a candle to this. OWL etc are awful and so user unfriendly compared. The color inversion is also vastly superior to it's alternatives.

works pretty flawlessly, makes pages read so much easier, and if i need to it's super-easy to turn off