This extension can change scripts that are especially bright to be dimmer and darker, so you don't have to get tired of staring at a blue screen that can damage your retina! I highly recommend this to overtime workers or fulltime workers!

The best you can get

Compatibility is very good, but the only drawback is that it will not switch automatically according to the time period

the best dark mode add-on out there.

It's rly great and helped a lot to get rid of these annoying white pages.. sadly it's crashing lately more often after the FireFox update 80.0.1 ..I hope that u look into the problem.. it's rly need a new update

This is by far the best FF add-on I have, and it was just added a few hours ago. Nothing online is as important as being able to comfortably read and view images when browsing. If your eyes get hurt/strained it not only impacts your browsing experience but it can mess with your eye health long term. This add-on is allowing me to surf at night with minimal to no room lighting and not be blinded when a normally overly white page loads. I have just begun to play with the wide range of customizable options available. I am feeling a donation is heading to a dev after I play with this a little more and learn how to best use it.