The best!

good

i love dark mode

I've tried many alternatives, but Dark Reader is hands down the best. Huge plus for the flexible settings: you can adjust brightness, contrast, add site exceptions, and even tweak fonts. It runs smoothly in Firefox and doesn't hog resources. Huge thanks to the developers!

世界上最牛逼的深色模式插件。

It saves my eyes from occational flashbang while surfing the web at night.

it works now
--- old ---
last update broke something - it slows down the browser and firefox asks if i want to stop this extension

One of the best extensions I've installed. Simple, effective, and doesn't bloat the browser at all.