Yes it requires a subscription for full functionality, but this is one of the best forced dark mode extensions out there. Pay once and use it forever on as many browsers and computers as you wish.

The best dark mode extension out there.

The best extension in its category, simply perfect. Simple and extremely functional.

It's a really nice service that makes it very easy to go through the internet, and helps make everything a little more convenient.

This is my favorite dark mode extension. I cannot begin to use my browser without it! It saves my eyes from so much strain from the bright screens (why do white pages exist?) and prevents headaches. Thank you for this extension!

awesome sauce

hands down the single best dark mode add on available, works flawlessly on ALL webpages, thanks!

Easy to use, works out of the box. I didnt feel any need to mess with settings, it helps cut the contrast down, much easier on the eyes.

amazing add on!

German: Nighteye ist das perfekte Add-on, um jede Webseite im schönen Dunkelmodus zu haben. Es ist sehr einfach zu bedienen und macht das Leben einfach so viel besser. Nach dem Testzeitraum kostet Nighteye 9$ im Jahr, was aber meiner Meinung nach viel zu wenig ist. 10/10

English: Nighteye is a perfect add-on for setting any website to dark mode. It's really easy to use and makes life in any way better. After your free trial, Nighteye costs about 9$ which I personally find too cheap. 10/10

Reading at night has never been more pleasant with dark mode on especially for person like me who works all night. Thanks Night Eye! - https://nighteye.app/wikipedia-night-mode

Great dark mode addon, customisable, fast and works the way you'd expect it to.

The best dark mode add-on, so far no issues at all for most websites. I love it!

Reading Wikipedia has never been more pleasant with dark mode on.
Dark eye has made work easier for me.

Night Eye ist super, es macht genau das was es soll. Helle Webseiten auf die Dunkle Seite bringen! Night Eye ist nicht kostenlos aber 9€ im Jahr sind okay.

I am using Deriv TradingView page and it was a pain to see too white at night, the best for my eyes.

This is truly a godsend if you often find yourself spending your nights toiling away on a computer in a dark room. I have used this nonstop since I first found it years ago.
MINIxSQUATCH

I just stumbled upon this add-on when I was searching for a dark mode option for a website. The dark mode this app does is more pleasing in the eye than the native dark mode of my OS.

I have tried a couple of dark mode extensions/apps but so far Night Eye is the best I've used. It has the most pleasing in the eye conversion of dark mode and it doesn't completely invert the colors and just integrate it in a good way. It's relaxing to my eyes.

I really like how this can turn the dark mode on any website and could be adjust it.

the best