SERIOUS MEMORY LEAK. After a month of my laptop locking up and requiring a forced restart I narrowed it down to being Dark Reader with Sepia cranked up to the maximum setting. There's no doubt this is the most effective extension for forcing websites to "go dark". Unfortunately, it's unusable if it freezes your computer every few hours. UPDATE: tried it again a few months later and still the same problem.

Does not work on the *literal first page* I tried it on, this one. What the...?

Unusable. Brings PC to a crawl. Keep getting notifications that this addon is to blame. Have Uninstalled. Love dark theme, but not worth the huge hit to performance. Luckily more sites are including dark themes, hopefully making this addon obsolete.

The color combinations are nausiating and most are still barely readable

Please never install this. It enables dark mode (that too partially such that sites are unreadable). And this mode does not even go away when I disable dark mode or even on removing this add on and restarting firefox. The single worst add on I have ever installed.

toolbar icon is gone, cant find it in the overflow nor customize menus

there is no way to save website exceptions when reinstalling! i had to reinstall firefox and all of my website exceptions are gone, over 50 sites! 1 star, include a way to export sites...

this extension started to push "news" when you open it. IT SHOULD NOT BE TRUSTED

OK for Chrome, bad for Firefox. Doesn't import exported site-list as many have said here.

Zero stars, as my Motorola was unable to even install it.

Worse with each update.

Buggy, shouldn't be be a production plugin, messes up more sites than it works on. Not sure how it has such a good rating.

This addon was making my browser run much slower and making it crash every 30-60 minutes. Removed it and browser is running lightning fast, no crashes.

В последнее время всё больше сайтов отображается некорректно, некоторые элементы ввода съезжают за пределы экрана, а ещё авторы ударились в политическую пропоганду. Спасибо, проживу без этого расширения

Агитация и пропаганда в дополнении.

I got a popup in the addon that links an article, decrying Russia's operations in Ukraine. I didn't install a simple dark-mode addon to be bombarded with more political nonsense. I just want to be able to use my addon in peace, for god's sake.

Its Mozilla addons description page claims it "doesn't show ads" but when you go to its options page, it is absolutely slathered with advertisements for "sponsors" (i.e., the developer has been paid money by these sponsors to put this advertisement there). Extremely dishonest.

no funciona y me es muy necesaria

Although my use of this app was no problem only my zendesk application somehow changed color to faded white and letters no color thus invisible.

My eye sight is pretty bad so that I was using this but now I am forced to move onto other app which can change the hues on screen accordingly. inquired through Twitter and through email to no avail. You did not respond. You should have responded to my inquiry.

What a piece of shit this extension has become! Completely crashes Firefox here, every fucking day, stops browser from accessing internet if I am on VPN, it never works I have to restart firefox constantly if watching videos, whatever. It is useless!