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.

has ads in the install and uninstall screens. bad

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.

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

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

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.

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!

Why is this suddenly changing my theme?

ralenti le chargement des pages et consomme énormément de mémoires et CPU !!! dommage

Automatically enabling itself on every site makes this completely useless. It should be whitelist-based, and only change sites I specifically tell it to, especially since it also modifies sites that have built-in dark modes, or are just dark already - and it messes up other sites, like Outlook, so I couldn't read my mail.

Could be good, but the way it works makes it worthless.

It crashed and make the sites loads more than normal, it takes too much resources that it needs too

Used to be good. no longer.