The best part? It is free and open-source software (FOSS) that doesn’t show ads and doesn’t collect user data. You can adjust brightness, contrast, sepia filter, dark mode, font settings and ignore-list. It inverts bright colors on website, making them high contrast and easy to read at night. In fact, it is the one that I have used for long on Firefox, and it works impeccably on about 99% of the sites. Dark Reader is probably the most-used and best-known dark mode extension on both Chrome and Firefox.
