To toggle dark mode for your PDFs in Adobe Acrobat Reader (formerly just Adobe Reader), follow these steps:
How to Use Dark Mode in Adobe Acrobat Reader We'll show you how to use Adobe Acrobat Reader in dark mode for an experience that's easier on your eyes.
This is an especially annoying problem if you often read PDFs for long periods of time, such as with PDF textbooks. If you have the rest of your system set up in dark mode-with light text on a dark background-opening a PDF at night could shock you with its overwhelming brightness.
