You must have one of these browsers: Chrome / Firefox / Safari
Using the browser, go to https://darkreader.org/
Choose your browser then install Dark Reader (It’s a browser extension/plugin)
Optional: you can turn on/off and edit settings by clicking on the extension icon!
- Rest has done, Enjoy!
PS: Also know that the extension must get some little texture issues with some websites, but still too powerful & helpful for your eyes.