Moreover, it was only available on Google Chrome in the past but it is now available on almost all of the major web browsers.Īctivating the YouTube Dark mode is quite easy as mentioned earlier. The YouTube Dark Mode was a bit of a secret a while back, but it is now easier to activate. If you are wondering what this new feature is, YouTube Dark isn’t much of a new feature now, but it is probably the best way to rest your eyes a bit by turning the lights out. 3 How to Get YouTube Dark Mode on Google Chrome.2 How to Activate YouTube Dark Mode on Mozilla Firefox.