SleepyHead

A sleep timer extension for any website so you get a more restful sleep.

Start playing some media, set a timer and watch or listen until you doze off. When the timer has ended, the SleepyHead timer completed page will be shown, allowing your devices screen to turn off. Hit the back button the next day to resume watching.

Use the optional Sound Softener to suppress loud and sudden sounds and enable the optional Night Shift to reduce blue light from your screen.