Clock screensaver
Turn any screen into a clock screensaver. The time drifts slowly around a black screen so no pixels stay lit in one place, which protects OLED TVs and monitors from burn-in. Pick a color, dim it for the bedroom, and press Start screensaver.
Why a moving clock?
OLED and plasma screens can keep a faint "ghost" of anything that sits in the same place for many hours, called burn-in or image retention. A clock is the classic culprit, because the same digits stay lit all night. Moving the clock slowly and keeping the rest of the screen black spreads the wear across the panel, and a black background uses very little power on OLED screens.
Tips for a bedside or TV clock
- Choose red and turn the brightness down for a bedroom; dim red light is the least disruptive at night.
- On a smart TV, open this page in the TV's web browser and press Start screensaver.
- Turn off the screen-off timer in your TV or computer settings if the screen still sleeps.
- Move the mouse to see the cursor again; press Esc to leave full screen.
Prefer a style? Browse the clock themes, or use the full screen clock and flip clock.
Questions people ask
Can I use an online clock as a screensaver?
Yes. Open this page, choose your colors and press Start screensaver. It fills the screen, keeps the display awake on supporting browsers, and slowly moves the clock to avoid burn-in.
Does a clock screensaver cause burn-in?
A still clock can on OLED and plasma screens if it is left on for many hours a day. This one drifts slowly and keeps the background black, which spreads the wear.
How do I stop my screen from turning off?
In full screen the page asks the browser to keep the screen awake, which works in current Chrome, Edge and Safari. If the screen still sleeps, change the display sleep setting on the device or TV.
What color clock is best at night?
Dim red. It is easy to read in the dark and has the least effect on night vision.