Readers and students
Follow a score, recipe or textbook without the screen dimming every thirty seconds.
Keep awake
Stop the screen from going dark mid-task.
One switch holds a browser wake lock so your display stays lit while this tab is visible — and releases it automatically the moment you move on.
--
keep-awake: off
checking support…
Tap for fullscreen · the clock keeps running
Wake lock
Checking whether this browser supports the Screen Wake Lock API…
Filming and streaming
Use a phone as a light, teleprompter or monitor without the display sleeping mid-take.
Workshops and kitchens
Keep a timer, checklist or reference sheet visible with both hands busy.
Bedside and desk clock
A black fullscreen clock that stays lit all night — and costs almost nothing on OLED.
How to use it
Three steps, no learning curve.
- 01
Switch it on
Enable keep-awake and the page asks the browser for a screen wake lock. Your display will not dim or sleep while this tab is visible.
- 02
Open the clock fullscreen
Tap the panel to fill the display. The clock keeps ticking so you have a bedside clock, kitchen timer or workshop display that stays lit.
- 03
Leave it
Switch to another tab or lock the device and the lock is released automatically. Come back and it re-acquires by itself.
FAQ
Common questions
How does keep-awake work?
It uses the Screen Wake Lock API, a browser standard that asks the operating system to keep the display on. There is no app to install, no account and no permission prompt — the browser either supports it or it does not.
Which browsers support it?
Chrome, Edge, Opera and most Android browsers support it on desktop and mobile. Safari supports it from iOS 16.4 and macOS Safari 16.4. Firefox does not yet implement the API, so the toggle will report that it is unavailable.
Does it stop the device from locking?
No. It only prevents the screen from sleeping. The device itself can still lock on a schedule or by button press, and switching away to another app ends the lock.
Will it drain my battery?
Keeping a display lit always costs power, and a bright screen costs more. Use a dark or black screen while keeping it awake, and on OLED that is about as low as it gets.
Is my device supported?
The page checks for you and tells you immediately. If wake lock is unavailable, the rest of the tool still works — you can manually raise your device’s screen timeout instead.