ToolBox

Keep awake

Popular

Prevent screen sleep for demos, reading, or monitoring

Screen may sleep

Idle

Prevent automatic screen sleep while this page is open — useful for demos, reading, or monitoring. Closing the tab or stopping releases the lock.

Auto-resume when tab is visible

Status

Idle

Elapsed

00:00

Visibility

Foreground

API

Detecting

How it works

· Uses the browser Screen Wake Lock API — no extension required.
· Only works while this tab is visible. Some devices may still sleep on low battery.
· Closing the page, refreshing, or stopping releases the lock immediately.
· Supported in recent Safari, Chrome, and Edge. Button disables if unavailable.