Prevent Screen From Sleeping

Stop your screen from going to sleep while you need it. Free, browser-based, and ready in one click.

Ready. Choose a duration and press Start.

Screens sleep to save power, but that is frustrating when you are mid-presentation or watching a long process finish.

This page prevents the screen from sleeping by holding a wake lock in your browser for as long as the tab stays visible.

When you need to prevent sleep

Presentations

Keep slides and demos on screen.

Long reads

Read without the display sleeping.

Monitoring

Watch metrics and logs continuously.

Waiting on tasks

Let installs and renders finish.

Frequently asked questions

Does this stop the computer from sleeping too?

It targets the screen via the browser. System sleep still depends on OS power settings.

Is it reliable on every browser?

It works where the Screen Wake Lock API is supported; otherwise use the device guides.

Do I keep the tab open?

Yes, keep the tab visible for the wake lock to stay active.