Stop your computer from turning off.

Keep Screen On is a free browser tool that keeps your Windows screen on and prevents it from turning off while this page remains open. Choose a time limit or No Limit, press Start, and keep your Windows display awake without changing power settings or screen timeout in Windows.

The tool uses the Screen Wake Lock feature supported by Chrome, Edge, and other modern browsers on Windows to prevent screen dimming, screen sleep, and automatic locking while the timer is running. It does not change your Windows settings, and there is nothing to download or install.

It works on Windows laptops and desktop PCs in Chrome, Edge, Firefox, and other supported browsers. Whether you need to keep your Windows display on for a few minutes or keep your computer awake for hours, you can start the timer and let it run until you're finished.

The most common reason to keep your Windows screen on is to stay marked as online or active in work apps, messaging platforms, remote desktop sessions, and social media without your PC entering sleep mode or locking while you're away.

It is also useful while downloads, uploads, backups, updates, and other long-running tasks are in progress on your Windows PC. Keeping your display awake helps prevent screen timeout, screen dimming, and interruptions caused by sleep mode.

You can also use it whenever you want to keep your Windows display on, avoid repeated PIN or password prompts, prevent screen sleep during presentations, or simply stop your computer from sleeping for a while without changing your normal power settings.