Keep awake

What it does

Keep your screen on while this page stays visible, with timed sessions, a clock and optional break reminders.

How to use it

1. Choose a duration, an end time or Until I stop, then press Start. Stop releases this page's screen wake lock; your normal sleep settings then apply.
2. Keep this page visible. A compact window can sit beside another app, but cannot stay on top automatically or guarantee background operation. Press Start separately in that window.
3. The browser can pause or refuse the lock. Active means the browser reports a held lock, not a guarantee against system sleep. Returning to the page retries an enabled, unexpired session.
4. Clock, break reminders and saved preferences stay on this device. No account, download or upload is required; saved settings never start a session automatically.

Example

Choose 60 minutes and press Start. Keep the page visible beside your work; Stop or the session deadline releases its screen wake lock.

Methodology

After an explicit Start, the browser's Screen Wake Lock API requests a screen lock. The displayed state follows acquisition and release events. Hidden pages release their lock; visible, enabled sessions retry until stopped or expired. Each compact window owns its own independently started session.

Limitations

Requires a supported browser and HTTPS or localhost. Duration 1–1,440 minutes, a local end time within the next day, or no deadline. Keep the page visible; hidden tabs, minimized windows, power saving and system policy can release or refuse a lock. No background or closed-lid guarantee. Compact windows cannot stay on top automatically. Reminders can be delayed by browser suspension; the clock and session deadlines use device time.

Automation

This tool runs in your browser. No upload API or MCP endpoint is available.