When Do You Need to Keep the Screen Awake?
Devices auto-sleep after idle time to save battery — but that interrupts real workflows: your screen goes dark while AI generates code, your casting source sleeps mid-demo, or you just need the display on temporarily without changing system settings.
MeTool's screen wake lock is built for temporary, on-demand use: open the page, toggle on, screen stays awake; close the tab or switch away and everything goes back to normal. No install, no permanent system changes.
How to Use It — Three Steps
① Configure (optional): Set an auto-off timer (e.g. 30 minutes) and pick a background (white, black, or AI coding video). Skip this if you prefer manual control.
② Toggle on: The page goes fullscreen and the screen stays awake. Config options hide while active — only the switch and countdown remain.
③ Turn off when done: Toggle off, let the timer expire, or press ESC to exit fullscreen. Your device returns to normal auto-sleep.
What Works and What Doesn't
The rule is simple: this page must stay visible. Visible = wake lock active; hidden = it stops automatically.
✅ Works for:
- Going fullscreen on this page while waiting for AI (Cursor, Claude Code, Codex, etc.)
- Dual monitors — keep this page visible on the second screen while working on the primary
- In-browser web demos with the browser window mirrored or cast
- Phone or tablet — briefly keep the screen on with this page in the foreground
❌ Does NOT work for:
- Switching to PowerPoint, Keynote, Zoom, etc. and expecting background anti-sleep
- Switching to another browser tab and still staying awake
- Permanent, system-wide anti-sleep (use system settings or tools like Caffeine instead)
When to Choose This Over Other Options
| Approach | Best for | Limitation |
|---|---|---|
| System settings | Long-term, global anti-sleep | Easy to forget to revert; mobile may lack a "Never" option |
| Caffeine / PowerToys | Background anti-sleep without a browser | Requires install; may need admin rights |
| MeTool wake lock | Temporary, zero-install, auto-restores on close | Page must stay visible in the foreground |
If you just need "don't sleep for the next 20 minutes" or want something that works on a machine where you can't install software, this tool is a good fit. For presentations where you switch to slide software, use system settings or a dedicated anti-sleep app instead.