How to use the online alarm
- Choose the time, or tap a quick button like +10 min or 7:00.
- Press Test sound once to check your volume.
- Keep the tab open. Switching tabs is fine.
When it will not ring
A web page cannot wake a computer that is asleep, and it stops if you close the tab. For a nap at your desk or a reminder while you work it is ideal; for waking up in the morning, keep the computer awake and plugged in, or use your phone.
Sounds
Classic beep and Digital are loud and short. Chime is softer. Gentle rise starts quietly and gets louder over about 20 seconds.
Several alarms
Press Set alarm again with another time to add more. Each alarm in the list can be switched off or removed. After it rings and you press Stop, it stays in the list switched off, so you can turn it on again tomorrow.
Alarm in a few minutes?
For “in 10 minutes” a countdown is simpler: try the 5 minute, 10 minute, 15 minute, 30 minute or 1 hour timer.
A reliable morning alarm on a laptop
- Plug the laptop in. On battery, many laptops sleep sooner.
- Set the screen to turn off but the computer never to sleep (Windows: Settings → System → Power; Mac: System Settings → Battery or Energy Saver → prevent automatic sleeping when the display is off).
- Turn off Do Not Disturb or Focus mode, which can mute notifications.
- Turn the volume up and press Test sound. Classic beep and Digital are the loudest.
- Set the alarm and leave this tab open. You can close the lid only if your laptop is set to stay awake with the lid closed.
Naps and short breaks
A power nap of 15 to 20 minutes leaves most people refreshed rather than groggy: press +10 min twice. For a full sleep cycle, set about 90 minutes. If you only need a short countdown, a 20 minute timer shows the time left instead of the time of day.
Heavy sleepers
Pick Classic beep, put the laptop across the room so you have to get up, and add a second alarm 5 minutes later as a backup. Gentle rise is better for light sleepers who dislike a sudden noise.
FAQ
Will the alarm ring if I switch to another tab?
Yes. The sound is scheduled in your browser’s audio system, which keeps running in background tabs.
Does it work if I close the tab?
No. A web page can only ring while it is open.
Can I snooze?
Yes, Snooze adds 5 minutes.
Can I set several alarms?
Yes. Each time you press Set alarm a new alarm is added to the list. Only the next one is armed at a time, then the following one.
Will it ring if my screen locks?
Usually yes on a computer, as long as the tab stays open and the computer does not sleep. Phones often pause web pages when the screen is off, so use your phone’s own alarm there.
Can I make it louder or use my own sound?
Pick Classic beep or Digital, the loudest sounds, and turn up your device volume. Your own music files are not supported yet.
Does it work offline?
Yes, once the page has loaded it keeps working without internet. It still needs the tab open.