Online Alarm with Sound

An online alarm with sound. Plays a four-beep chime in the tab and ships push or Telegram alerts so you still hear something when the page is in the background.

Alarm

Set an alarm time and get pinged through your channels of choice.

Channels
Browser (off)
07:00
07:00
Browser alarm tones are notoriously unreliable: tabs get backgrounded, audio is throttled, sleep mode mutes the laptop. The honest answer is that a single in-tab tone is not enough for a reliable wake-up. This page uses tab audio as a foreground signal but pairs it with push or Telegram for the cases where audio fails. The sound itself is generated with the Web Audio API: four short 880 Hz beeps, ~180 ms each, separated by 120 ms — distinct enough to recognise as an alarm, brief enough to dismiss without breaking concentration. There is no audio file to download and no DRM to negotiate; the browser synthesises the tone on the fly when the alarm fires. If you keep the tab open in the foreground (a second monitor, a always-on dashboard), the in-tab sound is the primary cue. If you minimise or background the tab, push notifications are the backup. The tone toggle on the widget lets you turn the in-tab sound off entirely if you only want push or Telegram.

FAQ

Why doesn't my alarm play sound?
Most likely the tab is in the background and your browser is throttling audio. Bring the tab to the foreground, or rely on push/Telegram instead.
Can I use a custom sound?
Not currently. The built-in chime keeps the page asset-free and avoids autoplay issues. Push notifications use your OS's notification sound.
Is the sound copyright-free?
Yes — it's synthesised on the fly with sine-wave tones. No external audio file is loaded or distributed.
How do I make the alarm louder?
Tab audio inherits OS volume. For louder alarms, use Telegram or browser push on a phone with the volume up — phones don't background-throttle notification audio.

Related alarms

← RemindMeNow