Set a wake-up time, pick a sound, and arm it — all in a browser tab, with no download and no account. Built for a quick alarm on a laptop or tablet, not as a replacement for your phone's alarm when you need it to survive a locked screen.
Set the time, arm it, leave the tab open — no App Store account, no permissions prompt, no ad-supported alarm app to dig through first.
Set it for any time of day, not just the morning — a reminder to leave for an appointment, check something in the oven, or stop working.
Dim the display for night use so the alarm isn't the brightest thing in the room while you fall asleep.
Set the same wake-up time on a laptop or tablet next to the bed as a second alarm, in case one device gets silenced or the battery dies.
Four steps from setting the time to it ringing.
Enter hours and minutes, and switch between 12-hour and 24-hour format in Settings.
Tap Alarm Armed. This first tap also unlocks sound in the browser — required once per session before the alarm can play automatically.
Choose from three alarm sounds — Happy Bells, Uplifting Flute, or Classic Short — each with a one-tap preview before you commit.
Snooze adds 5 minutes; Stop re-arms the alarm for the same time tomorrow. Left ringing, it stops on its own after 10 minutes as a safeguard.
What you're actually getting, feature by feature.
Happy Bells, Uplifting Flute, and Classic Short — real recorded tones, not a single fixed beep, each previewable before you pick it.
Switch formats without losing the time you've already set.
Dims the display for use at bedside without a full-brightness screen glowing in a dark room.
Clear the browser chrome away so the time is the only thing on screen.
Keeps the screen awake while armed, so the alarm can't be missed because the display went to sleep.
Pick from the same LED color set as the rest of the site's clocks, saved locally for next time.
The questions that come up most about this tool.
No — this runs in the browser tab, so the tab needs to stay open and the screen needs to stay on for the alarm to fire. It's not a substitute for your phone's native alarm if you need it to survive a locked screen.
Yes — three sounds under Alarm Sound in Settings (Happy Bells, Uplifting Flute, Classic Short), each with a one-tap preview so you can hear it before arming.
It rings on a loop for up to 10 minutes as a safeguard against endless ringing, then stops on its own. Tap Stop to re-arm it for the same time tomorrow, or Snooze for 5 more minutes.
Browsers block audio from starting on their own until you've interacted with the page at least once. Arming the alarm doubles as that first tap, so sound is unlocked well before it needs to fire.
Yes, in a mobile browser — but the same rule applies: the tab has to stay open and the screen has to stay on, which is more battery-hungry than a native phone alarm.
Need a plain countdown or a stopwatch instead of a wake-up time? See the Online Timer. Working in focus sprints instead? See the Pomodoro Timer.