Embed a countdown timer on your site
Add a free Online Timer to a blog, classroom page or lesson plan with one iframe. The timer runs in your visitor’s browser. The embedded timer is a plain timer that loads everything it needs from onlinetimer.app.
This is how it looks in a page.
Try Start, Pause and Reset below. Sound needs a click inside the preview, just like any other media in an iframe.
Embedding answers.
What does the embed include?
A countdown with Start, Pause, Reset, +1 minute, an optional alarm and a clear link back to onlinetimer.app. Preset length comes from the m (minutes) query parameter.
What does the embedded timer load?
Only the timer itself, from onlinetimer.app. It is also marked noindex so search engines do not treat it as a separate page.
Will the alarm work inside an iframe?
Yes after the visitor presses Start (or another control) inside the embed. Browsers block sound until there is a user gesture in that frame.
Can I change the look?
Use theme=dark for a dark page around the grey card, or leave the default for a light page. The timer card itself stays grey so the digits stay readable.