Timer Demo

Run a browser countdown timer with 1–30 minute presets, pause/reset controls, +1 minute, status notices and a short Web Audio alarm.

What this tool does

Timer Demo runs a countdown with 1, 5, 10, and 30 minute presets. Start, pause, reset, or add one minute while watching the HH:MM:SS display and status notices.

Who this is for

• Users who need a quick short-duration browser timer
• Developers demonstrating basic countdown interactions
• Anyone testing preset, pause, reset, and alarm behavior

How to use this tool

1. Choose a 1, 5, 10, or 30 minute preset
2. Select Start and use Pause or Reset as needed
3. Use +1m to add a minute, including while the timer is running
4. Wait for the status notice and short alarm when the countdown reaches zero

Inputs

Inputs are the four preset buttons and the Start, Pause, Reset, and +1m controls. There is no custom duration field, account, or saved timer state.

Outputs

The page updates an HH:MM:SS countdown and status messages. At zero it attempts a short Web Audio alarm; it does not export data or continue as a background service after the page is closed.

Example use cases

• Time a short practice, break, or demonstration
• Show a simple countdown interaction in a browser
• Test pause, resume, reset, and one-minute extension behavior

Frequently asked questions