Countdown

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About Countdown

Introduction

Countdown is a purely frontend online timer tool. It supports custom countdown durations and quick preset selection. Precise to seconds, with pause, reset, and status notifications. Ideal for cooking timers, workout timers, focus sessions, exam timing, and more. All data is processed locally in your browser and never uploaded to a server.

Features

  • Custom duration and multiple presets for quick start
  • Precise to seconds with pause and reset support
  • Real-time remaining time display with synchronized window title
  • All processing locally, data never leaves your browser
  • Responsive design, works on all devices

How to Use

  1. 1Click a preset button to start quickly, or enter a custom duration
  2. 2Pause or reset at any time during the countdown
  3. 3The window title updates in real-time with remaining time
  4. 4A notification appears when the countdown ends

FAQ

Can I set a custom countdown duration?
Yes. You can click a preset button to quickly select a duration, or enter any custom time in seconds in the input field to meet various timing needs.
Does the countdown continue in the background?
Yes. The countdown runs locally in the browser. It continues even if you switch tabs or minimize the window, and the window title shows the remaining time.
Is my data uploaded to a server?
No. All countdown processing is done locally in your browser. No data is transmitted over the network, protecting your privacy.
Can I pause the countdown while it's running?
Yes. You can click the 'Pause' button at any time during the countdown to pause it, then click 'Resume' to continue.
Is there a sound alert when the countdown ends?
Yes. When the countdown ends, the browser plays a sound alert and the page title flashes. If you have granted desktop notification permission, a system notification will also be displayed.
Will the countdown state persist after refreshing the page?
No. The countdown state is only maintained during the current page session and will reset if you refresh the page or close the tab. For long-duration timing, we recommend keeping the page open.

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