Show HN: 5-Minute Timer That Runs in Background with Web Workers

2 addressGen 0 8/25/2025, 1:55:14 AM 5minutetimer.top ↗

Hey HN! I built this simple 5-minute timer because I got frustrated with existing ones that either: - Stop working when browser tabs go to background - Have ads and tracking - Are overcomplicated for such a simple need

Key features: - Uses Web Workers to keep timing accurate even when tab is inactive - Zero tracking, no ads, no registration - Keyboard shortcuts (Space, R, F for fullscreen) - Works offline once loaded - Custom durations up to 24 hours

Tech stack: Vanilla JavaScript + Web Workers + modern CSS Built in ~2 weeks as a side project.

Perfect for Pomodoro technique, workout intervals, meditation, or just timing anything!

Any feedback or feature suggestions welcome!

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Show HN: 5-Minute Timer That Runs in Background with Web Workers

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