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PD Tools
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High-Precision Stopwatch & Multi-Lap Split Timer

Millisecond resolution (1/100s), zero-drift background timing, fastest/slowest lap detection & CSV export.

00 : 00 . 00
Current Lap Time: 00:00.00
Space Start / Stop • L Lap • R Reset
Ecosystem

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Zen Audio

Pomodoro Timer Pro

Focus timer with 25/5/15 cycles, soothing harmonic Zen chime, ambient rainfall noise & session tracker.

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Projector Ready

Countdown & Exam Timer

Classroom exam timer with projector fullscreen mode, Screen Wake Lock API & 3-stage visual color warnings.

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Quiz Mode

Quiz & Speed Game Timer

Per-question quiz timer (15s-60s) with live question progress tracking and 5-second countdown beeps.

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WPM Test

Typing Speed Test

Precision WPM & accuracy test, IME-safe Vietnamese Telex/VNI engine, and mechanical ASMR sounds.

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Mouse Tester Online

Test mouse left, right, middle, side buttons, scroll wheel, sensor jitter, and measure real-time polling rate (Hz) online 100% Client-Side.

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UUID Validator & Inspector

Decode v1-v7 versions, extract embedded creation timestamps & normalize hyphen syntax.

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