Precision audio metronome and rhythm tap tempo calculator powered by the Web Audio API. Keep steady time from 40 to 240 BPM with visual beat indicators.
Maintain steady tempo for guitar, piano, drums, and vocal scales with sample-accurate Web Audio clicks.
Tap along to any song or beat to instantly calculate its exact musical beats per minute.
Runs purely in your browser without streaming audio delay or advertising interruptions.
iframe sandbox="allow-scripts..."依据《中文文案排版指北》规范，自动在中文汉字与英文、数字之间添加空格（盘古之白），纠正全角半角标点混用，支持 Markdown 实时排版转换与一键复制。纯本地离线运行。
Fast, 100% client-side regular expression tester and syntax highlighter. Test complex regex patterns with live capture group inspection and zero data transmission.
Distraction-free Pomodoro productivity timer paired with synthesized ambient soundscapes (rain, cafe, white noise). Stay in deep flow state with zero tracking or clutter.
Professional design color palette generator with integrated WCAG 2.1 AA/AAA accessibility contrast auditing. Generate harmonious color schemes and verify legibility instantly.