Real-time regular expression tester with match highlights, capture groups breakdown, and reference syntax cheatsheet.
Runs inside an isolated iframe with strict CSP headers, preventing unauthorized access to host cookies or storage.
Pure client execution without Node.js build bottlenecks. Fast startup with zero egress bandwidth overhead.
Instant simulation across desktop, tablet, and mobile viewports with native resolution scaling.
基于 Vinta Chen 经典开源项目 pangu.js 开发的中文文案排版实验室。遵循《中文文案排版指北》，自动矫正盘古空格与全半角标点，支持 Diff 标记与一键复制。(作者: Vinta Chen / 源码: https://github.com/vinta/pangu.js / 协议: MIT)
Real-time LaTeX formula editor powered by Khan Academy's KaTeX via public CDN. Zero lag, beautiful serif mathematical typesetting with instant export. (Source: https://github.com/KaTeX/KaTeX / License: MIT)
Generate harmonized color schemes with live WCAG AAA contrast inspection and CSS variable exports.
Distraction-free Pomodoro timer with native Web Audio procedural rain and beta-wave soundscapes.