19 free developer tools that run entirely in your browser. No server, no signup, no tracking — your data never leaves your device.
Includes JSON formatter, EXIF metadata viewer & remover, JWT decoder, SQL formatter, Cron parser, Regex tester, QR generator, CSV↔JSON, Diff checker, Code minifier, and 9 more.
🔒 100% client-side
⚡ Instant, dark theme
💰 Free forever
🔓 Open source: github.com/Linanxi12/devbox-tools
