Test every key on your keyboard and see key name, key code, scan code, and modifier states instantly. Diagnose keyboard issues and find JavaScript key codes for development.
Test every key on your keyboard with a full visual keyboard layout. Keys highlight in real-time when pressed, making it easy to spot any non-functioning keys. See key name, code, keyCode, and modifier states instantly.
All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.
Compare two texts and find differences with side-by-side and unified views. Highlight changes at word or character level with clean, intuitive interface.
Calculate Linux file permissions (rwx) in both octal (755) and symbolic (-rwxr-xr-x) formats visually.
Track time across multiple cities and timezones simultaneously. Features real-time updates, DST support, day/night indicators, and time comparison table.