playground
interactive experiments
Cipher Suite
Encrypt and decrypt text with classic and modern ciphers — Caesar, Vigenère, Playfair, Rail Fence, AES, DES, and more.
try itRegex Tester
Test regular expressions live against sample text with match highlighting, capture groups, and flag toggles.
try itJSON Formatter
Format, validate, and minify JSON with instant error feedback and one-click copy.
try it