Developer
Hash, QR code, timestamp, regex
Hash CalculatorMD5 / SHA-1 / SHA-256 / SHA-512
UUID GeneratorUUID v4 / Short ID / NanoID
Timestamp ConverterUnix timestamp ↔ date, auto sec/ms
JWT DecoderDecode JWT header & payload
Cron ParserTranslate to readable, list next runs
Color ConverterHEX / RGB / HSL mutual
Base ConverterBinary / Octal / Decimal / Hex
Unit ConverterLength, weight, area, data, time
Base64 Encode/DecodeBidirectional, Chinese safe
URL Encode/DecodePercent encode + URL parser
Regex TesterLive highlight, capture groups
TOTP GeneratorGenerate 6-digit code from 2FA secret