Cryptographically random passwords, diceware-style passphrases and PINs, with entropy.
MD5, SHA-1/2/3, BLAKE2 and CRC32 of text or files, with checksum verification.
Sign a message with HMAC (SHA-256, SHA-512…), as hex and Base64 — handy for webhook signatures.
UUID v4, time-ordered UUID v7, ULID, Nano ID, hex tokens and name-based UUID v5.
QR codes for links, text, Wi-Fi, email, phone and contact cards — as PNG and SVG.
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