Skip to contentHashing, encoding and password tools that never leave your browser.
Passwords, hashing, JWT, HMAC and cipher tools in one workspace.
Generate strong, random passwords with custom rules.
Generate v4 UUIDs individually or in bulk.
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
Encrypt or decrypt text with a Caesar shift or ROT13.
Generate secure random strings and IDs of any length.
Generate compact unique IDs.
Validate card numbers with the Luhn algorithm.
Check if an email address looks valid.
Validate ISBN-10 and ISBN-13 numbers.
Compute CRC32 checksum as hex.
Mask a card number showing only last digits.
Score password strength locally.
Check if a string is a valid IPv4 address.
Generate cryptographically random hex bytes.
Generate multiple UUIDs at once.
Generate numeric PIN codes.