Crypto tools

    Hashes, tokens, keys, ciphers and password tooling.

    Token generator

    Generate random strings with the alphabet you choose — API keys, passwords, nonces.

    Hash text

    Hash a string with MD5, SHA-1, SHA-256, SHA-512, SHA-3 or RIPEMD-160.

    Bcrypt

    Hash a password with bcrypt, or check a string against an existing bcrypt hash.

    UUID generator

    Generate RFC 4122 UUIDs — v1, v4 and v7 — in bulk.

    ULID generator

    Generate lexicographically sortable universally unique identifiers.

    Encrypt / decrypt text

    Encrypt and decrypt text with AES, TripleDES, Rabbit or RC4.

    BIP39 passphrase

    Generate a BIP39 mnemonic and its entropy, or convert an existing mnemonic back.

    HMAC generator

    Compute a keyed-hash message authentication code for any message.

    RSA key pair generator

    Generate an RSA public/private key pair in PEM format using the Web Crypto API.

    Password strength analyser

    Estimate a password’s entropy and how long a brute-force attack would take.

    Everything here runs on your machine

    These 10 crypto tools are plain client-side JavaScript served as static files. There is no backend to receive what you paste, no account to create and no usage limit. Open your browser's network panel while you work and you will see the page load, then nothing else.