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Hash & Crypto

Generate hashes, UUIDs, and passwords

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Hashes, UUIDs, passwords, and secure tokens

Hash and crypto tools generate the values you need when you're working with identity and integrity: SHA-256 a payload to verify it survived a download, generate a UUIDv4 for a new database row, mint a strong random password for a freshly-onboarded user, hash a file with bcrypt to test a login flow, generate a Nano ID for a short URL. All of it runs in your browser via the Web Crypto API, which means the inputs and outputs never touch a server — important when you're dealing with anything that could be a secret. If you're seeding test fixtures or writing a migration that inserts identifiers, the bulk-generation modes save the round-trip to a script.

8 tools

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

Open Hash Generator

UUID Generator

Generate v4 UUIDs

Open UUID Generator

Password Generator

Generate secure random passwords

Open Password Generator

Nano ID Generator

Generate Nano IDs

Open Nano ID Generator

Hash Comparator

Compare two hash values

Open Hash Comparator

HMAC Generator

Generate HMAC with various algorithms

Open HMAC Generator

Random Bytes Generator

Generate cryptographically secure random bytes

Open Random Bytes Generator

Bcrypt Hash Generator

Generate bcrypt hashes for passwords

Open Bcrypt Hash Generator