Hash & UUID Generator

How it works

Generate cryptographic hashes of arbitrary text (MD5, SHA-1, SHA-256, SHA-384, SHA-512) or produce version 4 UUIDs in bulk — two common developer needs bundled behind a single tab switcher.

1. Switch between the Hash Generator and UUID Generator tabs.
2. For hashing: type or paste text and every algorithm's digest updates instantly.
3. For UUIDs: set how many you need (up to 100) and click Generate.
4. Copy any individual hash/UUID, or copy the whole UUID list at once.

Common use cases

• Generating a quick checksum to compare two files or strings for equality.
• Creating primary keys or idempotency keys for a database or API request during development.
• Producing test fixtures that need unique IDs.
• Verifying that a value hashes to an expected digest.

FAQ

Is MD5 or SHA-1 safe to use for passwords?

No. Both are cryptographically broken for collision resistance and unsuitable for password storage — use a dedicated password hashing algorithm like bcrypt, scrypt, or Argon2 instead. They're included here for checksums and legacy compatibility, not for securing secrets.

Are the UUIDs cryptographically random?

Yes — they're generated with crypto.randomUUID(), a cryptographically secure random number generator, producing standard version 4 (random) UUIDs.

Can I hash a file, not just text?

Not currently — this tool hashes the text you type or paste rather than uploaded files.