Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes - Web Crypto API, fully client-side
Hash Generator
What this tool does
Generates SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes for any text input. Runs entirely in your browser via the Web Crypto API - your data never leaves your device.
Who it's for: Developers verifying file integrity, security engineers computing checksums, and anyone comparing hashes from signed downloads.
When to use
- •Verify that a downloaded file matches the publisher's advertised SHA-256 hash.
- •Produce a stable fingerprint of a string for deduplication or caching keys.
- •Generate hashes for password storage (combined with a proper KDF like bcrypt or Argon2).
- •Compare two strings by hash to detect tampering.
How it works
- 1Type or paste text into the input box.
- 2All 4 hashes are computed locally by the Web Crypto API.
- 3Results display as hex strings - click Copy to use them.
- 4Nothing is sent to any server; close the tab and the data is gone.
Tips
- •SHA-1 is cryptographically broken - use it only for non-security checksums.
- •For password hashing, use bcrypt/scrypt/Argon2, NOT plain SHA.
- •The same input always produces the same hash - tiny changes produce wildly different outputs.