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Hash Generator

Hash text or files with MD5, SHA-1 and SHA-2.

Input

Algorithms & options

Algorithms

Which algorithm should I use?

  • SHA-256 / SHA-384 / SHA-512 — recommended for security, checksums and file integrity.
  • SHA-1 — legacy; still fine for non-security checksums but officially weakened.
  • MD5 — deprecated for cryptography due to collisions; kept for legacy compatibility.
  • HMAC — keyed hash used to verify authenticity between parties that share a secret.

Frequently asked questions

Can I hash large files without freezing my browser?
Yes. Hashing runs in a dedicated web worker, so a 100 MB file won’t block the UI. A progress indicator keeps you informed while it works.
Is MD5 still secure?
MD5 is broken for cryptographic use (collisions) and SHA-1 is weakened. For security-sensitive work use SHA-256 or stronger. MD5 and SHA-1 are included for legacy checksums and compatibility.
What is HMAC?
HMAC (Hash-based Message Authentication Code) is a keyed hash: a secret key is mixed with the data before hashing. It verifies both integrity and authenticity when both parties share the secret.