Hash Generator

Generate SHA-256 or SHA-1 hashes in your browser using the Web Crypto API.

Hash (SHA-256)
—

Informational only; verify critical results independently.

How to use

  1. Paste the exact string or byte sequence you need to fingerprint.
  2. Select SHA-256 (recommended) or SHA-1 only if a legacy system requires it.
  3. Generate the hex digest and compare to a published checksum.
  4. Use for download verification, cache keys, or non-secret fingerprints.
  5. Never treat a hash as hiding a secret—hashes of short passwords are guessable.
  6. Clear sensitive input after copying if you share the machine.

Examples

  • SHA-256 of a config snippet before/after edit
  • Compare to a vendor’s published SHA-256 for an installer
  • SHA-1 of a Git blob for debugging (legacy)
  • Fingerprint a JWT header.payload before signature
  • Checksum a pasted certificate PEM
  • Derive a short id from a long URL for logging

FAQ

Where does hashing run?
In your browser with the Web Crypto API; plaintext is not sent to Vastorae.
SHA-1 vs SHA-256?
SHA-1 is deprecated for security; SHA-256 is the modern default. Some systems still ask for SHA-1.
Hex vs Base64 output?
This tool typically shows hex digests; convert encoding if your API expects Base64.
Can I hash files?
This page is text-oriented; large files may need a desktop tool to stream bytes.
HMAC?
This is plain SHA; message authentication needs HMAC with a secret key elsewhere.
Tamper detection?
If an attacker can change both file and published hash, verify the hash through a trusted channel.

Related guides

Related tools

Last updated: 2025-11-09

← Back to Developer Tools