SHA-256 Hash Generator

Generate SHA-256 cryptographic hashes for your files - useful for integrity verification and testing

Client-side Processing
Private & Secure: Your file is processed entirely in your browser. Nothing is uploaded to our servers.
Any file type supported. Processing happens locally in your browser.
Server-side Processing
File Upload: File is uploaded to our server for hash generation, then immediately discarded.
Maximum file size: 16MB
About SHA-256 Hashing
What is SHA-256?

SHA-256 (Secure Hash Algorithm 256-bit) is a cryptographic hash function that produces a unique 64-character hexadecimal string for any input data. Even tiny changes to the input result in completely different hashes.

Use Cases:
  • File integrity verification
  • Digital forensics
  • Blockchain and cryptocurrency
  • Data deduplication
  • Digital signatures
Security Properties:
  • Deterministic: Same input always produces same hash
  • Avalanche Effect: Small input changes cause large hash changes
  • One-way: Impossible to reverse-engineer original data
  • Collision Resistant: Extremely hard to find two inputs with same hash
Example Hash:
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
This is the SHA-256 hash of an empty string.
What's Next?

Once you have your file's SHA-256 hash, you can:

Create Timestamp

Create an immutable timestamp for legal proof of ownership

Verify Existing

Check if a file has already been timestamped in our system

Copy the generated hash for use in other applications