Verify a file SHA-256 hash
Upload a file to compute its SHA-256 cryptographic hash. This helps verify file integrity, detect tampering, or confirm that two files are identical. Your file is never stored.
Common use cases: contracts, PDFs, software downloads, invoices, evidence files.
Compute & compare SHA-256
What is a SHA-256 hash?
SHA-256 is a cryptographic hashing algorithm that produces a unique 256-bit fingerprint for any file. Even a one-byte change results in a completely different hash.
Why verify a SHA-256 hash?
- Verify that a downloaded file was not modified
- Prove that two files are identical
- Detect tampering or corruption
- Confirm document integrity for legal or professional use
Is this SHA-256 tool private?
Yes. Files are processed in memory only and never stored. This tool is designed for privacy and security.
What’s next?
Verifying a hash tells you if a file is intact — but it doesn’t prove when it existed.
- ✔️ Generate a permanent proof ID
- ✔️ Get a timestamped PDF certificate
- ✔️ Share a public verification link
- ✔️ No account • No file storage