File Hash Verifier – Checksum Tool
Verify file integrity by comparing hash checksums. Confirm downloads are authentic and unmodified with MD5, SHA-1, or SHA-256.
Our File Hash Verifier calculates and verifies file hashes (SHA-256, SHA-1). Hash verification ensures file integrity—download a file, calculate its hash, and compare with the expected hash to confirm it wasn't corrupted or tampered with.
All hashing happens in your browser using the Web Crypto API. Your files never leave your device. Essential for secure downloads, software distribution, and digital forensics.
Features
- SHA-256, SHA-1 support
- Verify file integrity
- 100% client-side
- No server uploads
- Free with no limits
How to Use
Upload the file you want to verify.
Select the hash algorithm (SHA-256 or SHA-1) used by the source.
Paste the expected hash in the verification field.
Compare—green means match, red means mismatch.
Frequently Asked Questions
What is a file hash?
A hash is a fingerprint of a file. Same file always produces the same hash. Any change corrupts the hash, revealing tampering or corruption.
Are my files sent to a server?
No. Hashing happens entirely in your browser. Your files never leave your device.
Why SHA-256 over SHA-1 or MD5?
SHA-256 is more secure. SHA-1 and MD5 have known vulnerabilities. Use SHA-256 when the source provides it.