Online Tool Store
File Hash Comparison Tool
File Hash Comparison Tool proves the bytes match what was published; a signature is what proves the publisher published it.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Security & Privacy
File Hash Comparison Tool
Frontend preview — no upload or external service.
Comparison result
SHA-256 computed locally matches the published checksum exactly. A single differing character would mean the file is not the one that was published.
How the File Hash Comparison Tool works
- Select the file — it is hashed in the browser and never uploaded.
- Paste the checksum published by the source, using the same algorithm they used.
- Compare. Hashes match completely or not at all; there is no partial match, and a near miss means a different file.
FAQ
Does a matching hash mean the file is safe?
It means the file is byte-identical to the one whose hash was published. If the publisher's site was compromised and both file and checksum were replaced, they will still match — which is why signature verification exists.
Which algorithm should I use?
SHA-256. MD5 and SHA-1 have practical collision attacks and should not be relied on for integrity against a deliberate attacker, though they still catch accidental corruption.
Is my file uploaded?
No. Hashing happens in the browser, so a large or sensitive file never leaves the machine — which also means the file size limit is your available memory.
How we compare
| Feature | Online Tool Store | A command-line tool | A paid audit service |
|---|---|---|---|
| Nothing uploaded | ✓ | ✗ | Depends |
| SHA-256 support | ✓ | ✓ | ✓ |
| Compare two files | ✓ | Manual | ✓ |
| No install | ✓ | ✗ | ✓ |
File Hash Comparison Tool proves the bytes match what was published; a signature is what proves the publisher published it.