Is Fingerprint Generator private?

Everything runs locally in your browser. Your files are never uploaded to StackPDF servers.

Do I need an account to use Fingerprint Generator?

No. StackPDF is free to use without signing up or creating an account.

Does Fingerprint Generator work offline?

After the page and libraries load, processing happens on your device. A connection is only needed to load the app the first time.

What exactly is hashed?

The raw file bytes on disk — the same content a download would have. Changing metadata, pages, or compression changes the fingerprint.

Which algorithm should I use?

SHA-256 is the recommended default for integrity checks. SHA-1 is legacy (still used by some older systems). SHA-384 and SHA-512 are stronger SHA-2 options.

Can I check a hash from another tool?

Yes. Paste a hex or base64 value into Verify — it is compared against every generated algorithm for this file.

Is hashing free with unlimited files?

Yes. Fingerprint as many PDFs as you need with no account and no upload quota — hashes are computed entirely on your device.

Fingerprint Generator Free (No Upload) — Private Browser Tool

How it works

1Upload a PDF (hashing starts automatically).
2Choose algorithms and copy hex/base64 or verify a known hash.
3Download a text report if you need a shareable record.

About

Create cryptographic fingerprints (SHA-256, SHA-1, SHA-384, SHA-512) of the raw PDF bytes to verify integrity. Copy hex or base64, paste a known hash to verify, or download a text report — all offline.