Fingerprint Generator
Mark a recipient’s PDF copy or verify file hashes.
Opening your local workspace…
How to use Fingerprint Generator
Mark a recipient’s PDF copy or verify file hashes. Everything is processed in this browser.
- 01
Choose a supported file from your device.
- 02
Adjust the available options. If a page range is shown, use “all” or numbers such as 1-3, 5.
- 03
Run Fingerprint Generator and download or read the result. Review the output before using it.
Supported files
Any local file type. Results are generated locally. Device memory and browser format support determine practical limits.
Recipient marking adds an invisible text identifier and a metadata reference to a PDF. It can be removed by editing or rasterization; this is not tamper-proof tracking. Keep the reference yourself. Non-PDF files return hashes.
Your files, on your device
Unlimited use with no daily quotas. No account, subscription, database or automatic watermark. Files are held in memory while you work. The app can cache its code and bundled models for offline use.
Peer tools share only with the device you choose to pair. Read the privacy details.
Common questions
Is Fingerprint Generator free to use?
Yes. OhhPDF has no signup, paid tier, processing fee or daily usage quota. Device memory and each tool’s format and resolution limits still apply.
Do my files get uploaded?
No. Processing runs on your device. If you choose the P2P sharing or whiteboard tools, data goes directly to the peer you pair.
Can I use it offline?
Load the tool and any required model once while online. Once its assets are cached, supported browsers can reuse them offline. Clearing site data removes that cache.