Proofisy
Integrity Check
Verify that your files remain unchanged.
Proofisy helps you build trust in your digital files by generating verifiable integrity certificates directly in your browser.
Each certificate contains a unique SHA-256 digital fingerprint specific to your file, making it possible to verify its integrity and identify any modification with certainty.
At any time, you can compare a file against its certificate to confirm that it remains exactly unchanged — whether minutes, months or years later.
No uploads. No cloud processing. Your files stay on your device.
Privacy First
All fingerprint generation and verification are performed locally in your browser.
Instant Verification
Verify the integrity of documents, images, archives and videos in just a few seconds.
Any File Type
ZIP archives, PDFs, photos, videos, contracts or any other digital files.
Ready to build trust in your files?
Start generating integrity certificates for your files directly in your browser.
Open Proofisy