File Hash Generator
Generate a SHA-256 cryptographic fingerprint of any file — tamper-proof evidence of your file's exact contents at this moment in time.
Your file never leaves your browser — all processing is local
Drop any file here or click to browse
Any file type · Any size · Never uploaded to a server
For permanent, court-ready proof
Vulta writes your file hash to the Polygon blockchain — timestamped and independent of any company. Unlike a screenshot of this tool, a blockchain record can be independently verified by anyone, anywhere. Free forever, no credit card.
Anchor your file to the blockchain free →You might also find useful