DBX SIGNVerify

Confirm a sealed PDF is authentic and unmodified — no account needed.
Help & FAQ Legal & compliance
Drop the sealed PDF here, or click to choose
The file is checked and discarded — never stored. Nothing else about the envelope is revealed beyond its ID, name, and completion date.
How it works. Every completed DBX Sign envelope is sealed with a SHA-256 fingerprint recorded at completion and an embedded PAdES digital signature. This page recomputes the fingerprint of your file and validates the embedded signature. A single changed byte fails both checks. Legal & compliance