Free · no upload · no account
Validate PDF signatures
Check a signed PDF to see whether it was altered after signing. The validation runs on your device.
Open Validate signaturesRuns in this browser tab. Your file never leaves your device.
How to use Validate signatures
- Open the signed PDF.
- Run the signature validation.
- Read the result for each signature.
Questions
Is Validate signatures free in PDFMoose?
Yes. It is free in PDFMoose, with no account, no watermark and no daily task limit.
Are my files uploaded when I validate signatures in a PDF?
No. The work happens entirely in your browser, so your file stays on your device and is never uploaded.
Can I see what changed after signing?
Yes. Use Changes since signing for a plain-words account with page pictures.