Validate PDF Digital Signature Online
Inspect digital signatures in a PDF, review signer and certificate details, and understand whether the signature structure validates without overstating identity proof.
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PDF security
Choose the protection that matches the document
Security operations can add or remove access controls, sanitize data or flatten interactive content. Confirm that the result behaves as intended before sending it to another person or system.
Input
Output
JSON
Batch
Up to 10 files per run
Up to 10 files per run. Only use one run when files share the same operation.
Move into a related operation instead of re-finding the tool.
Download a destination-ready result and verify it before sharing.
Configured runtime limit applies.
Natural next steps
Continue with a related tool using the same file workflow.
JSON
Check the upload limit below
Review the result before sharing
Smart workflows
Finish the job, not just the file
Use the existing tool graph to continue into useful next steps. Bulk and output-packaging capabilities are surfaced automatically where the underlying tool supports them.
Continue with Digital Sign Pdf
Bulk-readyFinish the job after Validate Signature with a relevant MAXScanner tool, without creating a duplicate converter page.
- Validate Signature
- Digital Sign PdfWorkflow-ready
Best when Validate Signature is only the first step in your workflow.
Continue with Decrypt Pdf
Bulk-readyFinish the job after Validate Signature with a relevant MAXScanner tool, without creating a duplicate converter page.
- Validate Signature
- Decrypt PdfWorkflow-ready
Best when Validate Signature is only the first step in your workflow.
About This Tool
Inspect digital signatures embedded in a PDF and review the validation information available from the document and certificate structure. This is useful for checking whether a signed PDF contains a recognizable digital signature and whether the signature data validates against the information available to the tool.
A technical signature result should not be treated as a universal identity, legal or trust guarantee. Certificate trust can depend on the signing authority, certificate chain, revocation information, device trust store and the policies of the organization receiving the document.
How to Use
Upload Signed PDF
Upload a PDF document that contains digital signatures.
View Results
See all signatures found in the document with their validity status.
Check Details
View certificate information, signer details, and signing timestamp.
Export Report
Optionally download a JSON report of the validation results.
Use Cases
Signature structure review
Inspect whether a PDF contains recognizable digital-signature structures and review the validation information available to the tool.
Certificate review
Review signer and certificate fields before applying your organization’s own trust policy.
Integrity investigation
Use the reported cryptographic and document signals as one input to a broader document-verification process.
Frequently Asked Questions
Does a valid result prove the signer’s identity?+
No. Identity and trust depend on the certificate issuer, trust chain, revocation information, trusted stores and the receiving organization’s policy.
Can MAXScanner prove a document is authentic?+
Not by itself. The tool reports technical signature and certificate information; authenticity is a broader trust decision.
Why can another PDF reader show a different trust result?+
Readers can use different certificate stores, revocation sources and validation policies.