Certify PDFEnterprise
Certify a PDF with a digital certificate. Enterprise plan required. Secure and fast.
How to Certify PDF
Upload your PDF
Select certification level
Apply certificate
Download the certified PDF
Frequently Asked Questions
1What's the difference between signing and certifying?
Certification sets the allowed change level (no changes, form fill only, or annotations). Signing just proves identity.
2What certification levels are available?
Three levels: no changes allowed, form filling and signing only, or form filling, signing, and annotations.
3Can a certified PDF be modified?
Only within the allowed change level. Changes beyond the permitted level invalidate the certification.
4Is certification stronger than a digital signature?
Yes. Certification controls what changes are permitted and prevents unauthorized modifications. Standard signatures only prove identity.
Why Use ZiaSign's Certify PDF Tool?
ZiaSign's PDF certification tool applies a digital certificate that controls what modifications are allowed after certification. Choose no changes, form-fill only, or annotations only. Stronger than standard digital signatures.
Also known as: certify pdf · pdf certification · certified pdf document · pdf digital certificate
How-to guide
Prefer the step-by-step version first?
Step-by-step instructions to certify a pdf with a digital certificate with ZiaSign.
Popular Ways to Use Certify PDF
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Why teams stay with ZiaSign after the first quick fix
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Secure file handling by default
Files are processed securely and automatically deleted after 1 hour so quick PDF jobs do not turn into storage risk.
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Start with a single tool page, then move into guided document tasks without leaving the platform.
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Trusted by thousands of professionals worldwide. All files are processed securely in your browser or encrypted servers and automatically deleted.
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