Credibility and Validity

ComPDFKit's Digital Signatures verify whether PDF files have been tampered with by using Digital Certificates to parse the abstract of documents, so as to guarantee the authenticity and legality of PDFs.
Credibility and Validity

Protect with Encryption & Trust Certificates

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Verify Reliability
Cryptographic signatures validate if the source is reliable with .P12 or .PFX certificates, building a secure digital communication and interaction environment.
Prevent Being Falsify
Verify that PDF documents have not been falsified and distorted by using a variety of cryptographic algorithms, including RSA, MD2, MD4, MD5, SHA-1, SHA-256, and more.

Secure and Mighty Digital Signatures

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Visualize Digital Signatures
Optionally insert visible and invisible digital signatures into PDFs, sign by drawing, typing, or uploading images.
Sign to Avoid Tamper
A wide range of signing algorithms and methods prevent the data of PDF documents from being tampered with.
A Sorts of Certificates
Use digital certificates issued by the Certificate Authority or generate a self-signed certificate.
Flexibilize Signing Processes
Embed Digital Signatures into any different stages of workflows to improve work efficiency and productivity.
Digital Signatures VS. Electronic Signatures
Which Is Your Choice?

Digital Signatures

Create a specific signature with a unique digital ID.
Tamper evident through a unique identifier issued by CA and self-signed certificates.
Use For:
High-security, compliance-driven, and regulated transactions.
Use In:
Property purchase agreements, lease agreements, and mortgage documents.
Electronic health records, medical documents, and consent for surgery
Legal agreements, and court documents.
Loan agreements, financial contracts, fund transfers, and transactions.

Electronic Signatures

Freehand, type text, or insert images as signing annotations in PDFs.
Verify identity with various methods (e.g., email, PIN).
Use For:
Routine, day-to-day business processes, and collaborative workflows.
Use In:
Purchase orders, shipping documents, and supplier contracts.
Employment contracts, onboarding documents, and performance reviews.
Enrollment forms, student agreements, and permission slips.

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