JSignPdf is an open source Java library that allows developers to digitally sign PDF documents programmatically. It supports features like visible and invisible signatures, time stamping, multiple signatures, and more.
JSignPdf: Open Source Java Library for Digital Signing of PDF Documents
JSignPdf allows developers to digitally sign PDF documents programmatically with features like visible/invisible signatures, time stamping, and multiple signatures.
What is JSignPdf?
JSignPdf is an open source Java library that allows developers to digitally sign PDF documents programmatically. It provides an API and components that can be easily integrated into Java applications to add advanced PDF signing capabilities.
Some of the key features of JSignPdf include:
Apply visible and invisible digital signatures to PDFs
Timestamp signatures
Sign multiple times with different signatures
Support for different signature formats like CADES, PADES, XADES
Graphical signature image customization
PDF certificate validation
PDF pre-signing and post-signing verification
JSignPdf handles all the complex PDF signing steps like pre-processing PDFs, computing signature hashes, embedding signature widgets, and finalizing PDFs after signing. It can be used in various use cases like e-invoicing, document and contract signing, automated paperwork, and more.
As it is open source, JSignPdf is free to use and customizable. It is written in Java and thus integrates well into JVM-based applications. Overall, it provides a full-fledged PDF digital signature solution for Java developers to efficiently sign PDFs.
JSignPdf Features
Features
Digitally sign PDF documents
Supports visible and invisible signatures
Time stamping of signatures
Apply multiple signatures to a PDF
Validate existing digital signatures
Free and open source
Pricing
Open Source
Free
Pros
Easy to integrate into Java applications
Good documentation and examples
Active development and support
Does not require paid libraries like iText
Can be used for free
Cons
Limited to Java ecosystem
Not as full-featured as paid solutions like Adobe Acrobat
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