sign PDF using Java

Signing PDFs with a digital certificate ensures that the document is genuinely from you and hasn’t been altered. It’s like a digital seal that guarantees the authenticity of your files. Let’s embark on a Java-powered adventure as we delve into signing PDF files with ease. In this article, we will discover the art of digital certificates and their role in seamlessly signing PDFs using Java. Follow the steps to unveil the Java code that empowers you to effortlessly sign PDFs with certificates.

Java API to Digitally Sign PDF Files

Elevate your document security with GroupDocs.Signature for Java API! This powerful tool empowers you to seamlessly incorporate digital signatures, ensuring the integrity and authenticity of your files.

Download and Integration:

  1. Visit the GroupDocs website and navigate to the New Releases section.
  2. Select GroupDocs.Signature for Java Release.
  3. Download the JAR file(s) or add the following repository and dependencies within your Maven-based application. (The latest release is recommended)
<repositories>
   <repository>
      <id>repository.groupdocs.com</id>
      <name>GroupDocs Repository</name>
      <url>https://releases.groupdocs.com/java/repo/</url>
   </repository>
</repositories>

<dependencies>
   <dependency>
      <groupId>com.groupdocs</groupId>
      <artifactId>groupdocs-signature</artifactId>
      <version>23.12</version>
   </dependency>
</dependencies>

Now quickly move to sign your unsigned documents programmatically.

How to Sign a PDF with a Digital Certificate in Java

Once you’ve got everything ready, it’s just a few steps to sign your documents successfully using Java. Follow these easy steps to sign your document with the digital certificate:

  1. Start by setting up the Signature object with your document:
  2. Create a DigitalSignOptions object and link it to your certificate file:
  3. Adjust sign options like password, position, and page number if needed:
    • Set any additional options like where you want the signature to appear.
  4. Execute the sign method to put your digital signature on the document.

Here’s a simple example of the code that signs PDF documents with a certificate in Java.

Similarly, you can add more options while signing your document. The options include:

  • Background
  • Border Style
  • Contact Info
  • Date signed at
  • Digital signed
  • Font Family
  • Font Size
  • Height
  • Image
  • Location
  • Margin
  • Page Number
  • Reason
  • Rotation
  • Show on All Pages
  • Transparency
  • Width
Signed PDF - Digital Signatures

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Java API for Digital Signatures

Conclusion

In this guide, you’ve discovered how to digitally sign PDFs using a digital certificate in Java. Additionally, tailoring the signature’s appearance is a breeze. Now, take the next step and experiment with crafting your Java application. Create a personalized touch for electronically signing PDFs with digital certificates using Java.

See Also

eSign PDF Documents – Learning Resources

Check out these useful links for further details and resources to explore GroupDocs.Signature API: