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  3.   Android via Java
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Digitally Sign PDF File Online or using Android App

Develop powerful android based PDF document signing applications. Freely add digital signature into various documents including PDF files online via app with instant download.

PDF Signature via Python PDF Signature via C# .NET PDF Signature via Java PDF Signature via C++

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Add Electronic Signature into PDF Files Online

  1. Upload PDF files to sign digitally
  2. Add text for signature or upload signature image
  3. Click the “Sign” button
  4. Download the signed PDF file

Digitally Sign PDF File via Android App

  1. Add Java library reference into your project
  2. Load the PDF file via Document class object
  3. Instantiate the PdfFileSignature with object as parameter
  4. using PKCS7 class object to load the certificate file and password
  5. Use the sign() method to sign the document
  6. Save the signed file
 

Java Code : Add Digital Signature in PDF Files

 
 

Develop E-Signature Application for Android

Need to develop android script or utility app to easily sign multiple PDF files electronically? With Aspose.PDF for Android via Java , child API of Aspose.Total for Android via Java , any android developer can integrate the above API code to program eSigning app for signatures across documents. Powerful android library for document signing, supports many popular formats including PDF format.

PDF eSignature library for Android

System Requirements

  • Android API 31 and 32
  • Android 4.0 and above
  • Android Studio and SDK tools

For more details about optional package dependencies, such as JogAmp JOGL, Harfbuzz font engine, Java Advanced Imaging JAI please refer to [Product Documentation](https://docs.aspose.com/pdf/java/system-requirements/).

Explore File eSignature Options with Android

Sign DOC (Microsoft Word Binary Format)
Sign DOCX (Office 2007+ Word Document)
Sign Excel
Sign ODP (OpenDocument Presentation Format)
Sign ODS (OpenDocument Spreadsheet)
Sign ODT (OpenDocument Text File Format)
Sign PDF (Portable Document Format)
Sign Powerpoint
Sign PPT (PowerPoint Presentation)
Sign PPTX (Open XML presentation Format)
Sign Word
Sign XLS (Microsoft Excel Binary Format)
Sign XLSX (Open XML Workbook)