QPDF version 10.5.0

Welcome to the QPDF documentation! For the latest version of this documentation, please visit https://qpdf.readthedocs.io.

Contents:

• What is QPDF?
• License
• Downloading QPDF
• Building and Installing QPDF
  • System Requirements
  • Build Instructions
  • Building Documentation
  • Crypto Providers
• Notes for Packagers
  • Build Options
  • Packaging Documentation
• Running QPDF
  • Basic Invocation
  • Shell Completion
  • Basic Options
  • Encryption Options
  • Page Selection Options
  • Overlay and Underlay Options
  • Embedded Files/Attachments Options
  • Advanced Parsing Options
  • Advanced Transformation Options
  • Testing, Inspection, and Debugging Options
  • Unicode Passwords
• QDF Mode
• Using the QPDF Library
  • Using QPDF from C++
  • Using QPDF from other languages
  • A Note About Unicode File Names
• Weak Cryptography
• QPDF JSON
  • Overview
  • JSON Guarantees
  • Limitations of JSON Representation
  • JSON: Special Considerations
• Design and Library Notes
  • Introduction
  • Design Goals
  • Helper Classes
  • Implementation Notes
  • Casting Policy
  • Encryption
  • Random Number Generation
  • Adding and Removing Pages
  • Reserving Object Numbers
  • Copying Objects From Other PDF Files
  • Writing PDF Files
  • Filtered Streams
  • Object Accessor Methods
• Linearization
  • Basic Strategy for Linearization
  • Preparing For Linearization
  • Optimization
  • Writing Linearized Files
  • Calculating Linearization Data
  • Known Issues with Linearization
  • Debugging Note
• Object and Cross-Reference Streams
  • Object Streams
  • Cross-Reference Streams
  • Implications for Linearized Files
  • Implementation Notes
• Release Notes
• Acknowledgments