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PDF/UA Compliance Automation Tool

Overview

This tool provides automated PDF/UA compliance processing using the PDFix SDK. It performs tagging, validation, and correction of PDF documents to meet PDF/UA or WCAG 2.2 accessibility standards.

Features

• Automatic PDF tagging - Adds proper structure and tags for accessibility
• PDF/UA validation - Checks compliance with PDF/UA standards
• Automated fixes - Corrects common compliance issues
• Validation reporting - Provides detailed XML reports of compliance issues

Requirements

• Python 3.6+
• PDFix SDK (properly installed and licensed)
• Java Runtime Environment (for validation tool)
• greenfield-apps-1.27.0-SNAPSHOT.jar validation tool veraPDF

Installation

1. Clone this repository and initialize python virtial environemnt

   Linux / macOS

   python3 -m venv .venv
   source .venv/bin/activate

   Windows:

   python3 -m venv .venv
   env/Scripts/activate

2. Install dependencies:

   pip install pdfix-sdk

   or

   pip install -r requirements

3. Ensure Java is installed and in your PATH

4. Place the validation JAR file in the expected location:

   {project_root}/validation/greenfield-apps-1.27.0-SNAPSHOT.jar
   

Usage

Command Line

python main.py

Processing Workflow

1. Opens the input PDF (pdf/example.pdf)
2. Automatically tags the document
3. Performs initial validation (saves to pdf/validate.pdf)
4. Applies necessary fixes based on validation results
5. Performs final validation (saves to pdf/tagged.pdf)

Customization

Modify these paths in main.py as needed:

inputPath = "pdf/example.pdf"
validatePath = "pdf/validate.pdf"
taggedPath = "pdf/tagged.pdf"

Code Structure

File	Description
main.py	Main execution script
pdf.py	Contains PDF processing functions (autotagPdf, fixUaClauses)
validation.py	Handles PDF/UA validation and report parsing

Key Functions

• autotagPdf(doc: PdfDoc) - Adds accessibility tags to PDF
• fixUaClauses(doc: PdfDoc, rules: list) - Applies fixes for specific PDF/UA clauses
• validatePdf(doc: PdfDoc, pdfPath: str) - Validates PDF and returns rule violations
• runJavaValidation(pdfPath) - Executes Java validation tool
• parseValidationReport(xmlReport: str) - Parses XML validation results

Supported PDF/UA Clauses

The tool currently handles fixes for these PDF/UA requirements:

• Clause 5 (PDF/UA identification)
• Clause 7.1 (Document title display)
• Clause 7.2 (Language specification)

For more clauses and accessibility actions visit https://pdfix.net/products/pdfix-sdk/actions/

Error Handling

The script will:

• Exit with code 1 on critical errors
• Print detailed error messages to stderr
• Preserve validation reports for troubleshooting

Output

• Processed PDF files in the pdf/ directory
• Validation reports printed to console
• Final compliance status message

License

PDFix License