Font Fix (PDFix)

Automatically recover missing glyph Unicode mappings in PDFs using OCR – 100% Free,100% Local

PDFix’s Font Fix action solves a critical PDF accessibility problem: documents that display perfectly but fail when users try to validate for PDF/UA compliance. Using advanced OCR recognition, this Docker-based solution automatically detects and repairs missing Unicode mappings in embedded fonts – fixing visually correct text that breaks accessibility, search functionality, and content extraction.

Meet PDFix Desktop Automation in Font Fixing

How It Works: Choose Your Path

For PDFix Desktop Users

Perfect for accessibility professionals, document specialists, and teams who prefer visual workflows.

• Download PDFix Desktop
• 🐳 Install Docker Desktop First!
• Open PDFix Desktop and pull the Font Fix PDFix docker via Action Manager (one-time set up)
• Upload your PDF → External Actions → Fix Fonts (PDFix)

Note: Free unlimited use with PDFix Desktop license

For PDFix SDK Users

Perfect for automated workflows, enterprise document processing, and accessibility remediation pipelines.

• Automated Pipeline Integration
  • Build Font Fix into your document workflows, content management systems, or accessibility remediation pipelines using PDFix SDK.

• SDK Benefits
  • Automated font Unicode recovery in production workflows
  • Integrate with document management systems
  • Batch process unlimited document volumes
  • CI/CD pipeline integration via JSON configuration

Local Processing Benefits

• 100% Local Processing
• No Cloud Dependencies
• No Third-Party Services
• Enterprise-Ready
• Compliance-Safe

The Technology Behind It

• OCR Recognition Engine
  • Font Fix (PDFix) uses industry-standard OCR technology to intelligently infer missing Unicode mappings

• PDFix integration
  • The Dockerized solution provides automated Unicode mapping recovery:
    • Detects missing glyph Unicode mappings in embedded fonts
    • Applies OCR recognition to infer correct character codes
    • Ensures PDF/UA compliance and screen reader compatibility
    • Preserves visual appearance while restoring functionality

Resources

• Getting Started Guide: https://pdfix.net/user-guide-external-actions/
• GitHub: https://github.com/pdfix/action-font-fix-pdfix-docker
• Docker: https://hub.docker.com/r/pdfix/font-fix-pdfix

Action