Understand and fix PDF accessibility issues based on the Matterhorn Protocol, the definitive test suite for PDF/UA compliance. This guide covers all 31 checkpoints with clear explanations and actionable remediation steps.
These checkpoints address the most severe accessibility barriers. Fix these first.
Important checkpoints that significantly impact accessibility.
Checkpoints that improve accessibility but may be less common.
Edge cases and specialized content types.
Beacon scans your PDFs for Matterhorn Protocol violations and shows you exactly what to fix.
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