Build and validate accessible PDFs — PDF/UA (ISO 14289), tagged PDF, WCAG 2.2 AA — using veraPDF (FOSS validator), PAC 2024 (free GUI), Adobe Acrobat Pro DC accessibility checker, axe / pa11y for HTML; conversion via Word styles → Tagged PDF, Pandoc, LibreOffice. Use when the user says "PDF/UA", "tagged PDF", "accessible PDF", "WCAG 2.2", "screen-reader friendly", "veraPDF", "508 compliance".
