Upload a PDF. Get back an accessible one.
No manual tagging in Acrobat. Our pipeline reads the document, rebuilds its structure, and validates the result — automatically.
Upload
Drop in your PDF. One credit covers one page, and credits roll over.
Detect & OCR
Scanned or image-only? We spot it and recover the text before tagging.
AI structures it
Multi-stage AI finds headings, lists, tables, figures — and the right reading order.
Validate
Every PDF/UA condition checked against the Matterhorn Protocol, with a clear list of what's handled and what's left.
Deliver
Download the tagged PDF plus a coverage report you can keep on file.
Want to see it in action? View Demo Page →
Every document is tagged to PDF/UA-1 (ISO 14289-1) — the technical standard for accessible PDFs — giving your files the groundwork to get ready for the requirements you answer to:
Every Output Includes
- ✓Correct reading order — content flows the way it should
- ✓Semantic structure — headings, lists, tables, and links properly tagged so assistive technology understands them
- ✓Alternate text — important images, figures, and graphics described in context with the page
- ✓Validation report — every PDF/UA condition checked against the Matterhorn Protocol so you can see what's handled and what needs review
- ✓Downloadable coverage report — your document checked against every condition of the PDF/UA standard — what was addressed, what needs your review, and the evidence for each — as its own PDF