PDF Accessibility Automation Pipeline

From untagged PDFs to full PDF/UA compliance in four stages

1
Audit
Read existing PDF tags. Detect which documents are untagged and need remediation.
Shipped
use_struct_tree=True
2
Auto-Tag
Generate structure tags for untagged PDFs. Produces Tagged PDF output. Apache 2.0 licensed.
Q2 2026
auto_tag=True
3
Export PDF/UA
Convert Tagged PDF to PDF/UA-1 or PDF/UA-2 for full regulatory compliance.
Enterprise
PDF/UA-1, PDF/UA-2
4
Visual Editor
Accessibility Studio for reviewing and manually fixing tags when needed.
Enterprise
Accessibility Studio
EAA (EU)
Enforced June 2025
ADA / Section 508 (US)
In effect
Digital Inclusion Act (KR)
In effect
Penalties
Up to 4% revenue
PDF Association (Well-Tagged PDF spec)
Dual Lab (veraPDF validation)
Hancom (core development)