Build in Public
Why We're Building DeepTag: A PDF Remediation Workspace
Not an auto-tagger, not another checker — a workspace that puts the tag tree, table structure and screen-reader output in one view.
Read article → ComplianceEuropean Accessibility Act 2025: What It Means for Your PDFs
The EAA has applied since June 2025. Here's who it covers, why your PDF library is in scope, and how to avoid the penalties.
Read article → FundamentalsPDF/UA vs Tagged PDF: What's the Difference?
"It's already tagged" is the most common accessibility misconception. Here's why tagged ≠ accessible, and what PDF/UA actually requires.
Read article → How-toHow to Make a Scanned PDF Accessible (OCR + Remediation)
To a screen reader, a scanned PDF is a blank page. Here's the full process — OCR, structure, and validation — to fix that.
Read article →More guides coming regularly. Have a question you want answered? Ask us and it might become the next article.