Support & Help

Our new, transparent pricing structure (from 2024):

• Free Trial: 25 pages once free to test (single-page processing only, max. 10 pages/document)
• Starter (99€/month): 250 pages, single-page and batch processing
• Pro (199€/month): 600 pages, extended features, accessible text version and PDF/UA Hybrid
• Enterprise (499€/month): 1500 pages, batch processing, PDF/UA Hybrid, Secure Local Mode

Consumption-based billing:

• Each processed PDF page counts as 1 page from the monthly quota
• Standard mode: Text extraction only = 1 page per PDF page
• Compact/Detailed: AI analysis = 1 page per PDF page
• Vision mode: Image analysis = 1 page per PDF page (Pro/Enterprise only)

Example: A 10-page PDF uses 10 pages from your monthly quota, regardless of the selected analysis mode.

Batch processing shows the progress of each individual page:

PDF/UA (PDF Universal Accessibility) is the international standard (ISO 14289-1) for accessible PDF documents.

The key difference:

The technical foundation:

Our singularly developed server technology embeds a complete semantic structure layer directly into the PDF – in accordance with ISO 14289-1 (PDF/UA standard). This layer is invisible to the viewer but fully readable by screen readers and validation tools.

PDF/UA Hybrid combines the original visual layout as a protected layout layer with the accessible text version. This preserves design, line breaks and corporate layout while screen readers use the accessible structure.

Some PAC Quality and AI notes additionally use heuristics to compare the visible layout geometry with the structure tree. In PDF/UA Hybrid files, PAC can therefore show notes even though the normative PDF/UA and WCAG checks have passed.

A typical example is the Quality note “Link in text does not have a Link element”. This can occur when PAC detects link-like text in the visual background layer. The link semantics that matter for screen readers, keyboard navigation and PDF/UA are stored in the accessible structure layer of the document.

This means: if the PDF/UA, WCAG and ISO checks are green and the links work in the accessible structure, this Quality note must be assessed in context. It can result from the PDF/UA Hybrid architecture.

In addition to the normative PDF/UA, WCAG and ISO checks, PAC also includes AI-assisted quality notes. These AI notes do not only validate the formal PDF/UA structure. They heuristically assess whether the visible layout, semantic structure and expected reading logic appear to match.

With PDF/UA Hybrid, PAC may therefore show AI warnings even though PDF/UA, WCAG and ISO have passed. This is caused by the specific architecture: the visible original layout remains in a separate background layer, while screen readers use the separate accessible text version.

An honest assessment:

Our AI automatically handles ~90% of the accessibility work – structure tags, reading order, alt-texts for images, table descriptions. The result passes PDF/UA certification (PAC-3).

5 decisive advantages at a glance:

• ✅ No layout loss – print approvals and corporate design remain unchanged
• ✅ One single file – no version confusion, no “_accessible” suffix, no complexity
• ✅ Scalable – process hundreds of PDFs automatically, no manual effort per document
• ✅ Legally compliant – meets EAA 2025, BITV 2.0 and EN 301 549 simultaneously
• ✅ For all user groups – sighted users see exactly the original, screen readers access the full structured layer

Comprehensive security measures:

Highest data security for sensitive documents:

This message appears when your monthly page quota has been used up:

Possible causes and solutions:

PAC 2024 (PDF Accessibility Checker) and veraPDF are both recognized tools for checking PDF accessibility — but they work in fundamentally different ways:

veraPDF tests precisely against the ISO standard — a 100% result means the document fully satisfies PDF/UA-1.

PAC 2024 adds heuristic and AI-powered checks: it analyses the visual layout, detects potential structural issues, and provides guidance — even when no normative violation exists.

This warning appears when PAC 2024 detects Form structure elements in a PDF’s structure tree that it cannot unambiguously map to a visible form field.

Why does it appear in PDF/UA Hybrid?

PDF/UA Hybrid has a distinctive architecture: the visible layer is the original PDF rendered as an image layer — the accessibility layer is the embedded accessible text version (PDF/UA). Form widgets from the original document are linked into the structure tree via /Form structure elements, as required by PDF/UA-1 (Matterhorn Protocol, checkpoint 14-003).

PAC sees the Form elements in the structure tree but cannot reconcile them with the visual image layer — hence the warning. This is not an error, but an inherent characteristic of the hybrid format.

PAC 2024 includes an AI-powered visual analysis that classifies text in the PDF by its visual appearance. When the AI finds text that looks like a heading, it checks whether a corresponding <H> structure element exists in the structure tree.

Yes — a 100% veraPDF result means full conformance with ISO 14289-1 (PDF/UA-1), the binding standard for accessible PDFs.

PAC 2024 warnings (not errors!) are heuristic advisories. They flag potential best-practice deviations but do not constitute standard violations:

• 🔴 veraPDF FAIL = ISO violation → must be fixed
• 🔴 PAC Error (red) = serious issue → should be fixed
• 🟡 PAC Warning (yellow) = advisory → review in context, often unavoidable
• 🟢 PAC Pass = no finding

PDF/UA Hybrid files can produce 0 veraPDF errors and still show individual PAC warnings. These notes must be reviewed in the context of the document.

Due to their dual-layer architecture, PDF/UA Hybrid files can produce characteristic PAC findings:

✅ Quick verification checklist:

• ☑ veraPDF: 100% (PDF/UA-1 Pass)
• ☑ PAC: no red errors (yellow warnings acceptable)
• ☑ Screen reader test: content logically readable, form fields announced
• ☑ Document language set (e.g. de, en)
• ☑ Document title present in metadata