Product
Compare
Each column is a product or checker; each row is the same topic across all of them. We will add more columns as we publish additional comparisons — the layout is meant to scale without rewriting the page.
Tool comparison matrix
Summaries are for orientation only; confirm details on each vendor’s site before you standardize on a tool.
| Topic | UnifyComply | PAC (PDF Accessibility Checker) — axes |
|---|---|---|
| Official resources | ||
| Structural / standards lens | Internal checks and remediation gating focus on machine-readable structure (tags, marked content, basic roles) as inputs to honest delivery — we do not equate that with legal certification. | PAC foregrounds the invisible tag layer: WCAG- and PDF/UA–oriented check sets, and the idea that wrong tags are as problematic as missing tags (see their “Understanding” material). |
| Primary use | API- and UI-driven pipelines: scan, optional remediation pass, gated download when internal checks pass. | Deep, local inspection of structure and standards-oriented reporting on a workstation. |
| Deployment | Service-backed; PDF bytes processed in memory for the request. | Desktop install; files stay on your machine. |
| Operating system | Browser-based workflow for authors; same experience on macOS, Linux, and Windows — no desktop installer tied to a single OS. | Windows 10 / 11 for the standard PAC desktop build (.NET 4.8+ per their download page). No official Mac or Linux desktop build today; mixed-OS teams typically use a Windows VM, a separate Windows machine, another axes product (e.g. browser-based options, if applicable), or a different checker. |
| Certification claims | No ADA, WCAG, or PDF/UA certification claims; outputs support accessibility work, not formal sign-off. | Checker / visibility into structure; not a substitute for legal or policy “certification” language unless your process defines it that way. |
| Remediation | Best-effort structural tagging / remediation paths with strict delivery gating. | Focused on evaluation; repair happens in your authoring or PDF tools. |
| Integrations | REST API, CMS-oriented integrations, batch flows. | Manual file workflow; strong fit for desktop QA and authors on Windows. |
New tools join the matrix as additional columns with the same rows filled in; row wording may be tightened per column when needed.