Monitoring PDFs and Downloadable Documents for Accessibility
Guides, size charts, and manuals in PDF are part of the store. How to check downloads for barriers and decide what needs an HTML alternative.
Shoppers download size guides, care manuals, warranty terms, and assembly instructions as part of buying. A PDF with no text layer, scanned images, or reading order chaos is a barrier that never appears in a page scan, so many monitoring setups miss an entire class of content completely.
This guide covers an inventory approach: find every download the store offers, check the ones that matter most, and decide where an HTML version is the honest fix instead of a repaired PDF.
Inventory before you audit
List downloads by where they are linked: product pages, help centre, order emails, and packaging inserts with QR codes. The email and packaging links are the ones teams forget, and they often point to the oldest files. Count and date each file before judging any of them.
Prioritise by task. A size guide that decides a purchase and a warranty document that decides a claim outrank an old lookbook. Accessibility effort on documents follows the same rule as pages: journeys first, archive later.
What to check in a priority PDF
Check for a real text layer, a sensible reading order, tagged headings where the format supports them, meaningful file names, and contrast in any essential diagrams. Test with a screen reader on at least one priority file rather than trusting a checker score alone.
Forms inside PDFs deserve special attention. A returns form that must be printed, filled by hand, and posted excludes shoppers who could complete an equivalent web form in minutes. Where a form collects information, the web version is usually the accessible route.
When HTML is the better answer
Documents that change often, are read on phones, or carry task critical information usually belong in HTML: size guides, delivery information, and returns instructions. HTML is searchable, zoomable, translatable, and covered by your normal page monitoring, which a PDF library never is.
Keep the PDF where print fidelity genuinely matters, such as a certificate or a label, and offer both formats with clear link text stating the format. A link that just says download, with no format or size, surprises the shopper who opens it on a phone.
Put downloads into the monitoring routine
Add new downloads to the inventory at upload time, with an owner and a check date, the same way new templates enter page monitoring. Most document barriers are born at upload: an untagged export from a design tool, saved and linked in an afternoon.
Review the inventory quarterly and remove or replace files that are superseded. Dead documents with old prices and old terms are an accuracy problem as well as an accessibility one, and peaks send shoppers to exactly those forgotten files.
Related reading
If this topic is useful, these earlier guides go deeper on connected questions: Cutting Accessibility Alert Fatigue Without Missing Blockers, Accessibility Alerts When Apps Update Behind Your Back, and Routing Accessibility Alerts to the Person Who Can Fix Them.
Frequently asked questions
Why are PDFs missed by accessibility monitoring?
Page scanners check HTML pages. Downloads sit outside that crawl unless someone inventories them, so barriers in guides, manuals, and forms persist invisibly. The fix starts with a list of every download the store links to, including email and packaging links.
What matters most when checking a PDF?
A real text layer, logical reading order, meaningful headings and file name, and diagrams that do not carry essential information by image alone. For forms, ask whether a web form should replace the PDF entirely.
Should every PDF become an HTML page?
No. Print critical documents can stay as PDF. Task critical, frequently changing, or phone read information such as size guides and returns instructions usually serves shoppers better in HTML, with the PDF offered as a clearly labelled alternative.
How do I stop new inaccessible PDFs appearing?
Add an upload checkpoint: owner, check date, and a quick text layer and reading order test before linking. Most document barriers arrive at upload time from design tool exports, so that single gate prevents the majority.