A PDF can look clear on a screen and still be difficult to navigate with assistive technology. This guide answers six practical questions using university guidance, W3C techniques and a research preprint. It is a starting checklist, not an accessibility certification.

Why can I read a scan but cannot select its words?

A scan may contain pictures of letters rather than actual text. That problem appears in a public question about extracting text from a PDF. Our answer: first try selecting a short sentence. If selection fails, do not assume that converting the file to Word will recognize the image.

OCR can add recognized text, but recognition mistakes need review. W3C’s PDF OCR technique also calls for checking the result. Filestation’s PDF to Text extracts existing text; it does not perform OCR. Ask the document creator for the original accessible document or use an appropriate OCR tool before text extraction.

Does searchable text make a PDF accessible?

No. Searchability is one useful property, not a complete assessment. Harvard’s accessible document guidance discusses meaningful headings, document metadata, descriptions for informative images and adequate contrast. A reader needs to understand the structure as well as the words.

For example, a chart may have selectable axis labels but no explanation of what its data means. A report may have large bold titles that are not identified as headings. Review these separately. Filestation currently does not create or repair accessibility tags, write image alternatives into a PDF structure, or validate conformance. Visual page organization is not a substitute for that work.

Why does a screen reader read columns in the wrong order?

Visual position and logical reading sequence can differ. W3C’s reading-order technique explains that PDF structure influences reading and keyboard navigation. Complex layouts need particular attention.

Check a representative page containing columns, sidebars or tables with the assistive technology your audience uses. If the reading sequence jumps between unrelated passages, repair the source structure or use a suitable PDF accessibility editor and retest. Dragging whole pages into a new order in Organize PDF changes their sequence; it does not repair the reading order inside each page.

Should I fix the Word document or the exported PDF?

Start with the editable source when you have it. Harvard’s PDF creation guidance recommends building accessibility into the source and preserving it during conversion. Printing to PDF can discard structural information that a suitable export process would retain.

Keep both the source and the final PDF. After a revision, regenerate and review the actual exported copy. If you only have a PDF, request the source where possible or arrange remediation using a tool designed for that purpose. Do not run repeated format conversions expecting missing structure to reappear automatically.

Is a PDF always the best way to publish information?

No. Stanford’s accessible document guidance recommends considering a web page and reviewing document inventories, including frequently accessed and outdated files. Its guidance also highlights mobile usability.

For an announcement or a short set of instructions, publishing the information directly on a web page may be more convenient for readers. A downloadable document may still be needed for a specific workflow. Check your institution’s actual requirements rather than treating another university’s local policy as your own. If a PDF is required, make its purpose, version and download link clear.

Can an AI checker certify the document for me?

Do not treat one automated result as a complete review. The abstract of a 2025 PDF accessibility research preprint describes evaluation across several accessibility criteria and differing capabilities between automated methods. It proposes combining automated and human approaches. We reviewed the abstract, not a full independent reproduction of the study.

Use relevant automated checks to find issues, then verify the document’s actual reading and navigation experience. A clean visual preview or a successful export alone does not establish accessibility. Keep a record of what was checked and any unresolved issues, especially when the document is part of an institutional process.

Before sharing your document

  • Keep the editable original and identify the intended audience.
  • Check actual text, structure, reading sequence and images using appropriate tools.
  • Inspect the final saved copy after any edit or conversion.
  • Follow your institution’s accessibility review process when one applies.

For practical file problems, continue with PDF text, size and download troubleshooting. Our 100 PDF questions covers everyday organization and export tasks. These are independent explanations; the cited institutions do not endorse Filestation.