PDF remediation and PDF/UA accessibility
A PDF is not accessible just because the text is visible.
DEMA remediates PDFs so assistive technologies can understand the document structure: headings, paragraphs, lists, tables, images, links, language, reading order and navigation. The service can be integrated with multilingual DTP so accessible output is considered during production rather than added as an afterthought.
A PDF can look correct and still be unusable to a screen reader if tags, reading order, headings, tables, alt text or language metadata are wrong.
Accessibility exists underneath the visual layout.
A sighted reader can infer columns, headings and table relationships from position and design. Assistive technology needs that logic encoded explicitly. DEMA works with PDF/UA-oriented structure and accessibility checks so the semantic order matches the intended reading experience.
Structure & tags
Headings, paragraphs, lists, tables and other content need the correct semantic roles.
Reading order
The logical sequence must match the visual information flow, especially in multi-column or graphic-heavy documents.
Non-text content
Images, charts and diagrams need appropriate alternative descriptions or artifact handling.
Navigation & metadata
Language, links, bookmarks and metadata help assistive technology identify and navigate the document.
What is reviewed inside an accessible PDF.
Document structure
Build a coherent semantic hierarchy.
Tables & graphics
Make complex visual information interpretable.
Navigation
Help users move through the file.
Document settings
Support correct assistive-technology behaviour.
Accessibility requirements are now a live procurement and publication issue.
The European Accessibility Act has applied since 28 June 2025, so accessibility is now part of procurement and publication decisions. For PDF documents, the relevant technical framework is PDF/UA (ISO 14289) together with digital accessibility requirements such as WCAG 2.1 AA and EN 301 549, where applicable. WCAG 3.0 is still being developed and is not yet a binding requirement.

Important
DEMA can remediate and test documents against the agreed technical requirements. Whether a specific organisation or document is legally in scope depends on the applicable law, product or service and market; this information is not legal advice.
The four principles of accessibility.
Accessible documents rest on the same four principles as accessible websites: Perceivable, Operable, Understandable and Robust. PDF/UA and WCAG turn them into concrete technical checks for every file.
Perceivable
Text, images, charts and tables must be available to everyone, including people using screen readers. Alt text and correct tags make the content perceivable.
Operable
Readers must be able to move through the document with a keyboard or assistive technology. Bookmarks, links and a logical tab order keep navigation smooth.
Understandable
Content must be clear and predictable. A correct reading order, a defined document language and consistent headings help every reader follow the document.
Robust
The file must work reliably across PDF readers and assistive technologies. Standards-compliant tagging, as PDF/UA requires, keeps it interpretable now and in the future.
Remediation applies these principles inside the file, so the document works for every reader.
Accessibility can be integrated with localisation and DTP.
Audit the PDF
Identify structural, reading-order, contrast, table, image, link, form and metadata issues.
Repair the source or PDF structure
Where appropriate, rebuild or correct the source in Word/InDesign or remediate the PDF tags directly.
Add semantic information
Create headings, lists, table structures, alt text, artifacts, language settings and navigation.
Verify reading order and usability
Check the document with accessibility tools and review how the content is exposed to assistive technology.
Deliver and document
Provide the remediated file and agreed validation evidence; for multilingual projects, repeat the accessibility checks on the final target-language output.
The cheapest place to solve accessibility is often before final export.
If a multilingual document is already being rebuilt in FrameMaker, InDesign or another DTP environment, accessibility requirements can be considered at the same time. This avoids translating first, laying out second and remediating a structurally poor PDF third.
Manuals & guides
Technical documentation can combine translation, DTP and PDF remediation in one production chain.
Financial documents
Statements, product information and reports may need both multilingual accuracy and accessible final PDFs.
Marketing & public documents
Brochures, reports and public-facing content can preserve visual design while receiving semantic structure for assistive technology.
What remediated PDFs do for your organisation.
Accessible documents are not only a compliance task. They make your content easier to use, easier to find and available to a much wider audience.
Improved user experience
Remediated PDFs are easier to read and navigate for everyone, whatever assistive technology, device or reading preferences they use.
Inclusive audience reach
According to the World Health Organization, 16% of the world’s population experiences significant disability. Accessible documents make sure your content reaches these readers too.
Better SEO performance
Tagged, well-structured PDFs with clear titles, headings and text alternatives are easier for search engines to understand, so your documents are easier to find.
Lower compliance risk
Documents remediated and tested against PDF/UA and WCAG requirements help you meet accessibility expectations in public procurement and under the European Accessibility Act.
PDF remediation: make your documents accessible to everyone.
Download our free report to learn how PDF remediation works and how it helps your organisation publish documents that everyone can use.

A remediation quote depends on structure, not just page count.
Can you remediate a PDF if we do not have the source file?
Yes, but the method and effort depend on how the PDF was produced. Some files are best repaired directly; others may need partial reconstruction.
Will remediation change the visual design?
Often the visual appearance can remain substantially the same, though contrast or structural problems may require small design adjustments.
Do translated PDFs need to be checked again?
Yes. Translation and DTP can change reading order, language settings, alt text and layout relationships, so accessibility should be verified on the final target-language file.
Can you combine PDF remediation with translation?
Yes. DEMA can connect translation, DTP and remediation so accessibility is part of the output specification rather than a separate project at the end.
Send the PDF, not only the page count.
We can review how the document was built, identify the main accessibility barriers and propose whether remediation should happen in the PDF itself or upstream in the source/DTP workflow.
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