Digital reading should provide an effective experience regardless of how a reader accesses content. However, readers who are blind or have low vision, people with dyslexia or other print disabilities, and those using assistive technologies can encounter barriers when eBooks are not properly structured.
Issues such as missing alt text, incorrect reading order, inaccessible navigation, poorly structured tables, and inadequate semantic markup can make digital publications difficult to understand or navigate.
At Kryon Publishing, we support publishers, academic institutions, and content owners in creating accessible EPUB content designed for a wider range of readers and reading technologies.
EPUB 3 provides a strong foundation for accessible digital publishing, but using EPUB 3 alone does not automatically make an eBook accessible. Accessibility depends on how the content is structured, described, navigated, and tested.
Important elements include:
Semantic structure - appropriate markup for headings, sections, lists, chapters, and other content elements.
Alternative text - meaningful descriptions for relevant images, figures, charts, and diagrams.
Logical reading order - content presented in an appropriate sequence for assistive technologies.
Accessible navigation - structured tables of contents, headings, and landmarks.
Language information - appropriate language and reading-direction markup.
Accessible tables and mathematics - structured tables and technologies such as MathML for complex mathematical content.
Accessibility metadata - information describing the accessibility features available within the publication.
Together, these practices can help EPUB publications align with recognized accessibility guidance, including WCAG and the EPUB Accessibility specification.
Accessibility is becoming an increasingly important consideration across digital publishing, education, libraries, and content distribution.
Publishers need to consider not only how an eBook appears visually, but also how effectively readers using different technologies can perceive, understand, navigate, and interact with the content.
Accessible publishing can:
Support readers using screen readers, refreshable Braille displays, keyboard navigation, and text-to-speech technologies.
Help libraries and educational institutions provide digital resources to a wider range of users.
Improve navigation and usability across different reading environments.
Help publishers address accessibility requirements across markets and distribution platforms.
Accessibility requirements can vary by jurisdiction and platform. Building accessibility into the publishing workflow from the beginning can help organizations prepare content for a broader range of readers and requirements.
Existing EPUB files can be assessed for potential accessibility issues involving structure, navigation, images, semantic markup, metadata, tables, mathematics, and reading order.
Identifying these issues provides a foundation for effective remediation.
Semantic markup helps assistive technologies understand the hierarchy and purpose of content.
Kryon Publishing supports structured EPUB production using appropriate headings, sections, lists, document structures, and reading-order logic to create more predictable and navigable publications.
Meaningful visual content should be appropriately described for readers who cannot access the visual information directly.
Alt text and image descriptions can communicate the purpose and information contained in photographs, illustrations, charts, figures, and diagrams. Descriptions should reflect the context and function of each visual, rather than simply repeat a caption.
Readers should be able to navigate efficiently without progressing through every section sequentially.
Structured tables of contents, headings, landmarks, and appropriate navigation elements help readers using assistive technologies locate chapters, sections, and other important content.
Academic, scientific, technical, and educational publications frequently contain complex information.
Structured table markup can preserve relationships between headers, rows, and columns. MathML can provide machine-readable mathematical expressions rather than relying solely on images.
These approaches help retain the meaning and structure of complex content in accessible digital formats.
Accessibility metadata communicates information about the accessibility features and characteristics of a publication.
Appropriate metadata can help libraries, distributors, platforms, and readers understand which accessibility features are available and how the publication can be accessed.
Accessibility should not rely solely on automated validation.
Quality assurance can include structural validation, accessibility checks, navigation review, metadata verification, and appropriate manual testing.
Combining automated checks with manual review can help identify issues that automated tools alone may not detect.
Accessibility works best when it is considered throughout the publishing process rather than treated as a final-stage correction.
Semantic markup, logical navigation, meaningful metadata, accessible images, and consistent content structure can contribute to digital publications that are easier to navigate and use.
Building accessibility into production from the beginning can also reduce the effort required to remediate large collections later.
Creating an accessible EPUB requires more than converting a source document into an eBook. It requires careful attention to semantic structure, navigation, alt text, tables, mathematics, metadata, accessibility validation, and quality assurance.
Kryon Publishing supports publishers, academic institutions, and content owners in creating and remediating EPUB publications for more accessible digital reading experiences.
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An accessible EPUB is structured to support readers using screen readers, Braille displays, and other assistive technologies.
No. Accessibility depends on appropriate structure, semantic markup, navigation, alt text, metadata, and validation.
Accessible EPUB publications commonly follow WCAG and EPUB Accessibility specifications, although requirements can vary by jurisdiction and platform.
Alt text helps communicate meaningful visual information to readers who cannot perceive the image directly.
Yes. Existing EPUBs can be assessed and remediated to improve structure, navigation, alt text, metadata, and overall accessibility.
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