Crius Group

Digital Services

Accessible ePubs

EAA-compliant, accessible ePub3 delivered by default.

We produce accessible ePub3 that meets the European Accessibility Act requirements (semantic structure, logical reading order, navigable table of contents, alt text, MathML where applicable, and accessibility metadata) as the default output, not as an exception or upgrade. The EAA applies to ebooks placed on the EU market from 28 June 2025, affecting most commercial publishers selling into Europe.

Pain points we solve

  • EAA compliance deadline of 28 June 2025 creating uncertainty
  • Existing back catalogue that is not yet accessible
  • Lack of clarity about what technical accessibility requirements apply

How it works

  1. 1Assess source and identify accessibility gaps
  2. 2Produce accessible ePub3
  3. 3Validate against EPUB Accessibility 1.1 and WCAG 2.1
  4. 4Deliver with accessibility metadata and ONIX

Good to know

Accessible ePub3
An ePub3 file that conforms to the EPUB Accessibility 1.1 specification and meets WCAG 2.1 Level AA success criteria. Key features include a logical reading order, semantic HTML structure, alt text for images, MathML for equations, and accessibility metadata. Required for ebooks sold on the EU market under the European Accessibility Act from 28 June 2025.

What is the European Accessibility Act and how does it affect ebook publishers?

The European Accessibility Act (EAA) is EU Directive 2019/882. It requires that ebooks placed on the EU market from 28 June 2025 meet accessibility standards, specifically the EPUB Accessibility 1.1 specification, which references WCAG 2.1. Publishers who sell ebooks in EU member states must ensure new titles are accessible. Back catalogue titles placed on the market after the deadline are also covered.

What is EPUB Accessibility 1.1?

EPUB Accessibility 1.1 is a specification published by the W3C that defines how an ePub3 file should be structured to be usable by people with disabilities, including those using screen readers or other assistive technology. It references WCAG 2.1 for content requirements and adds ebook-specific requirements such as reading order, navigation, and accessibility metadata in the package document.

Related

Frequently asked questions

  • What makes an ePub accessible?

    An accessible ePub3 has a logical reading order, semantic structure, a navigable table of contents, descriptive alt text for images, accessible tables and maths encoded in MathML, and accessibility metadata declared in the package document and ONIX feed. It must also meet WCAG 2.1 Level AA success criteria.

  • Does the European Accessibility Act apply to my ebooks?

    The European Accessibility Act applies to ebooks placed on the EU market from 28 June 2025. Most commercial publishers selling into the EU are in scope. Microenterprises (fewer than 10 employees and under €2 million annual turnover) are exempt. See our accessible eBooks knowledge hub for a full scope guide.

  • Can you remediate our existing back catalogue to meet the EAA?

    Yes. We assess each title against the EPUB Accessibility 1.1 standard, identify gaps, and produce a remediated accessible ePub3. We can handle this at scale, prioritising titles by sales volume or distribution reach.

Ready to start a production line?

Log in to the portal to submit a request, or reach out and we'll set things up together.