Transform your digital content into universally accessible ePub3 publications with SunTec Digital. We help publishers, eLearning institutions, and enterprises with accessible ePub3 conversion and creation support, so your content is not only legally compliant but also genuinely usable by readers with diverse abilities and assistive technology needs. Whether you need to convert legacy files or create “born-accessible” eBooks, we can help while ensuring compliance, usability, and long-term value for your digital assets.
Different regions and platforms enforce different accessibility requirements. Our ePub3 accessibility services help you align with international guidelines and local laws alike, ensuring your content is compliant, usable, and ready for distribution in every major market.
Web Content Accessibility Guidelines (WCAG) 2.2 Level AA standards
Industry-standard Accessibility Specifications
Portable Document Format - Universal Accessibility
US Federal Accessibility Requirements
European Accessibility Standard Compliance
Accessibility for Ontarians with Disabilities Act
Australian Disability Discrimination Act
Our comprehensive service framework ensures your ePub3 publications achieve universal accessibility while maintaining publishing efficiency and content quality across all distribution channels and user interaction methods.
We convert existing content (PDFs, Word, or other file formats) into fully accessible ePub3 pages. Our “born-accessible” ePub3 creation approach builds accessibility in from the start, eliminating the need for costly fixes later while maintaining the highest quality and standard of accessibility.
We design ePub3 content with clear headings, logical reading order, and ARIA markup, enabling assistive technologies like screen readers to interpret the content correctly. A keyboard navigation feature is also added for users who cannot rely on a mouse.
We add alt-text and extended descriptions for images, charts, and diagrams. For audio and video, we provide captions, transcripts, and synchronized text/audio overlays, allowing users to read along, watch with captions, or listen independently.
Complex content is made fully accessible by implementing MathML for equations, structuring tables for screen reader navigation, tagging technical graphics with semantic descriptions, and supporting multilingual text, including right-to-left languages such as Arabic and Hebrew.
Every file is validated with ePubCheck and tested against WCAG 2.2 AA standards, as well as major screen readers. We also embed metadata (ONIX, Schema.org) to describe accessibility features and improve discoverability on digital platforms.
You get comprehensive implementation guides and training documentation to integrate accessibility standards directly into existing publishing pipelines and organizational processes.
Convert your existing ebooks/ePub files to accessible ePub3 with our team. Our trusted workflow is focused on ensuring web-accessible ePub3 AA compliance at every step.
01
Comprehensive analysis of existing assets (PDFs, Word documents, InDesign files, and legacy ePubs) to identify accessibility barriers.
02
Complete reconstruction into web-accessible ePub3 files with semantic HTML5 markup, proper heading hierarchies, and ARIA labels.
03
Meaningful alt-text for images, detailed descriptions for complex graphics, proper table markup, math equations, charts, and embedded accessibility metadata
04
Detailed table of contents, page lists, landmark navigation, and logical reading order that work seamlessly with screen readers and other assistive technologies.
05
Rigorous validation using ePubCheck, screen readers (NVDA, JAWS, VoiceOver), and manual testing across devices and real-world usability testing where necessary.
06
Final ePub3 compliance verification with metadata validation and cross-platform compatibility confirmation before delivery.
Our ePub3 conversion service follows industry standards like HTML5, CSS3, WAI-ARIA, WCAG, and ePub Accessibility 1.1 to make digital books both structured and inclusive. We ensure clear document hierarchy, semantic markup, and efficient navigation for assistive technologies, while also supporting synchronized audio, captions, transcripts, and accessible multimedia playback.
HTML5 semantic elements, including <section>, <article>, <nav>, <aside>, and <figure> to define different parts of documents meaningfully.
ePub3 conversion service aligned with standards such as CSS 2.1, CSS3 modules, and ePub-specific properties to create responsive layouts, high-contrast support, and flexible typography for assistive technologies.
Proper use of headings (h1-h6), aside elements, hidden attributes, and structured markup for lists and tables.
Integrated WAI-ARIA navigation techniques to mark regions and common web structures as menus, primary content, secondary content, and banner information, allowing users to jump between page sections efficiently.
ARIA roles to ensure that interactive elements are recognizable and usable by assistive technologies, regardless of how they are coded.
Digital Publishing WAI-ARIA Module 1.0 implemented to add publishing-specific semantics to ePub3 files, making elements such as footnotes, sidebars, and endnotes more accessible to assistive technologies.
ePub3 ’s media overlay feature, based on SMIL (Synchronized Multimedia Integration Language), to synchronize text with audio, allowing readers to listen while following along with highlighted text.
Pre-recorded audio integration to ePub3 files and support media overlays (text and synchronized audio) using standard formats such as MP3 and AAC. This ensures that readers can listen to the content with or without the highlighted text.
Closed captions (optional), open captions (always visible), transcripts for audio, and detailed text descriptions for visuals such as graphs, charts, and diagrams—meeting WCAG accessibility requirements.
All interactive elements (links, buttons, form controls) made accessible and activatable using only the keyboard, providing logical and consistent navigation order.
MathML implementation for equations, formulas, and scientific notation with full screen reader compatibility and navigational support.
When accessibility requirements meet niche content challenges, you need a partner who can make complex content work for every reader, on every platform. SunTec Digital brings more than 25 years of experience in digital publishing to this challenge, combining technical precision with a deep understanding of how content is created, consumed, and distributed.
We’ve supported global publishers, universities, and organizations in delivering accessible eBooks at scale. Our expertise spans everything from educational and technical content to highly interactive, multimedia-rich publications. We’ve also built our own eReader platform, supporting fixed-layout ePub, audio, video, bookmarks, progress syncing, and offline use, ensuring that accessibility extends beyond conversion into real-world reading experiences.
Trusted for complex, high-visibility projects by leading publishers and academic institutions worldwide.
Skilled in interactive accessibility features, semantic structuring, and metadata optimization.
Proven ability to handle multilingual, multi-format projects across global markets.
End-to-end delivery: conversion, validation, accessibility testing, and publishing workflow integration.
Absolutely. With digital document remediation services, we can efficiently and cost-effectively transform existing PDFs, Word documents, and legacy ePub files into fully accessible, WCAG-compliant ePub3 content.
ePub3 supports advanced accessibility features, including semantic HTML5 markup, comprehensive navigation aids, multimedia alternatives, and embedded accessibility metadata that standard ePub formats cannot provide. ePub3 accessibility services ensure that your digital publications are inclusive and usable for a wider audience, including people with disabilities.
Yes. Our accessible ePub and eBook services involve converting complex academic and technical content, including MathML equations, detailed scientific illustrations, data tables, and interactive educational elements, while maintaining full accessibility compliance.
ePub3 accessibility conversion costs depend on the complexity of the content, the quality of the source file, volume requirements, timeline constraints, and the specific accessibility features required. We provide detailed quotes after evaluating the content.
Certainly. We offer sample conversions that demonstrate the quality of our digital accessibility services so you can evaluate our approach before engaging in longer commitments.
We keep a dedicated team for urgent projects and can turn around standard content in as little as 48–72 hours. Very urgent requirements usually involve an additional fee, but we’ll confirm timelines and costs upfront during your consultation, ensuring resources are allocated appropriately and there are no hidden costs.
We build style guides and accessibility templates specific to your content. These define how headings, tables, images, and interactive elements are handled. Our team then applies these rules across all files, while project managers track compliance and run quality checks. This way, every ePub3 in your library looks and functions consistently, no matter the scale.
info@suntecdigital.com
+44 203 514 2601
+1 585 283 0055
