With operations across the US, UK, and Europe, this multinational publishing group serves a broad spectrum of readers through four distinct content divisions. The academic division focuses on scholarly research, journals, and professional reference material, while the educational segment covers textbooks, learning resources, and interactive instructional material. The children’s publishing division includes illustrated books, early-learning titles, and young adult fiction. The trade catalog includes mainstream fiction, nonfiction, and specialty-interest titles. This broad publishing mix makes digital production a critical part of the group’s distribution strategy.
Across its four publishing divisions, the client needed a consistent, high-volume ePub3 conversion pipeline that could keep pace with aggressive publication schedules without sacrificing compliance or quality. We had to support a monthly output of 75,000 to 100,000 pages while ensuring each file met international ePub3 accessibility guidelines and performed reliably across diverse reading devices and platforms.
The client produced content at high volume, but the nature of that content, and what “correct” output meant for each of their four core divisions, varied considerably. The client also had to meet evolving accessibility standards across multiple regional markets within delivery windows set by international publishing schedules.
Sustaining Output Quality at 75,000–100,000 Pages per Month
Meeting monthly throughput targets across four active content divisions, while upholding strict quality standards and international publication deadlines, demanded a production structure with no tolerance for bottlenecks. Every converted page needed to be ready for platform submission without rework.
Handling Structurally Distinct Content
Academic titles required reflowable layouts and formula rendering; children’s titles depended on fixed layouts to preserve illustration fidelity; educational materials incorporated interactive elements and multimedia; trade titles needed consistent reflowable output across device types. No single conversion approach could address all four without significant specialization at the division level.
Ensuring Consistent Rendering across all Four Target Platforms
Each major e-reading platform applies its own rendering rules. Content that works correctly in Apple Books may not behave identically in Kindle or Google Play Books. Reliable output across all four target platforms, and on assistive technologies, required explicit testing against each environment at every production stage.
Adapting Production to Evolving International ePub3 Accessibility Guidelines
Accessibility standards are not static. The production workflow had to incorporate updates to international ePub3 accessibility guidelines while supporting multilingual content across global markets. This added a continuous layer of compliance management that static process documentation alone could not address.
We developed a production ecosystem to handle both the volume and the content diversity. Our approach embedded accessibility compliance into the conversion process from the outset, treating it as a structural requirement rather than a post-production check — a decision that proved central to achieving the 95%+ first-pass acceptance rate the client required.
HTML5 semantic markup was applied to every file to establish a machine-readable document structure with a logical reading order. WCAG-compliant navigation landmarks were configured to allow screen readers to correctly identify and navigate to headings, tables, and multimedia elements — providing users utilizing screen readers with reliable orientation within each title. Heading hierarchies, equivalent to H1 through H6, were consistently applied across all long-form books to produce a predictable reading sequence. Where titles contained embedded audio or video, synchronized playback and captioning were added to ensure that interactive content remained accessible to readers across all ability levels.
We produced academic titles in reflowable ePub3 layouts to support flexible reading across screen sizes. We built illustrated children’s books in fixed layouts to preserve the spatial integrity of artwork and typography. Educational resources were converted to media-rich ePub3 formats that support embedded audio, video, and interactive components. For trade titles, we produced clean files and verified consistent rendering across Apple Books, Kindle, Google Play Books, Adobe Digital Editions, and browser-based applications.
We embedded accessibility features directly into each file during conversion, rather than retrofitting them afterward. This accessibility-first ePub3 conversion methodology covered multilingual rendering, including support for right-to-left scripts and multilingual metadata; responsive reading controls, such as font resizing and dynamic text scaling; and visual accessibility features, including alt-text for all images, high-contrast mode support, and accessible color schemes. We validated every output against WCAG 2.2 Level AA and EPUB Accessibility 1.1.
We ran automated validation continuously across production output, using FlightCrew, Pagina ePub Checker, and EPUB Validator to flag schema errors, manifest issues, and missing metadata. Files that cleared automated checks were moved to specialist review, where accessibility and design reviewers assessed elements that automated tools cannot reliably evaluate, including alt-text quality, navigation flow, and the behavior of embedded interactive elements.
A team of 30 to 40 ePub3 specialists was set up to handle this engagement. Each specialist was trained in the specific content conventions of the client’s publishing divisions. During peak production cycles, resources were scaled up without increasing turnaround times, ensuring the client had predictable delivery schedules across both steady-state and high-demand periods.
FlightCrew
Automated ePub3 validation tool
Pagina ePub Checker
ePub3 compliance checking tool
EPUB Validator
Schema & package integrity verification tool
We helped the client build a reliable production framework to manage ongoing digital publishing operations at scale.
Monthly Conversion Volume of up to 100,000 Pages
Maintained steady monthly throughput across academic, educational, children’s literature, and trade publishing categories, including peak production cycles.
Global Accessibility Standards Met across Every Output
Every file was validated against WCAG 2.2 AA, EPUB Accessibility 1.1, and applicable regional compliance standards for the US, UK, and European markets.
95%+ First-Pass Acceptance Rate Achieved
We reduced rework cycles and helped the client move converted titles faster from production to platform availability.
If your publishing operation demands consistent, standards-compliant ePub3 conversion at enterprise scale, our ePub3 conversion services are built for exactly that. From reflowable academic titles to fixed-layout illustrated books, we deliver WCAG AA-validated, platform-tested outputs across every major e-reader without compromising turnaround or accuracy. Write to us at info@suntecdigital.com to discuss your project requirements.
info@suntecdigital.com
+44 203 514 2601
+1 585 283 0055
