Translate EPUB eBooks—bridge languages, broaden your world
Professional EPUB eBook translation. Perfectly preserves vertical text, CSS styles, and image layouts. Supports files up to 500MB, exclusive bilingual reading mode, and customizable termbase.
Superior to traditional EPUB translation
"Purpose-built for eBook enthusiasts. O.Translator provides in-depth EPUB structural analysis, delivering full support for Japanese vertical text, complex mixed layouts, and CSS styling. Not only translating text, but also preserving the original reading experience, empowering you to effortlessly access authentic works from around the globe."
Not just translating text,
but restoring the soul of your documents
Perfect Layout Preservation
From font styles and paragraph indents to complex text-image wrapping, original formatting is rigorously retained post-translation—no manual adjustments required.
Vertical text support
Extensively optimized for vertical typesetting in Asian languages such as Japanese. After translation, vertical reading habits are fully preserved—no garbled characters and no layout disruption.
Ultra-Large File Support
Breaks through size limits. Supports EPUB files up to 500MB—seamlessly translating even massive, illustration-heavy volumes in a single process.
Custom Terminology Database
Upload a dedicated terminology glossary. Ensures consistent translation of personal names, place names, magical terms, or proprietary terminology throughout the entire book.
Quality on par with human translation
Powered by integrated GPT and Claude models. Compared to traditional machine translation, it delivers a superior understanding of long-text contextual logic, resulting in translations that are natural and highly fluent.
Online Proofreading & Editing
Once translation is complete, you can directly compare and edit the content at the paragraph level online, crafting the perfect translation to your specifications.
Why does format matter?
- Precise formatting is the hallmark of professionalism.
- Reduce secondary formatting time.
- Ensure accurate and precise information delivery.
Core translation scenarios
Reliably meeting every translation scenario
Foreign Novel Reading
Break language barriers. Fluently translate long-form novels while preserving chapter structure and contextual dialogue, delivering the authentic essence of literary works.
Academic Literature Analysis
Acquire knowledge efficiently. Accurately translate specialized books and technical documents, integrating terminology databases to guarantee rigorous precision in professional concepts.
Light Novels & Manga
Exclusive vertical text translation support. Faithfully restores the original layout conventions of Japanese light novels, ensuring a comfortable and natural reading experience.
Differentiated advantages
Why do professional teams choose us?
Prioritizing Reading Experience
Unlike basic text conversion, we reconstruct the EPUB internal structure to ensure flawless display on iBooks, Kindle, and other e-readers.
Flexible Pay-as-You-Go Pricing
Translate an entire eBook for the price of just a few cups of coffee. Pay only for what you need—no costly monthly subscriptions, delivering outstanding value.
Free Preview
Free preview of translation results supported. Confirm layout and translation style before payment—a zero-risk, satisfaction-guaranteed trial.
Translation FAQs
Easy Translation in Just 3 Steps
1. Upload Your File
Click Translation page , Access the operational interface and complete the login process if required.
Supports over 30 common document formats including PDF, Word, and Excel - simply drag and drop or select your files.
2. Select Translation Language
Simply configure your source language and desired target language—we support translation between over 80 languages.
3. Start Translation and Await Results
You don't need to remain on the page while waiting. Once translation is completed, we will immediately notify you via email to review the results.
Complimentary Trial Translation – Pay Only When Satisfied
We support free translation of selected sections. Continue once you're satisfied with the results.
Start Translation