Chapter & TOC Preservation
Every chapter, table of contents entry, and internal navigation link stays functional. Your translated eBook is ready for distribution across e-readers.
Translate EPUB eBooks Online - Chapters & Layout Preserved
Upload any EPUB file and get an accurate translation in 100+ languages. Chapters, table of contents, images, and metadata - all preserved. Reflow-safe output.
EPUB workflow
Important notice: We only accept DRM-free EPUB files. Files protected by digital rights management (e.g. purchased from Kindle, Apple Books, or other DRM-locked stores) cannot be processed - this is a legal requirement, not a technical limitation. Please upload a DRM-free EPUB file.
Translation example
An e-book in EPUB, English to Spanish
A three-chapter book written for this page, with a table of contents in both EPUB 2 and EPUB 3 form, links between chapters, a footnote with its back-link, a cover and an inline figure. Everything below is something an e-reader breaks on when a translation gets it wrong; it was counted from the two files.
Source
Result
Source
Result
Source
Result
-
Container valid: mimetype first and stored
mimetype is the first entry and is not compressed, as the EPUB spec requires.
-
Every internal link resolves
10 of 10 links point at a file and anchor that exist.
-
Footnote and its back-link still paired
-
Cover still marked as the cover image
-
Identifier unchanged
urn:uuid:6f1b7c1e-9a4d-4b3f-8f5a-0e2d4c9b7a10
-
Language tag switched
The package language en → es; the lang attribute of every chapter too.
-
Description and both contents lists translated
-
Title
The book title “Eleven Hulls” was kept as a proper name in the package data; translate it by hand if your edition has a Spanish title. Author and publisher are names and stay.
-
Spelling
A Spanish spell-check finds no unknown word except the character name Maren.
-
Checked with EPUBCheck
EPUBCheck is not installed on the build host, so the file was checked for the structure above, not validated against the full standard.
2026-10-08 verified — Amanda Lee
EPUB features
Reflow-Safe Output
Translated EPUBs render correctly on Kindle, Apple Books, Kobo, and every major e-reader. Text reflows across all screen sizes.
Full-Length eBook Support
Cloud-based AI infrastructure handles novels and textbooks with hundreds of pages.
100+ Languages Supported
Translate EPUB files between 100+ languages including Spanish, French, German, Arabic, Chinese, Japanese, and Korean.
Why ForgeFile Is the Best EPUB Translator Online
Need to translate an eBook without losing chapters, formatting, or navigation? ForgeFile is an AI-powered EPUB translator that converts your digital books into 100+ languages while preserving every chapter, table of contents entry, image, and style. Whether it's a novel, a textbook, or a technical manual, your translated EPUB is ready for readers on Kindle, Apple Books, Kobo, and any e-reader.
How ForgeFile Translates EPUB Files
Our translation engine understands EPUB's internal structure. When you translate an EPUB file, ForgeFile:
- Parses every chapter, section, and HTML content file inside the EPUB package
- Translates text using context-aware AI that handles narrative, academic, and technical prose
- Rebuilds the EPUB with translated content, valid TOC, updated metadata, and proper reflow
The result is a standards-compliant EPUB file ready for distribution - no manual chapter-by-chapter editing needed.
Reflow-Safe & Reader-Compatible Output
EPUB is designed for reflowable text across different screen sizes. ForgeFile ensures your translated eBook works on every device:
- Table of contents and internal navigation links stay valid
- Chapter headings, sections, and page breaks are preserved
- CSS styling, fonts, and text formatting are maintained
- Cover images, inline illustrations, and figures stay in place
- EPUB metadata (title, author, language, publisher) is translated and updated
Built for Authors, Publishers & Educators
ForgeFile handles the eBook workflows professionals rely on:
- Fiction & Nonfiction Authors - translate novels, memoirs, and essay collections to reach global readers
- Publishers & Distributors - localize entire catalogs for international markets and bookstores
- Educational Content - translate textbooks, study guides, and course readers for multilingual classrooms
- Technical & Professional Publishing - localize manuals, handbooks, and reference guides in EPUB format
Bulk translation is available for multi-book projects and catalog localization. All files are encrypted in transit and at rest - fully GDPR-compliant.
Why Publishers Choose ForgeFile for EPUB Translation
- Standards-Compliant Output - translated EPUBs pass validation and work on all major e-readers
- TOC & Navigation Preserved - chapter links, bookmarks, and internal references stay functional
- 100+ Languages - including right-to-left scripts (Arabic, Hebrew) and CJK characters
- Metadata Updated - EPUB language, title, and description metadata are translated automatically
- No Software to Install - works entirely in your browser
EPUB is standardized by the W3C - see the EPUB 3 specification.
How to Translate an eBook in 4 Steps
- 1
Upload Your EPUB File
Drag and drop your . epub file, or browse to select it. The maximum file size depends on your plan.
- 2
Select Source & Target Language
Choose from 100+ languages. ForgeFile auto-detects the source language and handles narrative, academic, and technical prose.
- 3
Configure Translation Settings
Choose whether to translate EPUB metadata (title, author, description). Select translation style for fiction or technical content.
- 4
Download Your Translated eBook
All chapters, TOC, images, and styling are preserved in the translated EPUB - download and upload directly to bookstores or distribution platforms.
EPUB Translation FAQ - Common Questions Answered
How do I translate an eBook online?
Upload your EPUB file to ForgeFile, select your target language, and click Translate. Our AI translates all content while preserving chapters, TOC, formatting, and metadata.
Is the table of contents preserved?
Absolutely. The table of contents, chapter links, internal navigation, and bookmarks all remain fully functional in the translated EPUB.
Will the translated EPUB work on Kindle and Apple Books?
Yes. ForgeFile produces standards-compliant EPUB files that work correctly on Kindle (via conversion), Apple Books, Kobo, Google Play Books, and all major e-readers.
Are images and cover art preserved?
Yes. Cover images, inline illustrations, figures, and all visual elements stay in their original positions and resolution.
Can I translate a multi-chapter novel or textbook?
Yes. ForgeFile handles long eBooks with hundreds of chapters and pages. Each chapter is translated with full context awareness for consistent terminology.
Is there a file size limit?
For larger files or multi-book catalog translation, contact us about enterprise plans with bulk processing. The maximum file size depends on your plan.
Is my eBook data secure during translation?
Files are encrypted in transit and at rest. How long they are kept depends on your plan.
Is EPUB metadata updated in the translation?
Yes. ForgeFile can translate the EPUB metadata including title, description, and language tag - so your translated eBook is properly cataloged in bookstores and libraries.
Ready to Translate Your eBook?
Upload your EPUB file and get a publishing-ready translation. Chapters, TOC, and formatting preserved throughout the book.