Untranslated international literature
Read books, memoirs and non-fiction titles that have never received an official commercial translation in your language.
Free Private EPUB Translator with Chapters Intact
Translate EPUB books on your device. Every chapter is translated locally while chapter hierarchy, stylesheets, table of contents and cover art remain intact.
Drop your EPUB book files here
or click to choose files from your device
Accepts.epub
Around 40 MB per file on this device · Unpacked and translated locally, never uploaded
Unpacked and translated locally in this browser. Nothing is uploaded.
Free to use · No account · No book upload
· Offline after model download
What is an EPUB translator?
An EPUB translator translates an entire book while preserving its digital publication structure. Rather than copying paragraphs into web translation forms, you open an EPUB file and receive a rebuilt book compatible with Apple Books, Calibre, KOReader and Kindle.
An EPUB is fundamentally a small website packaged inside a zip container: XHTML documents, a CSS stylesheet and a package manifest. This tool translates the text nodes within the book while keeping the navigation spine and styling undamaged.
- Chapters and TOC preserved
- Chapter navigation, section hierarchy and the table of contents remain intact for seamless reading.
- Typography and cover art
- Stylesheets, images, block quotes and cover illustrations survive the round trip without corruption.
- 100% private in-browser
- Unpublished books, early review copies and personal manuscripts never leave your laptop.
How to translate an EPUB book
Three steps, from your original electronic book to a translated edition.
Choose your book
Drop your .epub file into the panel above, or test the workflow with the sample guide.
Pick languages and approve model
Select the source and target languages. On first use, approve the one-time local AI model download.
Download translated EPUB
Download the completed book and open it directly in your favorite e-reader app.
Translating whole books without losing structure
How an EPUB book is unpacked, translated and reconstructed locally.
Spine & manifest intact
The internal OPF package file, spine order and navigation document are parsed carefully and preserved.
Rejoined inline tags
Sentences interrupted by emphasis or span tags are merged before translation to avoid broken grammar.
Full CSS stylesheet preservation
Font declarations, margins, drop caps and chapter heading styles remain exactly as designed.
Illustrations and graphics
Embedded images, maps, diagrams and cover artwork are copied through directly to the new archive.
Curious about archive rebuilding? Read how document and archive translation works.
What an on-device EPUB translator is built for
Expand your reading horizon without compromising sensitive manuscripts.
Unpublished author manuscripts
Translate early drafts, embargoed review copies and client submissions with guaranteed confidentiality.
Language learning & dual reading
Translate a book you already know, then read the original and translated version side by side across your devices.
Academic texts & research monographs
Study foreign research publications and open-access books at your own pace with local translation models.
Private, secure EPUB translation
Full book manuscripts are sensitive intellectual property. This EPUB translator runs locally inside your browser tab — no data is sent to a remote translation server.
After downloading the language model on your first run, translations can proceed completely offline. Read why private translation matters.
What to know before you start
- DRM-free files only
- Commercial e-books protected by proprietary digital rights management (DRM) are encrypted and cannot be unpacked. Only standard DRM-free EPUB files work.
- Novel length and processing time
- A full novel contains thousands of sentences and takes longer to process than short documents. Keep this browser tab open while the local model translates.
- Mid-sentence inline formatting
- Sentence fragments split by inline formatting tags are unified to provide natural translations. An italicized word in the middle of a sentence adopts the surrounding paragraph style.
EPUB translation FAQ
Practical answers to common questions about book translation and formatting.
What is an EPUB translator?
An EPUB translator translates the text of an electronic book while preserving its chapter hierarchy, styling, table of contents and cover art. This tool unpacks the book archive in your browser, translates chapters with on-device AI, and rebuilds a downloadable .epub file ready for e-readers.
How do I translate an EPUB book without uploading it?
Drop your .epub file into the translator panel above, select your source and target languages, and click Translate. An EPUB is a zip archive of XHTML and CSS, so it is unpacked and translated entirely in your browser. The book never leaves your machine.
How long does a whole book take to translate?
A full-length novel contains tens of thousands of sentences, so translating a whole book on your own hardware takes time. Progress is shown chapter by chapter as it runs, and already translated chapters are preserved even if you pause.
Does it keep chapters, styling and images?
Yes. An EPUB contains structured XHTML files and stylesheets. Only the human-readable text inside the markup is modified. The table of contents, chapter splits, block quotes, illustrations, cover art and CSS styles all survive intact.
Can I translate DRM-protected books from Amazon or Apple?
No. DRM-protected books bought from commercial e-book stores are encrypted. This EPUB translator works on standard DRM-free EPUB files, including public domain books, independent store purchases, research publications and personal manuscripts.
Can I get a bilingual book with both languages?
The rebuilt EPUB replaces the original text so the layout and typography remain clean in e-reader apps. For bilingual side-by-side reading, you can open the translated EPUB alongside the original on two devices or side by side on a computer.
Is it safe for unpublished author manuscripts?
Yes. Manuscripts under embargo, pre-release drafts and client documents are exactly the files that should never be sent to cloud translation servers. Because LangsAny operates 100% locally in your browser, your writing remains completely confidential.
Start translating your EPUB books for free
Choose an EPUB book and translate it privately in your browser with formatting intact.
Choose an EPUB book