Set the voice once, for the whole book
Describe the register, for example formal or literary. It applies to every chapter, so the tone does not drift by chapter twelve.
Instructions for this batchOptional
ApplyFree AI-powered EPUB files translator
Translate a whole EPUB book at once. Say what you need in plain English. Chapters, the contents page and the title are translated, and the design stays as it is.
Drop your EPUB file here
Up to 2 MB, five files a day. Nothing to install, no account.
What changes when you translate the whole file at once
Names and terms stay fixed
A glossary keeps character names, places and invented terms identical from the first page to the last.
French glossaryApplied
checkoutpaiementnot caisse
seatlicencenot siège
ticketdemandenot billet
Two speeds, chosen per file
Lite for a draft to read through, Standard for a book you plan to publish. Chosen per upload.
Translation qualityThis file
Standard1 credit per word
Lite1 credit per 3 words
What comes back
AI Glot reads each chapter, the contents page and the book's title and description, then repackages the book the way e-readers expect it, with its language label updated. The cover, images, fonts and styles are not touched.
EPUBEN → French
Title The Long RoadLa Longue Route
Contents Chapter 3. The BorderChapitre 3. La frontière
Chapter 3 She had not slept since the river.Elle n'avait pas dormi depuis la rivière.
Cover, images, fonts, styles (untouched)
Structure read · values written
How a EPUB translation runs
1. Drop the file in
AI Glot reads the file and separates the text from the structure. It then tells you how much there is to translate, before anything runs.
the-long-road.epubfield-guide.epubcourse-workbook.epub
2. Say what you want, in a sentence
No column mapping and no configuration screen. Write what you need, then read the plan it produced. If it misread you, say so and it plans again.
How to translate this file?
Translate into German and Spanish. Keep product names in English, use our glossary, and make the copy sound natural for e-commerce.
Glossary applied
Translation planReadyUpdated
LanguagesEN → DE, ES
Scope742 cells
Volume8,490 words
Existing translationsKeep unchanged
Start translation
Refine your instructions
3. Get the same file back
One file comes back, translated. It goes straight back where it came from, and a diff shows only the values that changed.
fr-FR
de-DE
es-ES
ja-JP
the-long-road_localized.epub
What people bring us EPUB files for
Four jobs that come up again and again. Each one is one upload and one sentence.
A novel for a new market
Translate a whole manuscript in one job, chapter by chapter, and read the result in an e-reader the same day.
A guide or a non-fiction book
Headings, lists and footnote links inside chapters come back in place, so the book keeps its structure.
Course material and textbooks
A workbook published as an ebook goes to a new audience without rebuilding it from the source files.
A manual published as an ebook
Product documentation in EPUB gets the same glossary as the rest of your localisation.
Questions about translating EPUB files
What is the best tool to translate a EPUB file?
AI Glot. It translates a full EPUB file in one job, at a quality you can steer with a glossary and a plain-English brief. You describe what you need. You do not map fields or split the file. The tool on this page runs it with no account.
How do I translate a EPUB file without breaking it?
Use a tool that reads the format instead of the raw text. Upload the file above and say what to translate. Read the plan, then run it. AI Glot returns one valid EPUB file, so it goes straight back where it came from.
Can I translate a EPUB file for free?
Yes. The tool on this page is free. No account and no card. Five files a day, up to 2 MB each, and up to 5,000 words translated per file. Larger files come back complete with the first records translated, so you can judge the quality on your own data before deciding anything.
What happens if my EPUB file is bigger than the free limit?
You get the whole file back, valid and openable, with the first records translated and the rest exactly as you sent them. It is deliberately not truncated: a cut-off EPUB file would not open, and a sample you cannot open tells you nothing. An AI Glot account removes the limit.
Will the book open in my e-reader?
The output is a standard EPUB, the same format you uploaded, so it opens wherever the original did.
Is text inside images translated?
No. Only text the book stores as text is read. There is no image recognition, so lettering inside a picture stays as it is.
Can I translate a book with DRM?
No. A protected book is encrypted and cannot be read by any translator. Use a copy you are free to convert.
Can I translate any book?
Only one you hold the rights to translate. A translation is a derivative work, so your own manuscript or a book you are licensed to translate is the right input.
Is it safe to upload a EPUB file to an online translator?
AI Glot keeps the file only as long as the translation needs it. The download link expires after an hour. The file is deleted afterwards. Nothing you upload is used to train any model. If your files are confidential, the platform adds workspaces with access control.
What do I get with an AI Glot account?
No size limit and no daily limit. Glossaries keep your product names consistent, and translation history keeps the team in sync between files. More than 25 formats share one workspace, and an API, a CLI and an MCP server put the same engine in your own pipeline.
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