Online EPUB eBook Translator

Doc2Lang uses GPT technology to break language barriers for electronic books and authors worldwide.

Upload a file

or drag and drop

pdf, xlsx, docx, csv, pptx, srt, vtt, ass, epub up to 25MB

Just upload an ePub file and get a well‑formatted multilingual version in a few minutes, ready for global readers.

EPUB eBook Translation Challenges

CSS, navigation and metadata often break when you copy passages line by line.

Text inside images or covers is hard to capture and different language lengths can ruin page layout.

Large files up to fifty megabytes may crash ordinary tools and waste time.

Understands context and terminology so the result reads naturally.

Updates the TOC and bookmarks so readers jump easily between chapters.

Covers major and minor tongues to publish true global editions.

Passes EPUB‑Check and works on Kindle, Kobo or after export to MOBI AZW3 KFX FB2.

TLS encryption and instant file deletion keep your work private.

Full book translations finish in just a few minutes.

Upload your .epub file up to fifty megabytes. MOBI AZW3 KFX FB2 can be converted to EPUB with Calibre before upload.

Choose from more than one hundred language pairs. A free sample lets you check quality before payment.

Download the finished EPUB in minutes. Compatible with Kindle and Kobo readers.

Publish novels or textbooks in many languages and grow sales worldwide.

Bulk translate course materials while keeping citations and footnotes.

Share multilingual collections and improve accessibility.

Will the table of contents stay correct?: Yes. We synchronise toc.ncx and content.opf so all chapter links remain valid.
Can you translate text inside images?: Image text is not detected yet. Use our PDF OCR mode or ask us for a custom service.
What is the maximum file size?: We recommend fifty megabytes or less. Split very large books before upload.
How is the price calculated?: Pay per character. The exact quote appears after upload and the preview is free.
Do you change CSS or fonts?: No. We translate every text node and leave style sheets and embedded fonts untouched.
Can Kindle AZW3 files be uploaded?: Please convert AZW3 MOBI or KFX to EPUB with Calibre then upload.
May I upload content without copyright?: No. Upload only works you own or have legal permission to translate.
Who owns the translated EPUB?: All rights stay with you as the original copyright holder. Doc2Lang holds only temporary processing permission.

Upload an EPUB and preview the translation in minutes. Bring your eBook to readers everywhere.