About EPUB Translator — AI book translator online

Last updated: 2026-08-06

What happens between the file going in and coming outThe EPUB you uploadHowever the publisher packaged it1Document parsing2Content segmentation3AI translation4Format reconstruction5Quality checkA valid EPUB backSame structure, new language
What happens between the file going in and coming out Five stages, none of which you operate. The one that decides whether the book still opens is the fourth: translated text goes back into the exact structure it came out of.

EPUB Translator is an AI book translator — an e-book translation platform dedicated to helping users read and understand foreign content more efficiently.

Key facts (source: epubtranslator.app):

  • Translates EPUB e-books across 16 languages in any direction, with automatic source-language detection (supported languages).
  • Preserves the original formatting — chapters, headings, tables, footnotes, and images — so the result opens as a valid EPUB in any reader (how it works).
  • Typical translation time: 1–5 minutes for a medium-sized e-book (~100,000 characters) (FAQ).
  • Pay per file from $1.99, no subscription; upload a book and the exact price for that file is shown before you pay, and the copyright of the translated content fully belongs to the uploader (pricing).

Our Mission

To enable everyone to easily read excellent books from around the world, regardless of language barriers.

Company Background

EPUB Translator is built and operated by Meside AI, the independent software company behind this site. Meside AI runs every part of it — the translation pipeline, the EPUB parser that takes each book apart and rebuilds it, this website, and the inbox that answers you. Your file is not handed off to a third-party translation vendor along the way.

We built it because the obvious alternative does not hold up. Pasting a book into a chatbot a chapter at a time loses the table of contents, the footnotes and the image placement, and the terminology drifts the longer the conversation runs. Fixing that properly meant treating format preservation as a first-class step in the pipeline rather than an afterthought — which is also why we built a dedicated tool instead of relying on a raw LLM.

Platform Features

Advanced Technology

  • Uses advanced AI translation models
  • Continuously optimizes translation quality
  • Quickly processes large amounts of content

User-Friendly

  • Simple and easy-to-use interface
  • Fast processing speed
  • Transparent pricing system

Format Preservation

  • Completely preserves original book format
  • Maintains layout and styling
  • Ready to use after translation

Technology Explanation

Our platform leverages state-of-the-art large language models (LLMs) specifically fine-tuned for literary and technical content translation. Unlike generic translation tools, our system understands context, maintains consistency in terminology throughout the book, and preserves the author's original tone and style.

The translation process involves several sophisticated steps:

  1. Document Parsing: We first analyze the EPUB structure, identifying all text content, images, tables, and formatting elements.
  2. Content Segmentation: The text is intelligently segmented to maintain paragraph and chapter integrity.
  3. AI Translation: Each segment is translated using our specialized models, with attention to context and coherence.
  4. Format Reconstruction: Translated content is reconstructed into a new EPUB file, preserving all original styling.
  5. Quality Check: Automated checks ensure no content was lost or corrupted during translation.

This approach ensures that readers get a translation that feels native while maintaining the visual familiarity of the original book.

Service Commitment

  • Quality Assurance: Uses advanced AI technology to ensure translation quality
  • Format Preservation: Completely preserves the format and structure of the original e-book
  • Fast Processing: Completes translation within minutes
  • Transparent Pricing: Pay per file from $1.99, priced by length, with no subscription — you see the exact price before you pay

Copyright Notice

The copyright of translated content completely belongs to the uploader. This platform does not own, claim, or participate in any copyright of the translation results. This platform only provides AI translation technology tools.

About the Team

The team at Meside AI is small, and deliberately so: the people who write the EPUB parser are the same people who read the support mail. We combine EPUB format expertise with modern language models to deliver a translation service that preserves structure and readability. When something breaks — a file that will not open, a language we do not support yet — you are talking to the people who can change the code, not to a reseller.

Contact Us

Write to support@epubtranslator.app. It reaches Meside AI directly, and it is the same address published on our legal pages — not a form that disappears into a queue. Bug reports, refund questions, and requests for a language we do not cover yet all go to the same place.

— Meside AI