AI-Powered Book Translation for EPUB and PDF

Translate entire ebooks with AI while keeping terminology consistent across chapters.

Upload your ebook, set your glossary rules, and get it back fully translated.

Start translating your book

What is PolyPages?

PolyPages is an AI-powered platform for translating entire books and long-form documents.

We help readers, researchers, authors, and publishers break down language barriers and share knowledge with the world.

EPUB

Translate EPUB books with the original chapter structure preserved.

PDF

Translate PDF books with the original page layout preserved.

Whole Book

Translate entire books from cover to cover, not just short snippets.

Glossary

Maintain terminology consistency with a custom glossary.

Also available for organization accounts: audiobook generation and book summaries.

Keep Terminology Consistent Across an Entire Book

Every glossary term follows one of three rules, applied consistently across the entire book.

Exact Translation

Force a specific term to always translate to one exact phrase, with no variation.

Preferred Translation

Set your preferred rendering for a term while still letting the AI adjust grammar for fluency.

Do Not Translate

Keep brand names, product names, or technical terms exactly as they appear in the source.

Post-translation Verification

After translation, PolyPages checks the output against your glossary rules and automatically retries EPUB passages where a required term is missing.

Solutions for Publishers & Content Owners

In addition to book translation, we also offer the following services through consultation.

AI Translation Reader

Real-time multilingual reading for publishing platforms

Page-by-page AI translation
Embeddable reading experience
Publisher platform integration

AI Book-to-Video

Turn books into AI-generated short-form video

Book-to-script adaptation
Short-drama style video generation
New content distribution opportunities

Why Use a Dedicated AI Book Translator?

A general-purpose AI assistant can translate a paragraph. Translating an entire book consistently is a different problem.

Whole-Book Workflow

Handle entire books, not just short text snippets.

Terminology Consistency

Keep key terms consistent across all chapters.

Structured EPUB/PDF Output

Maintain clean, readable formats for EPUB and PDF.

Professional & Academic Use

Built for researchers, authors, publishers, and technical content.

How It Works

Upload your book

Upload your EPUB or PDF file to get started.

Choose languages

Select the target language for your translation.

Set translation preferences

Choose your preferred translation style and options.

Add glossary rules

Set exact, preferred, or do-not-translate terms.

Translate and review

Let AI translate your book and review the results.

Example Terminology Rules

A sample glossary and how PolyPages applies each rule.

Original Term	Rule	Translation
Transformer	Preferred translation	变压器
GPT	Do not translate	GPT
Neural network	Exact translation	神经网络

For Academic and Professional Books

PolyPages is designed to handle complex content, from technical manuals to research papers, with high-quality and consistent translation.

Technical terminology

Research papers

Professional documents

Consistent long-form translation

Frequently Asked Questions

Yes. You upload the full EPUB or PDF and PolyPages translates it as one job, so there's no need to split the book or paste passages one at a time.

Yes. EPUB is one of PolyPages' two supported book formats, alongside PDF, with the original chapter structure preserved.

Yes. PolyPages translates entire PDF books up to 100 MB, keeping the original page layout. The PDF needs selectable text; scanned, image-only PDFs aren't supported.

You can set exact, preferred, or do-not-translate rules for specific terms. PolyPages gives the AI each rule wherever that term appears across the entire book, then checks the translation against your glossary.

Yes. Glossary rules and terminology checks are especially useful for technical, research, and professional books, where key terms must be translated accurately and consistently.

Translate Your Next Book with PolyPages

Join authors, researchers, and publishers who use PolyPages to bring knowledge to more readers worldwide.

Get Started Contact Us for Publisher Solutions