Translate a PDF document, paragraph by paragraph
Upload a PDF report, paper, manual or book and get it back as a bilingual document: each paragraph of the original with its translation right under it. The text is reflowed, so the original page layout is not kept.
Upload to see the full book price. Then choose a free preview or translate the whole book. Uploading uses no preview allowance or credits.
These files are the pipeline's real output. Download one and open it in Apple Books, Calibre or any ePub reader.
See it before you try it
Pride and Prejudice — Jane Austen · Chapters 1–2, sample · English → Simplified Chinese
It is a truth universally acknowledged, that a single man in possession of a good fortune must be in want of a wife.
凡是有钱的单身汉，总想娶位太太，这已经成了一条举世公认的真理。
However little known the feelings or views of such a man may be on his first entering a neighbourhood, this truth is so well fixed in the minds of the surrounding families, that he is considered as the rightful property of some one or other of their daughters.
尽管这样的男人第一次来到一个地区时，他的感情或看法如何，人们知道得很少，但这条真理在邻近的各个家庭中却是如此根深蒂固，以致于他被视为他们某个女儿理所当然的财产。
“My dear Mr. Bennet,” said his lady to him one day, “have you heard that Netherfield Park is let at last?”
“亲爱的班纳特先生，”他的太太有一天对他说，“你听说尼日斐花园终于出租了吗？”
Built for whole books
Names stay themselves
Before translating, we read through your book and build a glossary of people, places and special terms. Every request carries it, so “Mr. Darcy” is the same person on page 3 and page 300, and you can edit the glossary yourself.
Your book, not a rebuild
Translations are inserted into the original file, right after each paragraph. Chapters, images, footnotes, fonts and styles stay exactly where the publisher put them.
Every line editable
Disagree with a sentence? Click it, fix it, re-export. The built-in editor covers every paragraph and the glossary.
Impossible to lose work
Every finished batch is saved instantly. Close the tab, lose your connection or cancel, and the next run picks up exactly where it stopped.
A novel in minutes
Dozens of parallel requests with speed that adapts to the model. A full-length novel typically lands in 10–30 minutes.
Reads anywhere
The output is a standard ePub. If it reads books, it reads yours: Apple Books, Kindle via Send-to-Kindle, Calibre, KOReader.
How it works
Upload your ePub
We read every paragraph, pull the cover, and build a glossary of names and terms so the whole book is translated consistently.
We translate it
Paragraph by paragraph, dozens of requests in parallel. Watch live progress, or close the tab and come back later while it keeps going.
Download the bilingual book
Each translation sits right under its original paragraph. Edit anything you like, export, and read in any ePub reader.
Simple pricing
Free preview
Upload your own ePub and get its opening chapters translated free, about 10% of the book, one to three chapters. Read the result, then decide. Three previews a day, no card needed.
Per book
Pay once for the book you upload. As a guide, about $1 per 100,000 characters of plain English text, $0.99 minimum; Chinese or Japanese characters count about three times as much. The exact price is shown after upload, before you pay, and covers the whole translation.
Example: the full Project Gutenberg ePub of Pride and Prejudice, about 730,000 characters, is quoted at $7.37.
Monthly
For readers with a stack: 6,000,000 credits a month, enough for about four books the size of Pride and Prejudice. Unused credits carry over. Cancel anytime in Settings.
Questions, answered
What do I get back?
A bilingual ePub and a bilingual PDF. Every paragraph of your PDF is followed by its translation. Headings stay headings, and code blocks are kept as they are.
Does it keep the original page layout?
No. We read the text of your PDF and rebuild it as a clean reflowable document, so columns, page breaks, images, tables and running headers and footers are not kept. Use it to read and understand a document in another language, not to produce a print ready copy of the original pages.
Which languages can I translate a PDF into?
Malay, Indonesian, Arabic, Vietnamese, Thai, Simplified and Traditional Chinese, English, Spanish, Japanese, Korean, French, German and Portuguese. You pick the language when you upload. The source can be any left to right language the AI reads well, for example an English PDF into Malay or Arabic, or an Indonesian PDF into English.
Does Arabic come out right to left?
Yes. Arabic translations are marked as right to left in the ePub and are set right to left in the PDF, under each paragraph of the original.
Can I translate a scanned PDF?
Yes. If your PDF is a scan without selectable text, we read each page with an AI model first, up to 300 pages a day, and then translate the text like any other PDF. Reading a scanned page adds about $0.02 per page to the quote. Check the free preview: unclear scans can produce reading mistakes.
How much does it cost?
You get a free preview of part of your document first. The full translation is quoted from the length of your document before you pay, from $0.99 per document, or you can subscribe for $9.9 per month.
Which files can I upload?
PDF or ePub files up to 50 MB. PDFs that need a password to open cannot be processed.