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Translate EPUB

Translate EPUB books into another language with a workflow designed for readable output, desktop review, and continued reading after export.

Drop a PDF or EPUB here

Upload one document, then choose the result you want to create.

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Another language. Still your book.

From chapter headings to images, footnotes and text styles, the translation follows the structure and layout of the original. Read in a new language with a familiar reading experience.

Original · English

Calculus Made Easy

Chapter I

A little bit of. The sum of.

These dreadful symbols are:

(1) d which merely means “a little bit of.” Thus dx means a little bit of x; or du means a little bit of u. But you will find that these little bits (or elements) may be considered to be indefinitely small.

dx,du

(2) ∫ which is merely a long S, and may be called (if you like) “the sum of.” Thus ∫dx means the sum of all the little bits of x; or ∫dt means the sum of all the little bits of t.

∫dx,∫dt

The word “integral” simply means “the whole.” If you think of the duration of time for one hour, you may (if you like) think of it as cut up into 3600 little bits called seconds. The whole of the 3600 little bits added up together make one hour.

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Translation · European Spanish

El cálculo al alcance de todos

Capítulo I

Un poquito. La suma.

Estos temibles símbolos son:

(1) d, que solo significa «un poquito de». Así, dx es un poquito de x; du, un poquito de u. Pero verá que estos pequeños trozos (o elementos) pueden considerarse indefinidamente pequeños.

dx,du

(2) ∫, que no es más que una S alargada y puede llamarse, si lo desea, «la suma de». Así, ∫dx es la suma de todos los pequeños trozos de x; ∫dt, la de todos los de t.

∫dx,∫dt

La palabra «integral» significa simplemente «el todo». Puede imaginar una hora dividida en 3600 pequeños trozos llamados segundos. Todos esos 3600 trozos sumados forman una hora.

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A new language, the same familiar book. Keep the chapters, images and original layout, and carry on reading in your favorite reader.

Desktop + iOS client

Download the desktop app to translate EPUB files and check the result

The desktop app is a better place to translate EPUB books, inspect the translated content, and keep the file locally once it is ready. After that, you can continue reading on desktop or pick up the book later on iPhone or iPad.

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What matters when you want to translate an EPUB

If you already have an EPUB, what matters most is a translation workflow that keeps the book practical for reading instead of turning it into disconnected text.

  1. Best for existing EPUB books

    A good fit when the book is already in EPUB and the main goal is to read it in another language without leaving the book format behind.

  2. The translated EPUB should stay readable

    The target is not just translated text. It is an EPUB you can keep reading, browse through by chapter, and return to later like a normal book.

  3. Translation is only part of the workflow

    After translation, users often still want to review the output on desktop, check whether the reading flow feels right, and then keep the book in their library.

  4. Useful when you want the result to stay book-like

    The important result is a translated EPUB you can review, save, and continue reading while still keeping the structure of the original book.