DualBook 8 languages

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Translate an English book into Bengali

Upload an English EPUB and get the first fifteen pages back in Bengali. Bengali has three words for "you", each with its own conjugation — and the English sentence in front of the model contains none of the information needed to choose.

The first 15 pages of text are sent to our server to be translated. The file itself stays on your device.

তুই, তুমি and আপনি are not politeness settings. They place two people in relation to each other, and they change the verb as well as the pronoun, so the choice runs through every sentence of a conversation rather than sitting on one word. Decide it per paragraph and a character addresses their mother one way in chapter two and another way in chapter three, which reads as a different family.

The second decision is register. Bengali carries a literary form and a colloquial one, and while modern books are written in the colloquial register, a translation of an older or deliberately formal English text may want the other. That is one choice for the whole book, not a per-chapter mood.

Both are settled from the complete text. The model reads the whole book, writes a guide of the cast, the relationships, the names and the recurring terms, and the sample is translated against it.

How it works

  1. Choose your English EPUB

    A DRM-free EPUB. The file stays on your device; only the text of the sample is sent.

  2. The model reads the whole book

    The cast and their relationships are mapped once, which fixes the address level and its verb forms for the whole sample.

  3. The first 15 pages come back in Bengali

    About 4,500 words in a single consistent register, translated as continuous prose.

  4. Download, or read it here

    A complete EPUB. Bengali conjuncts render in modern readers, and the file keeps its own styling.

What this free tool does not do

Address is inferred. The English never marked it. The guide makes the choice consistent across the sample; it cannot make it authoritative.

One register, not a mix. The sample will not switch between the literary and colloquial forms, which is correct — but it also means you cannot ask for the other one.

Conjuncts depend on your reader's font. Bengali has a large set of conjunct forms; modern devices render them properly, very old ones can show the pieces instead.

Fifteen pages, not the book, and the text is sent to a server and discarded when the job ends.

Questions

How is তুই vs তুমি vs আপনি decided?

From the relationships mapped across the whole book, then held. Because the choice changes the verb and not only the pronoun, an inconsistent decision is visible in every line of a conversation rather than in one word of it.

Which register does it write in?

The colloquial register, which is what contemporary Bengali books use. The literary form belongs to an earlier period, and writing a modern novel in it would read as costume rather than as translation.

Will Bengali conjuncts display correctly?

Yes in any modern reader — they are ordinary Unicode text and the file does not substitute fonts, so the book's own stylesheet decides the appearance. Very old devices with incomplete Bengali fonts can break them apart.

How much is free?

About 4,500 words, roughly fifteen pages, five books a day per person.

Translate the whole book

The app runs the same engine across the entire book and can show the Bengali next to the English, with your position synced between devices.

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