DualBook 8 languages

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Translate an English book into Filipino

Upload an English EPUB and get the first fifteen pages back in Filipino. The word po is one syllable, appears everywhere, and is entirely absent from the English — it depends on who is speaking to whom.

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

Filipino marks respect by dropping po into the sentence, and whether it belongs there depends on the ages and standing of the two people talking. English says nothing about that, so a translator has to know the cast to know where the particle goes. Sprinkle it everywhere and everyone sounds like a stranger; leave it out and a child sounds rude to their grandmother.

The pronouns ask the same question twice more. Tayo includes the person being spoken to; kami does not — and English "we" chooses neither.

So the model reads the whole book first and builds a guide of the cast, their ages and relationships, the names and the recurring terms. Every page of the sample is translated against it, which is what keeps the respect marking steady instead of appearing at random.

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, their ages and their relationships are mapped once — which is what decides where po belongs and which "we" to use.

  3. The first 15 pages come back in Filipino

    About 4,500 words, translated as whole sentences, since Filipino puts the verb first and English does not.

  4. Download, or read it here

    A complete EPUB with the book's own styling. Filipino uses the Latin alphabet, so it renders anywhere.

What this free tool does not do

Respect marking is inferred. The English never stated the ages or the standing. The guide makes the inference consistent across the sample; it cannot make it authoritative.

It does not write Taglish. Real Filipino conversation mixes in a great deal of English; the translation writes Filipino, because a bilingual sample that quietly leaves English in place is not a translation.

Fifteen pages, not the book — about 4,500 words — and the text is sent to a server and discarded when the job ends.

Questions

How does it decide where po goes?

From the cast mapped across the whole book — who is older, who is in authority, how close two people are. A paragraph on its own does not carry that, which is why deciding per paragraph produces a character whose manners change between chapters.

How does it choose between tayo and kami?

From whether the person being addressed is part of the group. It is one of the clearest examples of a decision English simply does not encode, and one that a reader notices immediately when it is wrong.

Will it mix in English the way people actually speak?

No. Everyday speech mixes English in constantly, but a translation that leaves English words in place is doing less work than it appears to — so the sample is written in Filipino, and the English original is right there above it if you want the other version.

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 Filipino next to the English, with your position synced between devices.

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