Translate MOBI from Polish to Portuguese
A MOBI file translates from Polish to Portuguese in full, automatically. MOBI is converted to EPUB first, and the EPUB is what gets translated. The preview is free and pricing starts at 249 RUB per book.
What happens to your file
MOBI is converted to EPUB first, and the EPUB is what gets translated. Worth knowing up front: you download EPUB, not the original MOBI. Chapter structure, table of contents and images survive the conversion.
How the translation runs
- The MOBI file is converted to EPUB — a required step, since this format cannot be translated directly.
- Structure is extracted from the EPUB: table of contents, chapter boundaries, images and metadata.
- Text is translated segment by segment with surrounding context.
- The EPUB is rebuilt with translated text and the original structure.
- You download EPUB. The file is not converted back to MOBI.
What is preserved
Translating MOBI preserves:
- table of contents and chapter navigation
- chapter breaks and part ordering
- images and their captions
- book metadata: author, title, language
Polish to Portuguese: what changes
Text length barely changes when translating into Portuguese.
What makes translation into Portuguese harder:
- grammatical gender has to stay consistent across the whole book
- formal and neutral address are distinct, and a book cannot mix them
- subjects are frequently dropped and inferred from context
What makes the Polish original harder to read
Difficulty comes from the source language as much as the target. Here is what has to be untangled in Polish text:
- noun gender in the original does not always match the target, so agreement has to be rebuilt
- case endings carry a word's role in the sentence, and that role must be expressed by other means in translation
- politeness level is grammatically encoded and has to be recognised to keep the register right
What to keep in mind
- The file you download is EPUB, not MOBI. There is no conversion back.
- DRM-protected files cannot be opened programmatically and are not processed. We do not help remove protection.
What can go wrong
The honest weak points of this particular combination:
- Pagination in EPUB will not match the original: the text length changed and EPUB reflows to the reader's screen.
- In technical writing, terms can be rendered differently across chapters. If consistency is critical, use the Premium tier with its double pass.
- If the translation fails, you get a full refund — the request form is on the site.
What it costs
Basic is 249 RUB for a book up to 200 thousand words; Premium is 445 RUB. The exact price is calculated once the file is uploaded and the real word count is known. A free preview shows translation quality before you pay.
Frequently asked questions
- How much does it cost to translate MOBI?
- From 249 RUB per book up to 200 thousand words on Basic, or 445 RUB on Premium. The exact price appears once the file is uploaded.
- What format do I get back?
- EPUB. The original MOBI is converted to EPUB before translation, and there is no conversion back.
- Can I check the quality before paying?
- Yes. A sample of the book is translated automatically after upload so you can compare it against the original. Payment comes after that.
- How long does translating a book take?
- Usually from tens of minutes to a few hours depending on length. Progress is visible on the order page and the finished file arrives by email.
- How is this different from machine translation?
- Translation runs through large language models with surrounding context rather than word by word. The difference shows in dialogue, terminology and long descriptive passages.