Translate EPUB

TranslateEPUB is an online translator for EPUB and PDF e-books that rebuilds the translated book with its chapter structure and formatting intact, instead of handing back a wall of pasted text. You drop a file into the upload workspace, pick a source language or let auto-detection handle it, choose the target language, and the service processes the book chapter by chapter. The first upload returns a free preview of the opening pages, produced by the same engine that handles the full book, so tone, terminology and readability can be judged before spending anything. Unlocking the remaining chapters takes credits, and the finished file downloads as an EPUB that opens in Kindle apps, Apple Books, Kobo, Calibre or any standard reader.

The mechanics are deliberately narrow. EPUB and PDF files up to 50MB are accepted: text-based EPUBs work best, text-based PDFs are supported with page-by-page text extraction, and image-only scans are routed through OCR at 20 credits per page with no upper cap. DRM-protected, empty or password-protected files cannot be parsed. Translation runs on Google Gemini Flash, and the site lists 100+ languages, naming English, Chinese, Spanish, French, German, Japanese, Korean, Portuguese and Italian among the common pairs; the target language defaults to Chinese. Because the whole document is treated as a book rather than a series of pasted paragraphs, recurring character names, defined textbook terms and fixed product language tend to stay consistent across chapters.

Accounts are optional to try and required to finish. The first upload previews free with no credit card, and full books are unlocked with one-time credit packs rather than a subscription. Credits track source length at roughly one credit per 1,000 words, so a 100,000-word novel needs about 100 credits, the exact size of the $2.99 Starter pack. Packs run from $2.99 for 100 credits to $99 for 7,000 plus 1,000 bonus credits, with the per-credit rate falling from $0.030 to $0.012 as the bundle grows. Scanned PDFs are quoted at 20 credits per page, and the site says the exact cost is shown before a job starts, so nothing is charged unseen.

Speed depends on length and queue, but a typical 100,000-word novel often completes in a few minutes once the job begins, while novellas finish faster and multi-hundred-thousand-word omnibus editions take longer. Finished books download from the job workbench, signed links expire after 24 hours, and saved copies remain available under Settings then Translations. TranslateEPUB positions itself between pasting text into a generic translator and commissioning a human translation: fast, inexpensive and structurally faithful, but not publication-perfect, so legal, medical and literary projects still need human review.