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Each English paragraph with its Spanish translation directly beneath it, in one EPUB. Read the English first; look down only when a sentence stops making sense.
The first 15 pages of text are sent to our server to be translated. The file itself stays on your device.
English and Spanish share so much vocabulary that a Spanish speaker reading English understands most of a page and then hits a wall on one clause. That is the worst possible failure mode for a dictionary: you do not know which word broke the sentence, so you look up three and lose the paragraph. A translation sitting underneath answers it in a glance.
Your browser opens the EPUB, walks every paragraph and inserts the Spanish beneath it as a sibling paragraph inside the original file. Chapters, cover, navigation and stylesheet survive, because only the chapter documents that actually received a translation are rewritten.
The layout is stacked rather than facing columns — and with Spanish there is a specific reason beyond EPUB reflow. Spanish paragraphs run a fifth longer than their English originals, so paired columns would go ragged and out of step within a page or two. Stacked, that mismatch simply does not exist.
A DRM-free EPUB. The bilingual file is assembled in your browser, not on a server.
Names, terms and forms of address are fixed once, so the Spanish under chapter three matches the Spanish under chapter one.
Each paragraph gets its translation styled beneath it, clearly distinguishable at a glance.
A complete EPUB with the book's own fonts and stylesheets. Accents and ñ render everywhere.
Your eye will go to the Spanish. It is easier and it is right there. Read the English paragraph first, every time — the moment of not-understanding is the practice, and skipping it means finishing a whole book having learned very little.
Fifteen pages get translations. The rest of the book stays in English inside the same file.
The text is sent to a server and discarded when the job ends. The file never leaves your device.
Stacked, not side-by-side. Facing columns need a wide screen, fight EPUB reflow, and go out of step as soon as the Spanish runs longer than the English.
English first, every paragraph. Give yourself the moment of not understanding before you look down — that moment is where the reading practice actually happens.
Yes. Kindle has accepted EPUB directly since 2022; email it to your device or copy it across.
Because EPUB text reflows to the reader's screen and font size, so true columns cannot hold their alignment. With Spanish the mismatch is worse than usual: the translation is typically 20% longer than the English, so paired columns drift apart within a page.
Yes. The browser rebuilds the archive entry by entry and only rewrites the chapter files that received a translation, so cover, navigation and metadata pass through untouched.
Same engine, different output. The translation tool replaces the English with Spanish; this keeps both, which is what makes it a reading aid rather than a replacement.
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The app builds the bilingual version of the entire book, with tap-to-look-up and your reading position synced across devices.
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