Document Page Translator - PDF, EPUB & more (Free & Local) EN

Chrome and Edge have excellent built-in translators that translate any webpage instantly and for free. But they don't work on books and documents:
- PDFs are rendered on a canvas, making the text invisible to the browser's translator.
- EPUBs cannot be opened in the browser at all; they just trigger a download.

This extension quietly solves both problems - and opens seven more document formats too!

How it works:
When you open a supported document (PDF, EPUB, MOBI, AZW3, FB2, RTF, TXT, Markdown, or local HTML), the extension converts its text into a clean, reflowed HTML webpage. Since it is now a normal webpage, you can simply right-click and select "Translate to [Your Language]".

Key features:
📖 EPUB reader - unpacks EPUB books and combines chapters into a single scrollable document for seamless translation.
📄 PDF reflow - extracts text and lays it out as readable paragraphs, so the translator doesn't break, overlap, or double text.
📚 More formats - also opens MOBI, AZW3, FB2, RTF, TXT, Markdown, and local HTML, each converted to clean, translatable text, with no Calibre or other app required.
🔀 Table of contents - automatically imports the document's original outline as a collapsible navigation tree.
🎨 Reading mode - light, sepia, dark, and night themes, plus adjustable font sizes.
🖼️ Image OCR (translate text in pictures) - right-click any image ("OCR & translate this image"), open a local image file (PNG, JPEG, GIF, BMP, WebP), or turn on "Use OCR for images" for PDFs and EPUBs. The extension recognizes the text baked into pictures and lays it over them as real text, so the browser's "Translate page" translates that too. English works offline; more languages download on demand.
🔒 100% local & private - everything runs entirely on your device. Your documents are never uploaded to any server.
🔄 One-click original - instantly toggle back to the browser's native viewer.

How to use:
1. Install the extension.
2. Open any supported document in your browser, or click the extension icon to select a local file.
3. Right-click anywhere on the page and select "Translate" to translate the entire document into your language for free.

Privacy: Everything runs on your device. The extension never uploads your documents anywhere - it has no server to send them to. The only network access is your browser's own translation feature, which you trigger yourself.

Limitations: Scanned/image-only PDFs have no text to translate (the extension detects this and offers the original); files served without a ".pdf"/".epub" address aren't auto-detected; EPUBs are shown with the viewer's own clean reading style rather than the book's original design; DRM-protected EPUBs can't be read; ligatures in some PDF fonts may render imperfectly (a PDF.js limitation).