Ggobook: AI PDF & EPUB Reader

Read your PDFs and ebooks with AI explanations right alongside the text.

Ggobook brings your files, highlights, notes and AI reading guides into one place. Read a novel, work through a report or explore a difficult passage with explanations alongside the text.

READ YOUR BOOKS AND DOCUMENTS
Keep PDF, EPUB, DOCX, HTML and Markdown files organized in folders. Move between your books and everyday documents in one reading space.

GET AI HELP WHERE YOU READ
Add AI explanations directly below the text or in separate explanation blocks. Keep the original passage in view as you explore its meaning.

CREATE YOUR OWN AI READING GUIDES
Tell the AI what you want help understanding. Shape a reading guide through conversation, save it and apply it to your reading. Keep useful guides for later.

HIGHLIGHT WHAT MATTERS
Mark passages in different colors and add personal notes. Give your ideas a place beside the words that inspired them.

MAKE READING COMFORTABLE
Adjust text size, spacing, fonts and themes to suit your reading style. Explore vertical reading for Japanese, Korean and Chinese text, and a spacious reading layout on tablets.

READ AND SHARE TOGETHER
Organize documents in shared folders and share helpful AI reading guides with your group.

DISCOVER CLASSIC BOOKS
Browse the library and add a classic to your own shelf. Available titles and languages vary.

MORE ROOM FOR YOUR READING
Continue with more AI support and room for your documents. Explore subscription plans with higher AI usage and storage allowances. Features and limits vary by plan; see the app for current details.

Start with a book or document you want to understand.

Ggobook. Slow steps, deeper understanding.