- ePUB
- fb2 / fb2.zip
- mobi (unencrypted)
- CBZ
- CBR (not supported on Windows — use the Linux build under WSL if you need it)
- Book title
- Authors
- Description (sanitized HTML)
- Cover image
- Language
- Publisher
- Series information (name and number)
- Identifiers (ISBN, ASIN, Goodreads, DOI, etc.)
- Subjects/Genres
- Book title
- Authors
- Description (sanitized HTML)
- Cover image
- Language
- Publisher
- Series information (name and number)
- Identifiers (ISBN)
- Subjects/Genres
- Book title
- Authors
- Description
- Cover image
- Language
- Publisher
- Identifiers (ISBN, ASIN)
- Subjects/Genres
Note: Windows builds support CBZ only (CBR/RAR is not supported).
- Book title (from metadata or filename)
- Series information (Series and Number)
- Authors (writers, artists, editors, etc.)
- Description (Summary)
- Publisher
- Language
- Genres
- Cover image (first image in archive)
- Reading status (reading/complete)
- Highlights and annotations with chapter information
- Notes attached to highlights
- Reading progress percentage
- Rating (stars out of 5)
- Summary note (the one you can fill out at the end of the book)
- Stable page metadata (
pagemap_*) for stable page totals and optional synthetic page scaling (nightly / post-2025.10)
- Total reading time and pages
- Weekly reading statistics
- Reading activity heatmap with customizable scaling (automatic or fixed maximum)
- Per-book reading sessions and statistics
- Reading speed calculations
- Session duration tracking
- Book completions (used by Yearly Recap)