- 3D WebGL page-flip rendering, with a 2D CSS fallback when WebGL is unavailable
- PDF and image sources
- Automatic PDF links, text search, and table of contents (outline)
- 7 color schemes (Slate, Paper, Midnight, Ocean, Forest, Glass, Sepia) with a dark/light theme toggle
- 20 interface languages with automatic right-to-left support
- Toolbar customization with selectable toolbar layouts
- Reading mode, vertical and horizontal scroll viewers, single-page mode, and lightbox popup
- Deep linking to a specific page (#page/N)
- Gutenberg blocks (embed, link, image-link) and shortcodes
- Full WCAG 2.1 AA accessibility (keyboard navigation, screen-reader support, focus indicators)
- Responsive design
