Gruno is a powerful comic, manga, and book reader built for people who love organizing and reading their collection their way. Read offline, connect to OPDS catalogs, and keep your entire library in one clean place.
Whether you read manga, comics, or PDFs, Gruno gives you control over your library and your reading experience.
📚 What you can do with Gruno
📖 Read your way
Smooth horizontal or vertical reading
Right-to-left mode for manga
Stable reader for long sessions
Automatic reading progress
🗂 Organize your library
Manage large comic and manga collections easily
Sort by name or date
Multiple view modes: small grid, large grid, or detailed list
Fast thumbnail and list loading
🌐 OPDS support (experimental)
Connect to OPDS 1.2 and 2.0 servers
Browse online catalogs
Import content into your personal library
📦 Broad format support
CBR, CBZ, CB7
PDF
Image formats including WebP
🎨 Clean and customizable interface
Light and Dark themes
Consistent design focused on reading
⚡ Built for performance
Fast library navigation
Optimized memory usage
Stable even with large collections
⭐ Premium
Unlock advanced features with a subscription, or make a one-time purchase to unlock the current main version permanently.
🔒 Privacy
Gruno needs access to your device files to scan and open comics and PDFs stored locally.
Your files are never uploaded to external servers.