FBReader is a powerful and flexible ebook reader for Windows, designed for comfortable reading and easy access to your digital library. It is part of the FBReader ecosystem and is also available on macOS, Linux, iOS, and Android, allowing you to read your books on all your devices. KEY FEATURES • Comfortable reading Customizable fonts, text sizes, and colors for day and night modes. Advanced navigation tools and bookmarks make long reading sessions easy and enjoyable. • Flexible book sources Download books from a wide range of online catalogs, both free and paid. You can also open books from your local library or add your preferred OPDS catalogs. The built-in catalog browser supports search, bookmarks, and browsing history. • Seamless cloud synchronization Your books, reading positions, and bookmarks are synchronized across all your devices. Start reading on your Windows PC and continue from the same place on your phone or tablet. • Wide format support FBReader supports popular ebook formats including ePub (with most ePub3 features), unencrypted Kindle azw3 (Mobipocket), and fb2 (.zip). Additional supported formats include RTF, DOC (Microsoft Word), HTML, and plain text. • Readium LCP support FBReader can open DRM-free books as well as ePub files protected with Readium LCP.