FBReader Premium boasts a rich set of features that enhance the reading experience. One notable feature is its advanced reading tools, which include text-to-speech functionality using Android's native capabilities, allowing users to listen to their ebooks. Instant translation powered by Google Translate or DeepL enables readers to understand foreign language texts effortlessly.

The app supports a wide array of ebook formats, ensuring that users can access their entire library without compatibility issues. Formats supported include ePub (including ePub3), PDF, Kindle azw3, fb2(.zip), CBZ/CBR, common text formats like DOC, RTF, HTML, and TXT, DRM-free books, and titles protected with Readium LCP. This extensive format support makes FBReader Premium a versatile tool for avid readers.

Customization is at the heart of FBReader Premium's design. Users can personalize their reading environment with custom fonts and backgrounds, switch between day and night themes, and adjust brightness with a simple swipe. The app also includes extensive layout and gesture settings, providing a tailored experience. Furthermore, the built-in browser allows easy access to online catalogs and OPDS stores, while support for custom OPDS catalogs and direct placement of ebooks in the device’s Books folder ensures seamless integration with existing libraries.

FBReader Premium offers an extensive e-book library that supports a wide range of formats including ePub, PDF, Kindle azw3, fb2(.zip), CBZ/CBR, DOC, RTF, HTML, and TXT. This ensures that readers have access to almost any ebook they wish to read, making it a versatile choice for book enthusiasts.

The application is committed to copyright authenticity by supporting DRM-free books as well as titles protected with Readium LCP. This dedication to legitimate content distribution provides users with peace of mind, knowing they are accessing books through authorized channels.

With built-in support for various formats and a commitment to copyright compliance, FBReader Premium not only expands the availability of reading materials but also upholds industry standards for digital rights management.

One of the standout features of FBReader Premium is its broad format compatibility. The app reads almost any ebook format you can think of, from popular ones like ePub (including ePub3) and PDF to more specialized formats such as Kindle azw3 and comic books in CBZ/CBR format.

This level of compatibility ensures that no matter where your ebooks come from or what format they are in, FBReader Premium can handle them seamlessly. Whether you're downloading from online catalogs, using OPDS stores, or placing files directly into your deviceu2019s Books folder, the experience remains smooth and hassle-free.

By supporting such a diverse array of formats, FBReader Premium makes it easy for users to manage their entire ebook collection within a single application, enhancing both convenience and accessibility.