Perfect Viewer is packed with features that cater to both casual readers and comic aficionados. The app's ability to turn black and white images into four-colorized images (exclusive to donated users) adds a unique touch to the reading experience. With support for three distinct viewer modes - Page mode, Vertical scroll mode, and Horizontal scroll mode - users can customize their reading style according to their preferences.

The app also includes five view modes ranging from full size to stretch, ensuring that content looks great on any device. Advanced functionalities such as pinch to zoom, fling gesture, and balloon magnifier enhance interactivity, while simple bookmarking and favorites management allow for easy organization. Additionally, Perfect Viewer's support for Google Chromecast enables users to cast their comics or eBooks onto larger screens for a more immersive experience.

Perfect Viewer offers an extensive comic library that supports multiple file formats including CBZ/ZIP, CBR/RAR, 7Z/CB7, LZH, and CBT/TAR. This ensures that users can access a wide variety of comics without worrying about compatibility issues.

In addition to supporting various comic file formats, the app also allows users to open files from network file sharing (CIFS/SAMBA), FTP, SFTP, FTPS, and OPDS. This feature significantly expands the range of accessible content, making it easier for users to discover and enjoy new comics.

The application further enhances its comic library by integrating with cloud services like Google Drive, Dropbox, and OneDrive through an additional plugin. This integration enables users to seamlessly access their digital collections stored in the cloud, ensuring they have their favorite comics at their fingertips no matter where they are.

Perfect Viewer places a strong emphasis on content authenticity and licensing. The app supports legally obtained comics and eBooks in various formats, ensuring that creators' rights are respected while providing users with high-quality reading material.

For users who require PDF, XPS, and DJVU file support, Perfect Viewer offers a dedicated plugin. This ensures that all types of documents are displayed accurately and authentically, preserving the original formatting and layout intended by the authors and publishers.

Furthermore, the app includes features such as setting images as wallpapers and adjusting image brightness, contrast, and gamma. These tools not only enhance the reading experience but also ensure that the visual integrity of the content is maintained, offering readers an authentic and enjoyable viewing experience.