*Turn black/white image into 4 colorize image(Only available for donated users. Need install Perfect Viewer donation application).
*Page layout: Auto single page, Auto dual page, Auto switch by screen orientation
*Support eEook file format: EPUB, HTML, TXT
*Support image file format: JPEG, PNG, GIF, BMP, WebP, TIFF
*Support archive file format: CBZ/ZIP, CBR/RAR, 7Z/CB7, LZH, CBT/TAR
*Support PDF, XPS & DJVU file after install the PDF plugin
*Open file from network file sharing(CIFS/SAMBA), FTP, SFTP, FTPS, OPDS
*Require internet permission for CIFS/SAMBA support.
*Support open files from Google Drive, Dropbox, OneDrive after install the source plugin
*Require "GET_ACCOUNTS" and "USE_CREDENTIALS" permission for Google Drive support
*Smooth filters: Averaging, Bilinear, Bicubic, Lanczos3;
*Five view mode: Full size, Fit Screen, Fit Width, Fit Height, Fixed size, Stretch;
*Support Left-to-right & right-to-left reading
*Set image as wallpaper
*Browse image in folder/archive as thumbnail
*Support pinch to zoom & fling gesture
*Simple bookmark function
*My favorites management
*Cache next and previous page
*Simple file management(delete, rename)
*Adjust image brightness,contrast & gamma
*Auto cut off white border.
*Support Google Chromecast