*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 Windows, Linux etc. network file sharing(CIFS/SAMBA) *Require internet permission for CIFS/SAMBA support. *Support image file format: JPEG,PNG,GIF,BMP,WebP *Support archive file format: CBZ/ZIP,CBR/RAR,7Z/CB7,LZH *Support PDF file after install the PDF plugin *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 *Bookshelf function *Support pinch to zoom & fling gesture *Simple bookmark function *My favorites management *Cache next and previous page *Simple file management(delete, rename) *Slideshow *Adjust image brightness,contrast & gamma *Auto cut off white border. *Support Google Chromecast