Descriptions : Perfect Viewer is a very fast picture / comics / e-book viewer.
+ Page layout: auto single page, auto double page, automatic change according to screen orientation
+ Supports the eEook file format: EPUB, HTML, TXT
+ Supports image file formats: JPEG, PNG, GIF, BMP, WebP, TIFF
+ Supported archive file format: CBZ / ZIP, CBR / RAR, 7Z / CB7, LZH, CBT / TAR
+ Supports PDF, XPS and DJVU files after installing the PDF plugin
+ Open file from network file sharing (CIFS / SAMBA), FTP, SFTP, FTPS, OPDS
+ Internet authorization required for CIFS / SAMBA support.
+ Supports open files from Google Drive, Dropbox, OneDrive after installing the source plugin
+ Requires "GET_ACCOUNTS" and "USE_CREDENTIALS" permission to support Google Drive
+ Supports 3 viewer modes: page mode, vertical scroll mode (PDF viewer, webtoon-like) and horizontal scroll mode.
+ Smoothing filter: averaging, bilinear, bicubic, Lanczos3;
+ Five view modes: Full size, Fit screen, Fit width, Fit height, Fixed size, Stretch;
+ Support left to right and right to left reading
+ Set picture as wallpaper
+ Browse image in folder / archive as thumbnail
+ Bookshelf function
+ Support pinch for zooming and fling gesture
+ Simple bookmark function
+ My favorites management
+ Caching the next and previous page
+ Easy file management (delete, rename)
+ Slide show
+ Support extracting files from archive
+ Adjust image brightness, contrast and gamma
+ Automatically cut off the white border.
+ Support Google Chromecast
+ Balloon magnifier
Required Android Versions : Ice Cream Sandwich [4.0.3–4.0.4] - Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]