photo viewer, organizer and converter
XnView Portable is an easy-to-use photo viewer, organizer and converter. It's packaged as a portable app, so you view and alter your photos on the go. It's freeware for personal and educational use.
Features
-Export about 50 graphic file formats
-Multipage TIFF, Animated GIF, Animated ICO support
-Image IPTC, EXIF metadata support
-EXIF auto rotation support
-IPTC editing
-Resize, rotate, crop support
-Adjust brightness, contrast...
-Auto levels, contrast
-Modify number of colors
-Apply filters (blur, average, emboss, ...)
-Apply effects (lens, wave, ...)
-Fullscreen mode
-Slide show with effects
-Batch convert, batch rename
-Create WEB page easily
-Screen capture
-Create contact Sheet
-Create or edit Multi-page file (TIFF, DCX, LDF)
-TWAIN & WIA support
-Print support
-Drag & Drop support
-Filmstrip layout
-Automatic support for Ghostscript Portable
-44 languages support
-And many many other things...
https://portableapps.com