With XnView you can view and convert almost all type media files (e.g. .dds; .prv for PANZERS).
It has the features :
Import about 400 graphic file formats
Export about 50 graphic file formats
Multipage TIFF, Animated GIF, Animated ICO support
Image IPTC, EXIF metadata support
EXIF auto rotation support
Resize, rotate, crop support
Lossless rotate & crop (jpeg) support
Adjust brightness, contrast...
Auto levels, contrast
Modify number of colors
Apply filters (blur, average, emboss, ...)
Apply effects (lens, wave, ...)
Slide show with effects
Batch convert, batch rename
Create WEB page easily
Create contact Sheet
Create or edit Multi-page file (TIFF, DCX, LDF)
TWAIN & WIA support (Windows only)
Print support (Windows only)
Drag & Drop support (Windows only)
Compare image side by side
44 languages support (Windows only)
And many many other things...
No Adware, No Spyware
XnView is provided as FREEWARE for private non-commercial or educational use (including non-profit organization.