Faststone MaxView
MaxView is a tiny, fast and innovative image viewer that supports all major graphic formats. Its intuitive layout and commands allow everyone, from beginners to professionals, to view and manipulate images quickly and efficiently.
Borderless window, auto hidden menus and toolbars that give a very clean look to the images and make the best use of screen space
Full screen viewer with Select - Zoom support
Crystal clear and customizable magnifier
Navigator for quick panning/scrolling of large images
View detailed image information including EXIF metadata
Slideshow with 150+ transitional effects and MP3/WAV/MIDI/WMA background music support
Lossless JPEG rotation
Single hotkey press to call external programs
Many hotkeys for image navigation and manipulation (copy/move/delete/rename/rotate)
Rich options/settings for personal preference
Undo, Redo and Mouse Wheel support
Common image formats support, including loading of JPEG, JPEG2000, GIF, BMP, PNG, PCX, TIFF, WMF, ICO, CUR, TGA and saving to JPEG, JPEG2000, TIFF, GIF, PCX, BMP, PNG, TGA
Digital camera RAW formats support, including CRW, CR2, NEF, PEF, RAF, MRW, ORF and DNG
And many more...
Faststone MaxView was free up until version 2.1. All later versions have a 45 day trial.