Photo-Lux is an easy-to-use but powerful and fast image viewer and more.
The following graphics formats are supported: BMP, CEL/PIC, CUR,
CUT, DIB, EMF, FAX, G3N/G3F, GIF, ICB, ICO, J2C/J2K/JP2/JPC(JPEG2000),
JPC, JPG/JPEG (RGB, GrayScale, YCbCr, CMYK, YCbCrK), JFIF/JIF, PBM,
PCD, PCX/DCX, PSD/PDD, PSP, PGM, PNG, PPM, PXM, RGB/RGBA, RLA/RPF, RLE,
SGI/BW, TGA, TIF/TIFF, VDA/VST, WMF, WBMP, XIF. Plus, it supports a lot of Camera RAWs formats.
