Image Formats:

.bmp=Windows or OS/2 Bitmap File
.cut=Dr. Halo
.dds=DirectDraw Surface
.exr=OpenEXR format
.g3=Raw Fax format CCITT G3
.gif=Graphics Interchange Format
.iff=Amiga IFF
.lbm=Amiga IFF
.j2k=JPEG-2000 format
.j2c=JPEG-2000 format
.jng=JPEG Network Graphics
.jp2=JPEG-2000 format
.jpeg=Independent JPEG Group
.jpg=Independent JPEG Group
.jpe=Independent JPEG Group
.jif=Independent JPEG Group
.jxr=JPEG XR Image Format.
.koala=Commodore 64 Koala format
.mng=Multiple Network Graphics
.pcd=Kodak PhotoCD
.pcx=Zsoft Paintbrush PCX bitmap format
.pfm=Portable FloatMap
.pict=Macintosh PICT
.png=Portable Network Graphics
.pgm=Portable Graymap (ASCII) - Portable Graymap (BINARY)
.pbm=Portable Bitmap (ASCII) - Portable Bitmap (BINARY)
.ppm=Portable Pixelmap (ASCII) - Portable Pixelmap (BINARY)
.psd=Adobe Photoshop
.ras=Sun Rasterfile
.sgi=Silicon Graphics SGI image format
.targa=truevision Targa files
.tga=truevision Targa files
.tif=Tagged Image File Format
.tiff=Tagged Image File Format
.wbmp=Wireless Bitmap
.xbm=X11 Bitmap Format
.xpm=X11 Pixmap Format
.bay=Casio Digital Camera Raw File Format.
.bmq=NuCore Raw Image File.
.cr2=Canon Digital Camera RAW Image Format version 2.0. These images are based on the TIFF image standard.
.crw=Canon Digital Camera RAW Image Format version 1.0.
.cs1=Capture Shop Raw Image File.
.dc2=Kodak DC25 Digital Camera File.
.dcr=Kodak Digital Camera Raw Image Format for these models: Kodak DSC Pro SLR/c, Kodak DSC Pro SLR/n, Kodak DSC Pro 14N, Kodak DSC PRO 14nx.
.dng=Adobe Digital Negative: DNG is publicly available archival format for the raw files generated by digital cameras. By addressing the lack of an open standard for the raw files created by individual camera models, DNG helps ensure that photographers will be able to access their files in the future.
.erf=Epson Digital Camera Raw Image Format.
.fff=Imacon Digital Camera Raw Image Format.
.hdp=HDPhoto Image Format.
.hdr=Leaf Raw Image File.
.k25=Kodak DC25 Digital Camera Raw Image Format.
.kdc=Kodak Digital Camera Raw Image Format.
.mdc=Minolta RD175 Digital Camera Raw Image Format.
.mos=Mamiya Digital Camera Raw Image Format.
.mrw=Minolta Dimage Digital Camera Raw Image Format.
.nef=Nikon Digital Camera Raw Image Format.
.orf=Olympus Digital Camera Raw Image Format.
.pef=Pentax Digital Camera Raw Image Format.
.pxn=Logitech Digital Camera Raw Image Format.
.raf=Fuji Digital Camera Raw Image Format.
.raw=Panasonic Digital Camera Image Format.
.rdc=Digital Foto Maker Raw Image File.
.sr2=Sony Digital Camera Raw Image Format.
.srf=Sony Digital Camera Raw Image Format for DSC-F828 8 megapixel digital camera or Sony DSC-R1
.arw=Sony Digital Camera Raw Image Format for Alpha devices.
.3fr=Hasselblad Digital Camera Raw Image Format.
.cine=Phantom Software Raw Image File.
.ia=Sinar Raw Image File.
.kc2=Kodak DCS200 Digital Camera Raw Image Format.
.mef=Mamiya Digital Camera Raw Image Format.
.nrw=Nikon Digital Camera Raw Image Format.
.qtk=Apple Quicktake 100/150 Digital Camera Raw Image Format.
.raw=Direct output from a CCD in a digital camera. Usually camera makers uses different extensions.
.rw2=Panasonic LX3 Digital Camera Raw Image Format.
.sti=Sinar Capture Shop Raw Image File.
.drf=Kodak Digital Camera Raw Image Format.
.dsc=Kodak Digital Camera Raw Image Format.
.ptx=Pentax Digital Camera Raw Image Format.
.cap=Phase One Digital Camera Raw Image Format.
.iiq=Phase One Digital Camera Raw Image Format.
.rwz=Rawzor Digital Camera Raw Image Format.
.webp=Google web image.
.wdp=Windows Media Photo Image Format.