FULL FORM OF SOME FILE EXTENSIONS IN WINDOWS 7 OR XP OR VISTA (mostly on all operating system including mobiles and tablet)

Image Format :
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JPEG (Joint Photographic Experts Group)
JFIF (JPEG File Interchange Format)
Exif (Exchangeable image file format)
TIFF (Tagged Image File Format)
RAW refers to a family of raw image formats
DNG (Digital Negative) is an open raw image format
PNG (Portable Network Graphics)
GIF (Graphics Interchange Format)
BMP file format (Windows bitmap)
PPM-portable pixmap file format,
PGM (portable graymap file format)
PBM (portable bitmap file format )
TGA (TARGA)
ILBM (InterLeaved BitMap)
PCX (Personal Computer eXchange)
ECW (Enhanced Compression Wavelet)
IMG (ERDAS IMAGINE Image)
SID (multiresolution seamless image database, MrSID)
CD5 (Chasys Draw Image)
FITS (Flexible Image Transport System)
PGF (Progressive Graphics File)