Portable Network Graphics (PNG) is a bitmapped image format that employs lossless data compression. PNG was created to improve upon and replace GIF (Graphics Interchange Format) as an image-file format not requiring a patent license.
PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without alpha channel), and full-color non-palette-based RGB[A] images (with or without alpha channel). PNG was designed for transferring images on the Internet, not for professional-quality print graphics, and therefore does not support non-RGB color spaces such as CMYK. Wikipedia
Microsoft Windows Photo Viewer, Microsoft Paint, Adobe Photoshop CS6, Adobe Photoshop Elements 10, Adobe Illustrator CS6, CorelDRAW Graphics Suite X6, Corel PaintShop Pro X4, ACDSee Photo Manager 14 , ACD Systems Canvas 12, Roxio Creator 2012 , Other picture viewer, Other Web browser
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MIME type : image/png, application/png, application/x-png