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Informações sobre o formato de arquivo PNG

Nome PNG
Nome completo PNG - Portable Network Graphics
Extensão de arquivo .png
Tipo MIME image/png
Desenvolvido por PNG Development Group
Tipo de formato lossless bitmap image format
Descrição Portable Network Graphics (PNG) is a raster graphics file format that supports lossless data compression. PNG was created as an improved, non-patented replacement for Graphics Interchange Format (GIF), and is the most used lossless image compression format on the Internet. PNG itself does not support animation at all. MNG is an extension to PNG that does; it was designed by members of the PNG Group.
Detalhes técnicos 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.
Programas associados Adobe Photoshop, Paint Shop Pro, the GIMP, GraphicConverter, Helicon Filter, ImageMagick, Inkscape, IrfanView, Pixel image editor, Paint.NET, Xara Photo & Graphic Designer.
Wiki https://en.wikipedia.org/wiki/Portable_Network_Graphics