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PNG
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. It is pronounced /ˈpɪŋ/ or spelled out as P-N-G. The PNG acronym...
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Lossless data compression
Lossless data compression is a class of data compression algorithms that allows the exact original data to be reconstructed from the compressed data. The term lossless is in contrast to lossy data compression, which only allows an approximation of...
File Formats:
Raster graphics
In computer graphics, a raster graphics image or bitmap is a data structure representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium. Raster images are stored in image files with...
Graphics File Formats
Here is a summary of the most common graphics file format:
Some file formats, e.g. PDF, allow both raster and vector graphics. This is because the underlying PostScript system of the Portable Document Format is designed to handle both methods of...
