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Portable Network Graphics (PNG, officially pronounced / pɪŋ / [2][3] PING, colloquially pronounced / ˌpiːɛnˈdʒiː / [4] PEE-en-JEE) is a raster-graphics file format that supports lossless data compression. [5] PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF)—unofficially, the initials PNG stood for the recursive acronym "PNG's not GIF ...
pngcrush is a free and open-source command-line utility for optimizing PNG image files. It reduces the size of the file losslessly – that is, the resulting "crushed" image will have the same quality as the source image. The main purpose of pngcrush is to reduce the size of the PNG IDAT data stream by trying various combinations of compression ...
Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.
Lossy compression is most commonly used to compress multimedia data (audio, video, and images), especially in applications such as streaming media and internet telephony. By contrast, lossless compression is typically required for text and data files, such as bank records and text articles.
An image file format is a file format for a digital image. There are many formats that can be used, such as JPEG, PNG, and GIF. Most formats up until 2022 were for storing 2D images, not 3D ones. The data stored in an image file format may be compressed or uncompressed. If the data is compressed, it may be done so using lossy compression or lossless compression. For graphic design applications ...
This is a comparison of image file formats (graphics file formats). This comparison primarily features file formats for 2D images.
Data compression. In information theory, data compression, source coding, [1] or bit-rate reduction is the process of encoding information using fewer bits than the original representation. [2] Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy.
While some formats offer multiple compression systems, in general the format and the compression system are tied together. Other image formats should be avoided in most cases: BMP - Images are uncompressed, resulting in larger file sizes. Should usually be converted to PNG. TIFF - Should usually be converted to PNG or JPEG as discussed above.
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