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The PPM format is not compressed, and thus requires more space and bandwidth than a compressed format would. For example, the above 192×128 PNG (Portable Network Graphics) image has a file size of 166 bytes. When converted to a 192×128 PPM image, the file size is 73,848 bytes.
Netpbm format is a family including the portable pixmap file format (PPM), the portable graymap file format (PGM) and the portable bitmap file format (PBM). These are either pure ASCII files or raw binary files with an ASCII header that provide very basic functionality and serve as a lowest common denominator for converting pixmap, graymap, or ...
Portable Network Graphics World Wide Web Consortium.png image/png General purpose Yes PNM: Portable Anymap File Format ASCII.pnm image/x-portable-anymap Yes PostScript: page description/scripting language, levels 1–3 Adobe.ps, .ps2, .ps3 printing/publishing industry standard format PPM: Portable Pixmap File Format ASCII.ppm image/x-portable ...
JPEG Network Graphics (JNG, / ˈ dʒ ɪ ŋ /) is a JPEG-based graphics file format which is closely related to PNG: it uses the PNG file structure (with a different signature) as a container format to wrap JPEG-encoded image data. JNG was created as an adjunct to the MNG animation format, but may be used as a stand-alone format. JNG files embed ...
PMView reads and writes and converts between more than 40 image file formats, shows the images on the screen, single and in slide shows, rotates or mirrors them, changes sizes and color depth, crops parts out of the images, and provides global editing of the image, all this individually on the image displayed on the screen, by prerecorded macros called batch scripts on a range of images, or ...
It is used in the GIF format, introduced in 1987. [38] DEFLATE, a lossless compression algorithm specified in 1996, is used in the Portable Network Graphics (PNG) format. [39] Wavelet compression, the use of wavelets in image compression, began after the development of DCT coding. [40] The JPEG 2000 standard was introduced in 2000. [41]
libpng is the official Portable Network Graphics (PNG) reference library (originally called pnglib). It is a platform-independent library that contains C functions for handling PNG images. It supports almost all of PNG's features, is extensible, and has been widely used and tested for over 28 years.
It is used in the GIF format, introduced in 1987. [16] DEFLATE, a lossless compression algorithm developed by Phil Katz and specified in 1996, is used in the Portable Network Graphics (PNG) format. [17] The JPEG 2000 standard was developed from 1997 to 2000 by a JPEG committee chaired by Touradj Ebrahimi (later the JPEG president). [18] In ...
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