How can I export specific value from the registry to a text file using the command line For example, I want to export HkeylocalMachineSoftwaremcafee to a text. Portable Network Graphics Wikipedia. Portable Network Graphics PNG23 is a raster graphicsfile format that supports lossless data compression. PNG was created as an improved, non patented replacement for Graphics Interchange Format GIF, and is the most widely used lossless image compression format on the Internet. PNG supports palette based images with palettes of 2. RGB or 3. 2 bit RGBA colors, grayscale images with or without alpha channel for transparency, and full color non palette based RGBRGBA 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. A PNG file contains a single image in an extensible structure of chunks, encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2. PNG files nearly always use file extension PNG or png and are assigned MIME media type imagepng. PNG was published as informational RFC 2. March 1. 99. 7 and as an ISOIEC standard in 2. History and developmenteditThe motivation for creating the PNG format was in early 1. LempelZivWelch LZW data compression algorithm used in the Graphics Interchange Format GIF format was patented by Unisys. There were also other problems with the GIF format that made a replacement desirable, notably its limit of 2. Portable-Eusing-Free-Registry-Cleaner_1.png' alt='No File Format Can Be Found In The Registry' title='No File Format Can Be Found In The Registry' />A January 1. Thoughts on a GIF replacement file format, had many propositions, which would later be part of the PNG file format. In this thread, Oliver Fromme, author of the popular DOSJPEG viewer QPEG, proposed the PING name, meaning PING is not GIF, and also the PNG extension. Although GIF allows for animation, it was decided that PNG should be a single image format. In 2. PNG published the Multiple image Network Graphics MNG format, with support for animation. Official list of all MIME types assigned by the IANA Internet Assigned Number Authority. MNG achieved moderate application support, but not enough among mainstream web browsers and no usage among web site designers or publishers. In 2. 00. 8, certain Mozilla developers published the Animated Portable Network Graphics APNG format with similar goals. APNG is a format that is natively supported by Gecko and Presto based web browsers and is also commonly used for thumbnails on Sonys Play. Station Portable system using the normal PNG file extension, and as of 2. APNG remains minimal despite being supported by all major browsers but Microsoft Edge. October 1. 99. 6 Version 1. PNG specification was released, and later appeared as RFC 2. It became a W3. C Recommendation on 1 October 1. December 1. 99. 8 Version 1. August 1. 99. 9 Version 1. November 2. 00. 3 PNG became an International Standard ISOIEC 1. This version of PNG differs only slightly from version 1. March 2. 00. 4 ISOIEC 1. PNG Working GroupeditThe original PNG specification was authored by an ad hoc group of computer graphics experts and enthusiasts. Discussions and decisions about the format were conducted by email. The original authors listed on RFC 2. Editor Thomas Boutell. Contributing Editor Tom Lane. Authors in alphabetical order Mark Adler, Thomas Boutell, Christian Brunschen, Adam M. Costello, Lee Daniel Crocker, Andreas Dilger, Oliver Fromme, Jean loup Gailly, Chris Herborth, Aleks Jakulin, Neal Kettler, Tom Lane, Alexander Lehmann, Chris Lilley, Dave Martindale, Owen Mortensen, Keith S. Pickens, Robert P. Poole, Glenn Randers Pehrson, Greg Roelofs, Willem van Schaik, Guy Schalnat, Paul Schmidt, Tim Wegner, Jeremy Wohl. File formateditA PNG file starts with an 8 bytesignature 9 see hex editor image on the rightValues. Purpose. 89. Has the high bit set to detect transmission systems that do not support 8 bit data and to reduce the chance that a text file is mistakenly interpreted as a PNG, or vice versa. E 4. 7In ASCII, the letters PNG, allowing a person to identify the format easily if it is viewed in a text editor. D 0. AA DOS style line ending CRLF to detect DOS Unix line ending conversion of the data. AA byte that stops display of the file under DOS when the command type has been usedthe end of file character. AA Unix style line ending LF to detect Unix DOS line ending conversion. Chunks within the fileeditAfter the header comes a series of chunks, each of which conveys certain information about the image. Chunks declare themselves as critical or ancillary, and a program encountering an ancillary chunk that it does not understand can safely ignore it. This chunk based storage layer structure, similar in concept to a container format or to Amigas. IFF, is designed to allow the PNG format to be extended while maintaining compatibility with older versionsit provides forward compatibility, and this same file structure with different signature and chunks is used in the associated MNG, JNG, and APNG formats. A chunk consists of four parts length 4 bytes, big endian, chunk typename 4 bytes, chunk data length bytes and CRC cyclic redundancy codechecksum 4 bytes. The CRC is a network byte order CRC 3. Length. Chunk type. Chunk data. CRC4 bytes. Length bytes. 4 bytes. Chunk types are given a four letter case sensitive ASCII typename compare Four. CC. The case of the different letters in the name bit 5 of the numeric value of the character is a bit field that provides the decoder with some information on the nature of chunks it does not recognize. The case of the first letter indicates whether the chunk is critical or not. If the first letter is uppercase, the chunk is critical if not, the chunk is ancillary. Critical chunks contain information that is necessary to read the file. If a decoder encounters a critical chunk it does not recognize, it must abort reading the file or supply the user with an appropriate warning. The case of the second letter indicates whether the chunk is public either in the specification or the registry of special purpose public chunks or private not standardised. Uppercase is public and lowercase is private. This ensures that public and private chunk names can never conflict with each other although two private chunk names could conflict. Ti 84 Plus Doom Game For Pc. The third letter must be uppercase to conform to the PNG specification. It is reserved for future expansion. Decoders should treat a chunk with a lower case third letter the same as any other unrecognised chunk. The case of the fourth letter indicates whether the chunk is safe to copy by editors that do not recognize it. If lowercase, the chunk may be safely copied regardless of the extent of modifications to the file. If uppercase, it may only be copied if the modifications have not touched any critical chunks. Critical chunkseditA decoder must be able to interpret critical chunks to read and render a PNG file. IHDR must be the first chunk it contains in this order the images width, height, bit depth, color type, compression method, filter method, and interlace method 1. PLTE contains the palette list of colors. IDAT contains the image, which may be split among multiple IDAT chunks. Such splitting increases filesize slightly, but makes it possible to generate a PNG in a streaming manner. The IDAT chunk contains the actual image data, which is the output stream of the compression algorithm. IEND marks the image end. The PLTE chunk is essential for color type 3 indexed color.