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Encyclopedia > Free file format

A free file format is a file format that is free of any patents or copyright. They should have a freely available specification. Free file formats are good for interoperability and to prevent vendor lock-in. It is a cornerstone in open systems. A file format is a particular way to encode information for storage in a computer file. ... A patent is a set of exclusive rights granted by a government to an inventor or applicant for a limited amount of time (normally maximum 20 years from the filing date, depending on extension). ... Not to be confused with copywriting. ... In economics, vendor lock-in, also known as proprietary lock-in, customer lock-in, lock-in is where a customer is dependent on a vendor for products and services and cannot move to another vendor without substantial switching costs, real and/or perceived. ... An open system may refer to: Open system (computing), one of a class of computers that provides some combination of interoperability, portability and open software standards, particularly Unix and Unix-like systems Open system (computer science), in the computer sciences a collection of interacting software, hardware, and human components with...

Contents

Archiving and compression

  • 7z — for both archiving and compression.
  • SQX — for both archiving and compression.
  • PAQ — for compression.
  • bzip2 — for compression.
  • gzip — for compression.
  • tar — for archiving.

7z is a compressed archive file format that supports several different data compression, encryption and pre-processing filters. ... The SQX-format is an open and free archive format. ... PAQ is a series of open source data compression archivers that have evolved through collaborative development to top rankings on several benchmarks measuring compression ratio (although at the expense of speed and memory usage). ... The correct title of this article is . ... The correct title of this article is . ... In computing, tar (derived from tape archive) is both file format (in the form of a type of archive bitstream) and the name of the program used to handle such files. ...

Multimedia

PNG (Portable Network Graphics), sometimes pronounced as ping, is a relatively new bitmap image format that is becoming popular on the World Wide Web and elsewhere. ... Lossless data compression is a class of data compression algorithms that allows the exact original data to be reconstructed from the compressed data. ... Multiple-image Network Graphics (MNG) (IPA pronunciation: ) is a public graphics file format for animated images. ... SVG redirects here. ... Example showing effect of vector graphics versus raster graphics. ... Ogg is an open standard for a free container format for digital multimedia, unrestricted by software patents and designed for efficient streaming and manipulation. ... Vorbis is an open source, lossy audio codec project headed by the Xiph. ... Software patent does not have a universally accepted definition. ... For other uses, see MP3 (disambiguation). ... Audio compression can mean two things: Audio data compression - in which the amount of data in a recorded waveform is reduced for transmission. ... Theora is a video codec being developed by the Xiph. ... FLAC, an acronym for Free Lossless Audio Codec, is a popular file format for audio data compression. ... Speex is a free software speech codec that may be used on VoIP applications and podcasts. ... CMML stands for Continuous Media Markup Language and is to audio or video what HTML is to text. ... // The Matroska Multimedia Container is an open standard free multimedia container format that can hold an unlimited number of video, audio, picture or subtitle tracks inside a single file. ... Musepack or MPC is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160-180 kbit/s. ... WavPack is a free, open source lossless audio compression format developed by David Bryant. ... SMIL (pronounced or smile), the Synchronized Multimedia Integration Language, is a W3C Recommended XML markup language for describing multimedia presentations. ... XML Shareable Playlist Format (XSPF), pronounced spiff, is an XML-based playlist format for digital media, sponsored by the Xiph. ...

Text

DVI (DeVice Independent) is the output file format of the TeX typesetting program, designed by Donald Knuth in 1979. ... HTML, short for Hypertext Markup Language, is the predominant markup language for web pages. ... The Extensible HyperText Markup Language, or XHTML, is a markup language that has the same depth of expression as HTML, but also conforms to XML syntax. ... A specialized markup language using SGML is used to write the electronic version of the Oxford English Dictionary. ... A screenshot of a web page. ... This article is about the typesetting system. ... Semi-official ODF logo The OpenDocument format (ODF, ISO/IEC 26300, full name: OASIS Open Document Format for Office Applications) is a file format for electronic office documents, such as spreadsheets, charts, presentations, databases and word processing documents (e. ... For the literary term, see Postscript. ... A page description language (PDL) is a language that describes the contents of a printed page in a higher level than an actual output bitmap. ... A programming language is an artificial language that can be used to control the behavior of a machine, particularly a computer. ... The Rich Text Format (often abbreviated to RTF) is a proprietary document file format developed by Microsoft in 1987 for cross-platform document interchange. ... It has been suggested that this article or section be merged with Plain text. ...

Other

  • CSV — spreadsheet file formats.
  • CSS — style sheet format.
  • DjVu — for scanned images.
  • EAS3 — binary file format for floating point data
  • ELF — Executable and Linkable Format.
  • NZB — for multipart binary files on Usenet.
  • SDXF — the Structured Data eXchange Format.
  • SFV — checksum.
  • XML — a general-purpose markup language.
    • RSS — syndication.
  • YAML — human readable data serialization format.

The comma-separated values (or CSV; also known as a comma-separated list or comma-separated variables) file format is a file type that stores tabular data. ... “CSS” redirects here. ... DjVu (pronounced déjà vu) is a computer file format designed primarily to store scanned images, especially those containing text and line drawings. ... The EAS3 logo The EAS3 (EAS = Ein-Ausgabe-System) toolkit for binary I/O of structured floating-point data including geometry information. ... A floating-point number is a digital representation for a number in a certain subset of the rational numbers, and is often used to approximate an arbitrary real number on a computer. ... In computing, the Executable and Linking Format (ELF, formerly called Extensible Linking Format) is a common standard file format for executables, object code, shared libraries, and core dumps. ... NZB is an XML-based file format for retrieving posts from NNTP (Usenet) servers. ... Usenet (USEr NETwork) is a global, decentralized, distributed Internet discussion system that evolved from a general purpose UUCP architecture of the same name. ... SDXF stands for Structured Data eXchange Format. This Format is also published as an Internet RFC (see http://www. ... Simple file verification (SFV) is a file format for storing CRC32 checksums of files in order to verify the integrity of files. ... The Extensible Markup Language (XML) is a W3C-recommended general-purpose markup language that supports a wide variety of applications. ... A specialized markup language using SGML is used to write the electronic version of the Oxford English Dictionary. ... For other meanings of RSS, see RSS (disambiguation). ... YAML (Rhymes with camel) (IPA pronunciation: ) is a human-readable data serialization format that takes concepts from languages such as XML, C, Python, Perl, as well as the format for electronic mail as specified by RFC 2822. ...

See also

Free software Portal

  Results from FactBites:
 
Free file format - Wikipedia, the free encyclopedia (115 words)
A free file format is a file format that is free of any patents or copyright.
Free file formats are good for interoperability and to prevent vendor lock-in.
NZB — for multipart binary files on Usenet.
File format at AllExperts (2032 words)
Other file formats, however, are designed for storage of several different types of data: the GIF format supports storage of both still images and simple animations, and the QuickTime format can act as a container for many different types of multimedia.
Many file formats, including some of the most well-known file formats, have a published specification document (often with a reference implementation) that describes exactly how the data is to be encoded, and which can be used to determine whether or not a particular program treats a particular file format correctly.
Since files are seen by programs as streams of data, a method is required to determine the format of a particular file within the filesystem—an example of metadata.
  More results at FactBites »


 

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