[20], The disagreement over the pronunciation led to heated Internet debate. Convert your pictures to animated GIFs using our FREE and easy gif maker. [8], As a noun, the word GIF is found in the newer editions of many dictionaries. GIF means "Graphics Interchange Format" (image type). This technique was introduced originally as a way to avoid patent infringement. Make GIFs from other GIFs. Videos resolve many issues that GIFs present through common usage on the web. Although support for PNG format came slowly, new web browsers generally support PNG. The Full Answer Szn is…, A term that is widely used in texting and on…, Different meanings for different situations can make this slang term…, Away from the open glare of public social media feeds,…. Merriam-Webster's Collegiate Dictionary[17] and the OED cite both pronunciations, but place "gif" in the default position ("\ˈgif, ˈjif\"). [36] Unisys stated that they expected all major commercial on-line information services companies employing the LZW patent to license the technology from Unisys at a reasonable rate, but that they would not require licensing, or fees to be paid, for non-commercial, non-profit GIF-based applications, including those for use on the on-line services. Although GIF was not designed as an animation medium, its ability to store multiple images in one file naturally suggested using the format to store the frames of an animation sequence. By December 1987, for example, an Apple IIGS user could view pictures created on an Atari ST or Commodore 64. It was developed by CompuServe® in the late 1980s and grew in popularity with the proliferation of the Internet. The composite data stream is partitioned into sub-blocks that each carry from 1 to 255 bytes. [44][45], The United States LZW patent expired on 20 June 2003. The image data follows: one byte giving the bit width of the unencoded symbols (which must be at least 2 bits wide, even for bi-color images), followed by a linked list of sub-blocks containing the LZW-encoded data. An acronym that is widely used in texting and chat, and on Facebook, Twitter, Tumblr and elsewhere on the internet, but what does GIF mean? Since this was more efficient than the run-length encoding used by PCX and MacPaint, fairly large images could be downloaded reasonably quickly even with slow modems. [1] In 1989, CompuServe released an enhanced version, called 89a,[2] which added support for animation delays (multiple images in a stream were already supported in 87a), transparent background colors, and storage of application-specific metadata. A GIF marked 87a may contain extension blocks; the intent is that a decoder can read and display the file without the features covered in extensions it does not understand. GIF files are saved in a lossless format, meaning the clarity of the image is not compromised with GIF compression. Additionally, the GIF image format had both limited color depth and a large file size in the non-animated form, and animation just ballooned the size. This byte stream is stored in the file as a series of "sub-blocks". Each frame can designate one index as a "transparent background color": any pixel assigned this index takes on the color of the pixel in the same position from the background, which may have been determined by a previous frame of animation. [according to whom?] An acronym that is widely used in texting and chat,…, An abbreviation that is widely used in texting and chat,…, There’s a lot more to ion than chemistry So, What…, A term that is widely used in texting and chat,…, Quick Definition Szn means season. The series of sub-blocks is terminated by an empty sub-block (a single 0 byte, indicating a sub-block with 0 data bytes). Conversely, the symbol width could be set at 8, even if only values 0 and 1 are used; these data would only require a two-color table. In 1983, Terry Welch developed a fast variant of LZ78 which was named Lempel–Ziv–Welch (LZW).[35][36]. These techniques sacrifice spatial resolution to approximate deeper color resolution. Though GIF files don't contain audio data, they're often seen online as a way to share video clips. [66][67], In January 2016, Telegram started re-encoding all GIFs to MPEG4 videos that "require up to 95% less disk space for the same image quality. Web graphics formats can be either bitmap (raster) or vector. We know 174 definitions for GIF abbreviation or acronym in 8 categories. [1] It has since come into widespread usage on the World Wide Web due to its wide support and portability between applications and operating systems. WebM and WebP are in development and are supported by some web browsers. ; What does GIF mean? Definition of GIF : a computer file format for the compression and storage of visual digital information also : an image or video stored in this format Using emoji, emoticons and GIFs in a texted conversation instantly signals the difference between sincerity and a joke or sarcasm. The Extensible Metadata Platform (XMP) metadata standard introduced an unofficial but now widespread "XMP Data" application extension block for including XMP data in GIF files. The acronym GIF stands for "Graphics Interchange Format." Name Pictures and Photos. GIPHY is your top source for the best & newest GIFs & Animated Stickers online. The size and color quality of animated GIF files can vary significantly depending on the application used to create them. CompuServe encouraged the adoption of GIF by providing downloadable conversion utilities for many computers. This allows a partial display of the image that can be recognized before the full image is painted. Controversy over the licensing agreement between the software patent holder, Unisys, and CompuServe in 1994 spurred the development of the Portable Network Graphics (PNG) standard. The GIF encoding process can be modified to create a file without LZW compression that is still viewable as a GIF image. The following example shows the structure of the animation file Rotating earth (large).gif shown (as a thumbnail) in the article's infobox. [32] Most browsers now recognize and support NAB, though it is not strictly part of the GIF89a specification. The format supports up to 8 bits per pixel for each image, allowing a single image to reference its own palette of up to 256 different colors chosen from the 24-bit RGB color space. [43] Despite giving free licenses to hundreds of non-profit organizations, schools and governments, Unisys was completely unable to generate any good publicity and continued to be condemned by individuals and organizations such as the League for Programming Freedom who started the "Burn All GIFs" campaign in 1999. A GIF file is an image file saved in the Graphical Interchange Format (GIF). Thus in the upper block there are 2n − 3 codes available to the decoder that won't trigger an increase in code width. It is economical to store at each address only two words: an existing address and one character. All of these methods technically require the metadata to be broken into sub-blocks so that applications can navigate the metadata block without knowing its internal structure. Required fields are marked *. The encoding process that produces the 9-bit codes is shown below. Notable examples are Gfycat and Imgur and their GIFV metaformat, which is really a video tag playing a looped MP4 or WebM compressed video. GIFs are typically used as memes, to portray an emotion or a reaction, such as in this example, which is used to show shock: In the early days, most GIFs were moving icons (e.g., flashing "Buy Now!" The color definitions in the palette can be drawn from a color space of millions of shades (224 shades, 8 bits for each primary), but the maximum number of colors a frame can use is 256. [18] The New Oxford American Dictionary gave only "jif" in its 2nd edition[19] but updated it to "jif, gif" in its 3rd edition. Pictures to GIF. fing. Simple graphics, line drawings, cartoons, and grey-scale photographs typically need fewer than 256 colors. At the time, CompuServe was not aware of the patent. Affordable and search from millions of royalty free images, photos and vectors. The PNG format (see below) was developed in 1995 as an intended replacement. The series of sub-blocks is terminated by an empty sub-block (a 0 byte). An uncompressed GIF file can be converted to an ordinary GIF file simply by passing it through an image editor. A block of image data begins with a byte that declares the number of bytes to follow. Both the 87a and 89a specifications allow color tables of 2n colors for any n from 1 through 8. The pixel codes typically don't match the 8-bit size of the bytes, so the codes are packed into bytes by a "little-Endian" scheme: the least significant bit of the first code is stored in the least significant bit of the first byte, higher order bits of the code into higher order bits of the byte, spilling over into the low order bits of the next byte as necessary. [31] This block, placed immediately before the sequence of animation frames, specifies the number of times the sequence of frames should be played (1 to 65535 times) or that it should repeat continuously (zero indicates loop forever). Preparing Microsoft Paint: Copy first. The evolution of animated GIFs. There is special treatment of the first two pixels that arrive before the table grows from its initial size by additions of strings. For instance the libungif library, based on Eric S. Raymond's giflib, allows creation of GIFs that followed the data format but avoided the compression features, thus avoiding use of the Unisys LZW patent. Support for these repeating animations first appeared in Netscape Navigator version 2.0, and then spread to other browsers. CompuServe introduced GIF on 15 June 1987 to provide a color image format for their file downloading areas. Portable Network Graphics (PNG) was designed as a replacement for GIF in order to avoid infringement of Unisys' patent on the LZW compression technique. GIF became popular because it used LZW data compression. [41], In August 1999, Unisys changed the details of their licensing practice, announcing the option for owners of certain non-commercial and private websites to obtain licenses on payment of a one-time license fee of $5000 or $7500. For identical 8-bit (or lower) image data, PNG files are typically smaller than the equivalent GIFs, due to the more efficient compression techniques used in PNG encoding. This yields a simpler encoding (a 1-to-1 correspondence between code values and palette codes) but sacrifices all of the compression: each pixel in the image generates an output code indicating its color index. A GIF is a short, animated picture, without sound. [38] LZW became a popular data compression technique and, when the patent was granted, Unisys entered into licensing agreements with over a hundred companies. To facilitate displaying animations, the GIF89a spec added the Graphic Control Extension (GCE), which allows the images (frames) in the file to be painted with time delays, forming a video clip. Popular on social media platforms such as Tumblr, Facebook and Twitter. Browsers or other displays that do not support animated GIFs typically show only the first frame. In September 1995 Netscape Navigator 2.0 added the ability for animated GIFs to loop. This replaced their earlier run-length encoding format, which was black and white only. Share the best GIFs now >>> The data is stream-oriented, so the file offset of the start of each GCE depends on the length of preceding data. [49] Gamma correction of PNG images was not supported before version 8, and the display of these images in earlier versions may have the wrong tint.[50]. [35][36][38] However, obtaining support from the makers of Web browsers and other software for the PNG format proved difficult and it was not possible to replace GIF, although PNG has gradually increased in popularity. The last block of data for an image is marked by a zero block-length byte. Because the decoder is always one step behind in maintaining the table, it does not generate a table entry upon receiving the first code from the encoder, but will generate one for each succeeding code. Therefore, the JPEG format, which supports millions of colors, is more commonly used for storing digital photos. After each output code, the local string is initialized to the latest pixel color (that could not be included in the output code). Although GIF is almost never used for true color images, it is possible to do so. The resulting patent, US 4558302 , granted in December 1985, was assigned to Sperry Corporation who subsequently merged with Burroughs Corporation in 1986 and formed Unisys. Unlike video, the GIF file format does not support audio. A local string accumulates pixel color numbers from the palette, with no output action as long as the local string can be found in a code table. [60], High Efficiency Image File Format (HEIF) is an image file format, finalized in 2015, which uses a discrete cosine transform (DCT) lossy compression algorithm based on the HEVC video format, and related to the JPEG image format. [22], In February 2020, The J.M. Nevertheless, Unisys was subjected to thousands of online attacks and abusive emails from users believing that they were going to be charged $5000 or sued for using GIFs on their websites. These palette limitations make GIF less suitable for reproducing color photographs and other images with color gradients, but well-suited for simpler images such as graphics or logos with solid areas of color. An acronym that is widely used in texting and chat, and on Facebook, Twitter, Tumblr and elsewhere on the internet, but what does GIF mean? The GIF was simply the best and most versatile image format around said Alexander “Sandy” Trevor, the former chief technical officer of CompuServe who managed the GIF team. The 89a specification also supports incorporating text labels as text (not embedding them in the graphical data), but as there is little control over display fonts, this feature is not widely used. In 2012, the American wing of the Oxford University Press recognized GIF as a verb as well, meaning "to create a GIF file", as in "GIFing was the perfect medium for sharing scenes from the Summer Olympics". Make GIFs from videos on your phone or computer. GIF files start with a fixed-length header ("GIF87a" or "GIF89a") giving the version, followed by a fixed-length Logical Screen Descriptor giving the pixel dimensions and other characteristics of the logical screen. 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