GIF

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Related to GIF file: GIF animation

GIF

Computing
a. a standard compressed file format used for pictures
b. a picture held in this format

GIF

[gif]
(computer science)

GIF

GIF

(Graphics Interchange Format) A popular bitmapped graphics file format developed by CompuServe. Pronounced "giff" with a hard "g" or "jiff" (take your pick), GIF images are widely used on the Web because the format uses its own form of compression.

GIF supports 8-bit color (256 colors), but gets the most mileage out of its limited colors by using a built-in color palette. For example, the palette for an image of a forest would mostly contain shades of green and brown. If colors are within a tight range, this method provides extraordinary realism in an 8-bit image. See indexed color.

GIF87a and GIF89a
The original GIF87a and subsequent GIF89a are named after their year of introduction. GIF89a allows one of the colors to be transparent and reflect the background color of the underlying page or window (see alpha channel). GIF89a also supports animation by rendering multiple frames in sequence (see animated GIF).

GIFs and JPEGs
Both GIF and JPEG images are widely used on the Web and are supported by all Web software. Charts, screen shots and technical drawings are typically GIFs, because GIFs uses lossless compression, and the text is maintained properly. Photos are generally better rendered as JPEGs, which support 24-bit color and can be highly compressed (see JPEG). See GIF patents, lossless compression, graphics formats and PNG.


More Shades Than Apparent
At first glance, it looks like the Android robot logo is only green, white and black. Zooming into one of its antennas shows more shades (see dithering).







Even More Colors
The GIF format picks the 256 most used colors in an image. Notice how the colors in the palettes match the two images.
References in periodicals archive ?
Once the infected system locates the C2, it receives encrypted backdoors that are obfuscated within GIF files and disguised as pictures that appear on a victim's machine.
These include (for example) exporting animated GIF files, creating 3D objects, using slider controls, and building an image slideshow.
The virus, as an addition to DOC and TXT file formats, is able to attach GIF files as well.
The slide sets can be downloaded as Powerpoint, WMF, or GIF files.
Image Explorer Pro can create animated GIF files, edit your videos and add 3D text and shapes to your pictures.
A compression format developed by CompuServe using Unisys's patented LZW (Lempel-Ziv-Welch) technique, GIF files are bitmaps composed of individual pixels.
This version includes the Web Design Effects software from Intel Corp's architecture labs, which will enable developers to include animations without downloading GIF files, according to the company.
The upgrades to iCIMS Social Distribution provide additional employment branding capabilities that allow for more dynamic content such as custom messaging, high-resolution images, and GIF files that better showcase an organization and its culture - now available on a per saved job search basis.
Certain effects are available at the left side of the camera but two of them are paid in-app features called animation effect to create GIF files.
You can even use animated GIF files to enhance your page design, or as background images.
In addition to the reports, the InfoDisk Pro Plus CD-ROM also contains many other business building tools including over $400 worth of free software, Internet tools, animated GIF files, HTML pages and camera-ready marketing materials.
The explosion of multimedia features - real audio, shockwave, downloadable video clips, animated GIF files - on the graphic-intensive World Wide Web is responsible not only for the numerous traffic jams plaguing the superhighway this year but also for the rapid ascendancy of the Internet itself.