When is gif format used

GIF images are compressed using the Lempel-Ziv-Welch LZW lossless data compression technique to reduce the file size without degrading the visual quality [ 2 ]. This technique belongs to a group of dictionary compression Skip to main content Skip to table of contents. This service is more advanced with JavaScript available. Best External Hard Drives. Browse All News Articles. Smart TVs Ads. Team Comes to Workplace by Meta. Block People Spotify. Verizon Selling PS5. Windows 11 SE Explained.

Windows 11 SE. Microsoft Default Browser Firefox. Google's New Pet Art. Robinhood Hack Find Downloaded Files on an iPhone. Use Your iPhone as a Webcam. Hide Private Photos on iPhone. Take Screenshot by Tapping Back of iPhone.

Should You Upgrade to Windows 11? Browse All Windows Articles. Copy and Paste Between Android and Windows. Protect Windows 10 From Internet Explorer. Currently, two versions of GIF: 87a and 89a are available. In this file format, the characteristics of the blocks and pixel dimensions are mentioned in a fixed-length Logical Screen Descriptor.

The existence and size of a Global Colour Table may be specified by the screen descriptor, which tracks further details if present. A typical GIF87a file layout is as follow:. The Header holds six bytes and is used to specify the type of file as GIF.

Though the Logical Screen Descriptor is separated from actual header yet sometimes it is considered as the second header. Same structure which is used to store the header may store the Logical Screen Descriptor. The version is also three bytes in size and declares the version of the GIF file. Dictionary Dictionary Term of the Day. Natural Language Processing. Techopedia Terms. Connect with us.

Sign up. Term of the Day. Best of Techopedia weekly.