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Discussion : Filename Extension and Intended Purpose

Over the years many graphics formats have been invented for storing images on computers.

  1. Listed the most common formats
  2. Identify their purpose

ANSWER:

  • GIF: stands for Graphic Interchange Format. Commonly used for bitmap images composed of line drawings or blocks of a few distinct colors. GIF89a file formats, supports transparency, it allows to make a color in an image transparent.
  • JPEG: stands for Joint Photographic Experts Group. It stores all of the color information in an RGB image. It is designed so that the changes made to the original image during conversion to JPEG will be invisible to the human eyes.
  • BMP: stands for  Bitmap. It is used for bitmap graphics in the Windows platform only. Other than that, it stores images data from bottom to top and pixels in blue/green/red order.
  • TIFF: stands for Tag interchange File Format. It is used for exchanging bitmap images between application programs, including those used for scanner images. Commonly used in desktop publishing faxing, 3-D applications, and medical imaging applications.
  • PNG: stands for Portable Network Graphic. PNG offers greater color support and better compression, gamma correction for brightness control across platforms, better support for transparency, and a better method for displaying progressive images.

Resources: http://www.reasoft.com/tutorials/formats/formats_1.html

                     http://whatis.techtarget.com/definition/TIFF-Tag-Image-File-Format

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