Image format

  • Image file formats are organizing and storing digital images.
  • An image file format may store data in uncompressed, compressed, or vector formats.
The five most common image formats for the web and computer graphics: JPEG, GIF, BMP, TIFF and PNG.




JPEG(Joint Photographic Experts Group)

  • JPEG files are very ‘lossy’, meaning so much information is lost from the original image.
  • It keep the image file size small means some degree of quality is also lost.

GIF(Graphics Interchange Format)

  • Can support transparency
  • 'Lossless’ quality–they contain the same amount of quality as the original, except of course it now only has 256 colors.


BMP(BitMap)

  • The images are rich in color, high in quality, simple and compatible in all Windows OS and programs. 
  • When making a BMP image larger or smaller, first make the individual pixels larger, and thus making the shapes look fuzzy and jagged.




TIFF

  • TIFF was created by Aldus for ‘desktop publishing’
  • Very large file size–long transfer time, huge disk space consumption, and slow loading time.
  • High quality image format, all color and data information are stored


PNG(Portable Network Graphics)


  • Supports transparency better than GIF
  • Not good for large images because they tend to generate a very large file, sometimes creating larger files than JPEG.
  • All web browsers can't support PNG.

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