Thursday 22 January 2009

PNG (Portable Network Graphics)

  • The PNG format was created to improve upon and replace GIF (Graphics Interchange Format) which was limited to 256 Colours.
  • An image format embodying lossless data compression (known as deflate).
  • PNG offers a variety of transparency options; most notably allowing the addition of an alpha channel thus greatly improving transparency quality with no need for matting.
  • Improved transparency allows improved layering and visual effects in web design.
  • Greater colour depth gives greater precision and clarity and improves the quality of fades.
  • PNG has better image clarity than JPEG when used for text or images with sharp transitions.

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