2. Types of Graphic Files
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Graphic Interchange Format (GIF)
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Joint Photographic Experts Group (JPEG)
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Portable Networks Graphics (PNG)
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Tagged Image File Format (TIFF)
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Raster Graphics
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Vector Graphics
3. Graphic Interchange Format (GIF)
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A bitmap image format developed by CompuServe
in 1987
Supports 8 bits per pixel, allowing reference to its
256 color palette
Unsuitable for reproducing photographs or other
complex images
Well suited for simple graphics such as logos
4. Joint Photographic Experts Group
(JPEG)
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Commonly used method of lossy compression for
digital photography
Can reduce file sizes up to more than 80% of the
original size.
Some of the image's quality is lost when it is
compressed
Used to make the file smaller without making the
image unrecognizable.
5. Portable Network Graphics (PNG)
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A raster graphics file format that supports lossless
(nothing is lost) data compression
A replacement for Graphics Interchange Format
(GIF)
Designed for transference of images over the
Internet
Supports:
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Palette based images
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Grayscale images
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Full color nor-palette based images
6. Tagged Image File Format (TIFF)
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Format for storing raster graphic images
Popular with graphic artists, publishing industry,
and photographers (both amateur and professional)
Created by Aldus for use in desktop publishing
Supported by image-manipulation apps, publishing
and page layout apps, scanning, faxing, and word
processing, optical character recognition and many
other apps.
7. Raster Graphics vs. Vector Graphics
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Raster Graphics: dot matrix data structure
representing a grid of pixels viewed on a monitor,
paper, or another display device.
Vector Graphics: uses lines, curves, and shapes (or
polygons) in order to display/depict images in
computer graphics.
Difference: Raster uses dots to compose and image,
while vector uses lines, curves, and shapes.
