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» Home » Graphics Web
& Monitor Resolution Resolution refers to how well an image is "rendered"— in this case on-screen. High-resolution images are needed in professionally published materials but are not necesary for Web pages or for on-screen presentations.The norm for on-screen viewing is 72dpi. Any more resolution than that is wasted. I say that it's wasted because an image at 72dpi will appear just as clearly and as smoothly as one that is 720dpi. The images will look the same but the one that is 720 dpi will have a much bigger file size. This bigger file size will take longer to download on the web and will significantly slow down the performance of a presentation program like PowerPoint. The presentation document will also balloon in size proportionately. Images used purely on-screen should be in the RGB
color mode or index color which
is a based on RGB. Both Web pages an on-screen presentations are seen
on monitors which use red, green and blue (RGB) pixels to display color
on-screen so, images saved in an RGB color mode will naturally look better.
 Some
Links You May Find Useful
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one is going to use images for a Web page or an on-screen presentation,
it's important to understand what is not necessesary for the image's best
appearence. Sometimes, people make the mistake of putting image files,
of the same resolution that they use in printed materials, on the Web
or in presentations. As a result, the images take a long time to download
from the Web and 
