Originally posted by Availor:
You got me confuesd: DPI = Dots Per Inch right? So as the Dots are smaller the image is better. Though it does not matter for the web, unless your picture must be perfectly accurate so you can make a big size of it, am I right?

For printing matter the dots should be more densed for better quality disregarding the actual size (width & height) of the image.
For printing, a higher DPI is better as it will produce a better quality print. Like you say, smaller dots = better image. For the web, however, a higher DPI means the image will take longer to load in the browser and will use more bandwidth. Something you don't want if you have to pay for your hosting.

So... if I work on the web, why dpi does not matter? If I have a 1x1 inch square with 1000 dots in it, compared to the same square with 10,000 dots in it? It does not make any sense to me.

Logic says: In the same size (width & height): MORE dots = BETTER quality = MORE space... http://www.talkgraphics.com/images/smilies/confused.gif
DPI (PPI to be more accurate as we're talking pixels rather than dots when it comes to the screen), does matter for the web. As I said before, a higher PPI will result in the image taking longer to load and use more bandwidth.

For example, an 800x600 image at 72ppi will appear the same size on the screen as an 800x600 image at 96ppi, 200ppi or 300ppi. The difference will be the time it takes for the browser to download these images from the server they're held on. If you're concerned that a 72ppi won't be good enough quality wise, check out the wallpapers on my site. http://www.talkgraphics.com/images/smilies/smile.gif