Here is a sample of a clip art image downloaded from the Clipart.com
image archive. In this case, the original resolution was ten times what you see here, though I would say that this is a more common resolution.
Quality runs from absolutely outstanding, to poor, but for the most part, the quality of the clip art images is very high.
Image © Clipart.com
Clip art images are often available in GIF, WMF, JPEG, and EPS formats. Often you will have a choice. Searching is a breeze, but you may also
browse for images. You can add images to your shopping cart and download all at once, or download the images one at a time.