saving a image in adobe ill
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- monNom0
gif is a lossless compression, Jpeg is lossy...
what this means is that when you compress something with a lossy compression scheme (like JPEG), you lose image clarity.(hence .jpg artifacts[ those little dirty looking squares at high contrast areas])
when you compress something with a lossless compression, (like .gif) you don't lose anything
becasue it essentially counts up rows of similar pixels and reads it as one pixel. (but gif is only 256 colours[8-bit] so really you're not losing image quality from a 8 bit image, but you would from a 24bit image.)Jpeg is good for photos, gradients, retty much anything thats got a lot of different colours all flowing together, grifs are good for high contrast images or images with large feilds of colour (most logos, text, icons, etc.)
you'll have to experiment to get a feel for how both work, and which they work better for.
saving out of illusrator should probably be .gif unless you've got raster images embeded in your document.
hope you understood at least some of that