A specific example of what I'm trying to do is to minimise the file size of the linked image (360KB) whilst keeping the quality as high as possible. Ideally, I'd like to retain the image size of 980 x 825 pixels.
If you just want to view pictures on the screen and not print them, there is no point in going above 300 dots per inch (dpi).If you have picture software you can choose the size - say 7" x 5" at 72 dpi and you will find that is about 548 X 411 pixels. Yours could be bigger. If you want to print, it is best at about 300 dpi (cant see the difference on screen) the 7" x 5" would be about 2285 x 1712 pixels.
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