The limit is 1,000 kb or one meg... Your photos were below 100 kb (well, below the limit) - as long as it's below, you don't have to re-size. I normally try to crop photos to show only what I need, (maybe adjust the colors or shadows) then resize to 800x600 and when I save, I compress the file to 40-50% - to create the smallest file I can. It's just a habit I've gotten into.
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