Still working with graphics and videos for the web. Here're a couple of versions of a JPG file that was 640 X 480. I used Adobe PhotoDeluxe to resize the pictures to 320 X 240 and varied the Image Option or "picture quality" for each export to JPG from PhotoDeluxe.
Can't seem to post the second graphic. I'll have to check, I may be at my limit (10 MB) on the blogspot server.
Another good reason for being judicious with file sizes.