This image is all over the internet as a PNG file and is 654KB in size. I loaded it up into Jasc Paint Shop Pro v9.0 and saved it has a JPG, and in the options I set it at compression factor of 1 (lowest compression and best quality). Under Run Optimizer I set the compression value to 30. My saved JPG file is 35.6KB in size. That is 1/20th the size.
Of course I am not the only person that is doing this.
Anyway, I liked this picture because it reminds me of all the fruits I put into my shakes.
Apple Orange Lemon Lime Pear: