JPEG is absolutely the wrong compression algorithm for what amounts
to a line-art image. For non-photographic scenes, there will be
heavy
artifacting around all lines and other sharp color transitions, which
usually obliterate the compression ratio and in many cases make the
file even larger.
Not that anyone asked, but I would strongly recommend PNG.
Hmm. I didn't intend for that to come across as being so snotty.
Just trying to help.
It didn't (at least to me) come across badly. I too about puked at
the "use email for a bug tracker" suggestion. Of course I've known
you long enough on various lists to listen, you usually have good
things to say!