In article <tomstiller-7AE1FE.08020329072008@news.verizon.net>, Tom Stiller <tomstiller@yahoo.com> wrote:
> > One thing I didn't think of checking and that is if it is possible to have > > the Cmd-Shift-4 snapshot produce a jpg instead of a png. I didn't see > > anything in the list of keyboard shortcuts. > > It is possible, but not on a per snapshot basis; it's an application > wide specification set in the .plist file.
png is not a bad default but I guess it depends on the sort of thing you tend to screenshot. Here is some indication that png is more file size efficient for many screenshot purposes.
<http://dorayme.890m.com/alt/imgFormats.html>
I think it a good format and springboard for whatever else you might want. Only in very limited cases is a gif smaller in my experience.