> What's the matter with newer GraphicConverter versions like 2.6?
> A JPEG file shows File Length 38,6KB in Information window, but saved on
> disk it occupies 98KB or (86 504 bytes used). Older version (like 2.3.1)
> produced much smaller file sizes in line with the file length...
Probably you're saving at a higher quality setting than the original
file was saved at.
Before you say "no I'm not": I believe that recent versions of GC can
use either the IJG JPEG code or Apple's JPEG code (which is part of
QuickTime). That wouldn't make much difference, except that Apple
uses a quality scale that's completely unrelated to the IJG scale.
Q 50 on Apple's scale is about like Q 80 on the IJG scale. So check
your GC preferences, and select the IJG encoder if you want to get
the same filesize-vs-quality-setting results you got before.
BTW, editing and resaving a JPEG is not something to do lightly ...
you lose a little quality each time around.
regards, tom lane
organizer, Independent JPEG Group