Re: [Gimp-user] Why does saves as JPG default to quality 85?

[Keith Purtell <kpurtell imirus com>]

I suppose the reason I didn't go the preview route is that I'm a bit annoyed that GIMP doesn't remember that I've changed that setting to 75 every single time I've made a JPG. Now that you suggest it, I could run a test and see if GIMP's apparent 85 default really does/doesn't make a significant difference in file size compared to the number I prefer. If the two yield similar results, I can just accept the fact that GIMP won't adapt to a user's work pattern (grrrr, don't like that idea) and let it save all JPG files at 85.

   

Keith 

(PS Cool sig)

On Fri, Mar 23, 2012 at 4:34 PM, Johnny Rosenberg <gurus knugum gmail com> wrote:

Why not just look at the preview yourself and make your own opinion?

My experience is that at high numbers (maybe 90 and above, depends on
the image), every little change means a big change in file size but a
little visible change in the image. On the other hand, at low numbers,
say 50 or lower, this also depends on the image, every little change
means a big change in image quality but only a little change in file
size. Just fiddle with the numbers yourself, looking at the preview at
a reasonable zoom level, and you will get close to the optimal
compromise between file size and image quality.


Kind regards

Johnny Rosenberg
ジョニー・ローゼンバーグ