On Wed, 2008-08-13 at 10:07 -0500, Bob Friesenhahn wrote:
> It seems that many of the images are in PNG format. Given this, it is
> worth investigating to see if these PNG files may be optimized for
> smaller size using 'pngcrush' or a similar tool. I picked a file at
> random from the themes provided with Solaris 10 and found that
> 'pngcrush' was able to optimize it to a smaller size, indicating that
> these images are not yet optimized for size.
>
> PNG is a very flexible format offering many ways to store the same
> image.
>
> Wasted space by the filesystem when storing tiny files may hinder
> optimization efforts.
I've tried this. Built pngcrush (now available in SFE) and
recompressed all pngs with the -brute option. The total
saving for /usr/share/icons was
852k (49884 -> 49032).
There's more space to be saved with the larger pixmaps like
background images (/usr/share/gnome/pixmaps/backgrounds/*)
312k (5372 -> 5060)
and the rest of the theme images (/usr/share/themes/*)
32k (3488 -> 3456)
So that's 1196k saved on SUNWgnome-themes.
Not sure how of this saving is left after the compression
during the CD image build, though.
Thanks for the suggestion!
Laca
