Re: [libreoffice-marketing] branding colors - missmatch

Hi Tom, Johannes, Thomas, Christoph, all,

On Mon, Jan 17, 2011 at 11:09 PM, Tom Davies <tomdavies04@yahoo.co.uk> wrote:
> Jpg does horrible things to pictures especially when not pushing pictures up to
> top-quality when saving.  All those horrible swirls and ripples around corners
> remind me of a boat cutting through water.  Surely gif is a better format if you
> want something lighter than png?  Hmm, i am not sure about colour-matching tho!

PNG is usually produces smaller file sizes than GIF (when saved in the
correct bit depth of course). PNGOUT and/or PNGCRUSH can be used
reduce the file size further in many cases.
There is a special setting in PNG that can prevent the gamma
information being included (see
http://f6design.com/journal/2006/12/01/fixing-png-gamma/ for more info
including a Windows program that does this) and thus allows color
consistency to be achieved among modern browsers.
JPEG can alter colors too depending on the compression (and software),
so don't always expect exact results when comparing the color value of
a lossless image and a JPEG.

Regards,
Ivan.

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