Re: GIFs vs JPEGs

Sharon,

When I gave my "3 situations", I was talking in generic terms, not in
very specific terms. So, I'm not going to judge your decision about
using GIF/JPEG but talk a wee more in the same "generic terms".

One of the best uses of GIF is transparency cuz of its GIF89a format.
It is normally a good idea to have your images GIF in case your
background is not a solid colour. Otherwise, it does not matter if
your image has transparency or not if the base colour of your image is
the same as the base colour - like your white-on-white example.

Secondly, there is white and there is "off-white" (reminds me of a
toothpaste ad! [grin]). So, if you see those "grains" in your images
on lower resolution (256 colour), it means that what you have is not
"perfect white" or RGB(255,255,255). The best way to do in this case
would be to select this "white" region and fill it with "white" and
then save again. This should solve it.

[abhay]


----- Original Message -----
From: Sharon Elix <saelix1970(at)netscape.net>
Subject: GIFs vs JPEGs


> Abhay
>
> Quite a few posts ago, you listed the three occasions only, you
> would choose GIF over JPEG. I'm wondering if a fourth situation
> is possible.
>
> For a site I'm working on (which unfortunately is currently only
> on the internal development server), I have a background vertical
> JPEG. It consists of a coloured block at the top followed by a
> pure white column. On top of this, I've placed a photographic
> image with a 3D effect. Not sure of the effect of placing a JPEG
> image with a white border on top of a background white JPEG, I
> converted the photographic image to a GIF with a transparent
> background (thanks to my newly acquired knowledge of the joys of
> transparency with Photoshop).
>
> Putting a white bordered JPEG, on top of a white background JPEG,
> looks fine on my system. However, the white background JPEG
> appears spotty on older systems/browsers, I believe due to
> support of a smaller range of colours. Anyway, I thought the GIF
> option was best. Let me know if this is not the case and there
> really are only three occasions when one should use GIF... ;-)

HTML: hwg-basics mailing list archives, maintained by Webmasters @ IWA