Re: wherefore CGM?
Inigo Lopez (ilopez@fundesco.es)
Mon, 09 Dec 1996 14:30:22 +0100
To: www-html@w3.org
Subject: Re: wherefore CGM?
In-reply-to: <199612080335.TAA09955@iberia.it.earthlink.net>
Date: Mon, 09 Dec 1996 14:30:22 +0100
Message-ID: <3310.850138222@indy.fundesco.es>
From: Inigo Lopez <ilopez@fundesco.es>
En fecha/On Sat, 7 Dec 1996 19:31:51 -0800 "David Perrell" expuso/wrote:=
> > Think web! The _user agent_ knows all it needs to know. What the
> > display is and what the graphics format is.
> =
> Does the user agent know the pixel density the image was created for?
> That would be the best basis for determining whether or not to resize.
> PNG doesn't appear to have chunks for this info, and I don't think it's=
> in GIF or JPEG either. =
Yes, the user agent should know the pixel density of the image.
PNG *does* have a chunk named pHYs where you specify the image physical =
dimensions. Of course JPEG also stores information about density. I don't=
know =
about GIF, but I hate it anyway and its days are over.
All images should have density information. The web browser should know t=
he =
density of the intended display device (monitor, printer, etc.) and optim=
ize =
the image for output at that density. This is the way to go, no comment.
I=F1igo L=F3pez