Re: Question on Large Image

by "jim barchuk" <jbarchuk(at)worldnet.att.net>

 Date:  Tue, 16 Dec 1997 00:50:08 -0500
 To:  hwg-graphics(at)hwg.org
 In-Reply-To:  hotmail
  todo: View Thread, Original
Hello Collin!

> I'm doulbtful whether this is the proper list to post my question. 
> Since I'm feeling brave today, here it goes...

Can't see how an image question could be off topic for -graphics. :)

> I'm working on a site that requires almost all the contents be on a
> single image.  As you can imagine, the file size will be quite
> large.  I understand that this approach is not recommended, but
> since this is my client's will, I'll try my best to accommodate.
> 
> Here's the question, can someone tell me if it will reduce loading
> time if I parse the image into several images and put them together
> using the <table> tag?  Or should I just leave it alone?

Table won't necessarily help or hurt without more detail, but 
consider:

A large GIF in 4 or 16 colors could be small enough. GIF compresses 
using the -horizontal- dimension. Imagine two images (no pun 
intended [G]), the same size, two colors. One has a lot of vertical 
lines, lots of short segments of color when considered in the 
horizontal dimension. The second has lots of horizontal lines. It has 
fewer but larger segments in the horizontal dimension. The first 
image will be much larger than the second. 

JPG done with appropriate compression can be pretty small too. I've 
seen very acceptable full screen (640x480) images that rolled in at 
under 40k.

So, YMMV, depends on what 'kind' of image you need to put up and 
exactly how you build it.

Have a :) day!

jim barchuk
mailto:jb(at)jbarchuk.com
http://www.jbarchuk.com

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