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> Does anybody know an HTML resource, paper, article or similar where I can see how the different HTML tags affects to page load time?
Two things that would be notable:
1. some of them don't affect "load" time but *do* affect display
time. E.g. closing tables early so NS can finish its heuristics.
2. Over-optimizing your site for a browser, or any code generators
which create a lot of excess code, WILL affect load time since
they bloat the total download size of the page.
3. A page's load time should be calculated as if it is the first
visit and not cached:
add up the html itself
any externally added EMBEDs or SCRIPT references
Cascading Style Sheets if you use them
all frames that make up one displayed page
all external IMG or FIG references
that should get you a measure of bytes or K. Recall that a
"56k" modem means at best signal, so assume that you need less,
if you are aiming for Joe Websurfer, since outside of deeply
urban areas, high quality phone lines are rare. Anyways now
calculate how many seconds your document will take to load
"from scratch". Add estimated database call time if anything
is dynamically generated.
If this is beyond 3 seconds, expect an "abandon rate" of people
who find the site two slow to use. This is hard to measure unless
it is so horrid that it generates flames to your customer service
and webmasters. However if you get such a flame assume that they
are not alone, merely the first to be vocal about it.
You can sometimes be forgiven your front page, but, you really
have to have them get *something* that indicates they are at
least starting to get the page to load - and of course the
result has to be worth it.
I really enjoy pointing at "This page optimized for - arguing with customers -"
http://www.htmlhelp.com/feature/art2.htm
...but you should look at the "Web Page Sizes" section of "How do they do that
with HTML?"
http://www.tashian.com/htmlguide/sizes.html
Good luck :D
-* Heather Stern * Starshine Technical Services * star@starshine.org *-
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