W3C home > Mailing lists > Public > public-bpwg-comments@w3.org > October to December 2006

Re: Default Delivery Context - Maximum Total Page Weight

From: Justin Thorp <juth@loc.gov>
Date: Mon, 23 Oct 2006 09:17:30 -0400
Message-Id: <s53c9689.051@loc.gov>
To: <chaals@opera.com>,<public-bpwg-comments@w3.org>

Thanks Chaals!

How did the group come up with the numbers for its current Default Delivery Context?  

Was there research done or was it based on group members past experiences?

Is there a central repository that the group used with information on phones, their capabilities, and limitations?  If so, is it publicly accessible?

Justin Thorp

PS - I really appreciate all the work of the Mobile Web Best Practices Working Group.  Keep up the good work!!!

Justin Thorp
Web Services - Office of Strategic Initiatives
Library of Congress
e - juth@loc.gov
p - 202/707-9541

>>> "Charles McCathieNevile" <chaals@opera.com> 10/22/06 1:45 PM >>>
Hi Justin,

On Fri, 20 Oct 2006 17:12:32 +0200, Justin Thorp <juth@loc.gov> wrote:

> For the Default Delivery Context [1], does the Maximum Total Page Weight  
> of 20kb just mean the HTML or does that include the HTML and everything
> on the page?

The HTML and everything else, according to recent group discussion and  

> If it is for everything on the page, with the variety of Web content out  
> there (e.g. video and images galleries), how reasonable is it for people
> to obtain the 20k limit?

Well, if you are trying to make stuff that you can send to an unknown  
mobile phone, there are fairly strict limits about what it can handle. (We  
have moved forward - the first phone I used for browsing the web, in 1999,  
could handle about 5k I think.

Not all content meets Mobile Web Best Practices - which is not to say the  
content is evil or bad, just that it is not something you should expect to  
work well on most mobile browsers.

One issue is that there are many phones and other small devices out there  
which are much more powerful than the Default Delivery Context. On the  
other hand, there are quite a lot of deployed WAP-only browsers that are  
not even that good, and people make a lot of money adapting pages to  
deliver to them. You can of course pay the money to the experts, who will  
take almost anything and find a way of serving some form of it to a phone.  
If you're trying to do it yourself, the Best Practices are a guide to,  
well, best practices for making stuff that will work. (Note that they also  
encourage you take adapt your content where possible and relevant...)


Chaals (not speaking on behalf of the group, just a member of it)

   Charles McCathieNevile, Opera Software: Standards Group
   hablo espa˝ol  -  je parle franšais  -  jeg lŠrer norsk
chaals@opera.com          Try Opera 9 now! http://opera.com
Received on Monday, 23 October 2006 13:17:49 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 20:01:50 UTC