Don’t call me DOM

4 February 2005

GRDDL Test Suite

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I’ve announced recently the first release of a GRDDL Test Suite, whose goal is to allow to evaluate GRDDL implementations with regard to the specification.

The test suite is composed of

  • a series of input/expected output documents – for the time being, only XHTML input has been integrated in the test suite
  • an RDF list of these test cases, binding input and output documents, and defining the purpose of the test case – much as described in the QA Wiki on test metadata; the RDF vocabulary I’m using to that end is the one that was developed for the RDF Core test suite, mainly because it existed already – I’m not sure yet if this will prove to be benefitial in the end in terms of tools

15 December 2004

Pass HTML Validation, Collect 1M$

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I was recently pointed to another example of important bandwidth saving due to using proper XHTML and CSS. Nothing very new, but the figure of 1M$ is pretty interesting.

The standout paper was by Brett Jackson from Fairfax Digital, detailing how they moved to validated XHTML with CSS. They deliver 164,000,000 page impressions per month for the major dailies The Sydney Morning Herald and The Age. They do day parting: different kinds of stories are emphasized at different times of day. Later in the day people want gossip, analysis and entertainment but in the morning they want breaking news and weather. He reported they save a million dollars a year on bandwidth costs by moving to validated XHTML with CSS! […]

13 December 2004

Valid Markup saves battery life

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T-Mobile in their position paper to the Mobile Web Initiative Workshop note that

The very fact that advanced browsers allow greater mark-up flexibility unfortunately reduced the amount of care taken to assure standards compliance and led to a broader use of sloppy mark-up – but unlike to desktop browsing this has quite severe consequences for users of devices with radically limited resources: rendering non-deterministic mark-up has a very real impact on CPU, memory and battery life, and also mostly leads to unwanted and costly data overhead on the radio transmission – for customers and operators all alike.

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Picture of Dominique Hazael-MassieuxDominique Hazaël-Massieux ( is part of the World Wide Web Consortium (W3C) Staff; his interests cover a number of Web technologies, as well as the usage of open source software in a distributed work environment.