Technical

Articles for digital accessibility professionals exploring web development issues, techniques, design patterns, auditing, WCAG, and resources of a technical nature.

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  • W3C Validator for MAC OSX with Experimental WAI-ARIA Support

    Chuck Houpt, developer of the Validator SAC (standalone version of the W3C validation service) for MAC OSX, has kindly added the (X)HTML DTD’s I developed (hacked) to his application. This…

  • How Can I Validate (X)HTML + ARIA?

    An issue with the use of WAI-ARIA in HTML documents is that they don’t validate. When you run a HTML document containing ARIA attributes through the W3C Validator it shows…

  • Color Contrast Analyzer 2.2 – updated contrast ratio

    The English version of the Color Contrast Analyzer and the German, French, Czech, and Italian versions for Windows have been updated, MACÂ version all languages updated, to reflect the change…

  • Testing ARIA User Input control’s navigation support.

    Assistive technology such as screen readers provide keyboard short cuts for navigating the content of web pages. For user input controls such as radio buttons and edit boxes the user…

  • Testing WAI-ARIA Role Support

    For WAI-ARIA to be useful, to people with disabilities who use assistive technology, access to the information that ARIA roles and properties provides must be well supported across a range…

  • Contrast Analyser, Version 2.1

    The  Colour Contrast Analyser has been updated to reflect changes in WCAG 2.0 Some important clarifications are now included:

  • Free ARIA

    Aaron Leventhal has set up a new group for people who want to help provide free tools and resources for the advancement of WAI-ARIA.

  • Google Chrome Accessibility

    Refer to Google Chrome accessibility update (07/12) Google have launched their new browser, I like many other people have been very keen to install and use it. My first impression…

  • The Helen Project – More Social Accessibility

    The Helen Project is an initiative by the American Foundation the Blind to provide all internet users, especially people with disabilities, the opportunity to register publically available feedback on the…

  • JAWS version 10 with WAI-ARIA live region support!

    I for one have been waiting to hear this news. One of the big 2 commercial screen readers will now support WAI-ARIA live regions. Let’s hope that this prompts GWMicro…

  • Hands-On Accessible Rich Internet Applications (ARIA) @ SXSW Interactive 2009

    Martin Kliehm has proposed a panel for South by Southwest (SXSW) held March 13-17, 2009 in Austin, Texas. : ‘Hands-On Accessible Rich Internet Applications (ARIA)’ .

  • Do WAI-ARIA – Google Is!

    There a bunch of interesting posts on Marco’s blog about WAI-ARIA: The first one ARIA in Gmail #1: Alerts is about the use of the WAI-ARIA role=”alert” and its use…

  • A Brave New alt in {HTML5}

    Update 08/08/09 What the King of HTML5 giveth, he taketh away. The use of { } is now HTML5 history. You can wonder at the greatness of his latest proclamations…

  • Introduction to WAI ARIA – Gez Lemon

    Gez Lemon from TPGi has written an article for Dev.Opera, which provides an Introduction to WAI ARIA.

  • Social Accessibility – Threes a Crowd?

    I started to write a post about the new social accessibility tools/services that have been announced in the last week or so: IBM Social Accessibility Project and Webvisum.

  • Circumventing Hegemony in the HTML WG

    Raising Issues In order to raise an issue or proposal in regards to the HTML5 specification you do not have to be a member of the W3C HTML Working Group…

  • ARIA Slider, Part 3

    After covering a basic ARIA slider as well as a more complex slider component, we will take a closer look at how a slider can be used to create a…

  • ARIA Slider, Part 2

    In my previous post I gave an example for a very minimalistic ARIA slider, with the intention of demonstrating how simple it is to add ARIA using only a few attributes. I know there are some developers out there who wishfully think that, in order to make their rich interface widgets accessible, all they have to do is add ARIA to it. Others are skeptical about ARIA for that very reason. The truth is of course that ARIA is only part of the effort, and work is required to make any widget accessible (whether you’re using ARIA or not). In this post I want to cover some of those issues and give an overview of what else to think about when creating an accessible slider.