The Web should be made accessible to as many people as possible, regardless of any disabilities they might have.
Joe Clark takes a look at the accessibility (or rather the lack of it) of the Vancouver 2010 Winter Olympics websites.
ATAG addresses software that is used to create websites or manage the content of websites, but is unfortunately ignored by many creators of such software.
Make sure the alt text most browsers display when an image cannot be rendered is readable. If necessary, specify a text colour for images.
If you use the CSS that comes with sIFR, Apple’s VoiceOver screen reader will not read the replaced text. But there is a simple fix.
How browsers display alt text for missing images varies, so it would be nice to see this standardised by specifying the recommended behaviour in HTML 5.
By contacting organisations with inaccessible websites about the problems you encounter, you increase the chances of them fixing their sites. W3C’s WAI has created a document intended to help you do this.
The W3C HTML Accessibility Task Force will help ensure that HTML 5 provides features to enable Web content to be accessible to people with disabilities.
Many dropdown/flyout/DHTML menus are not keyboard friendly. Next time you implement a dropdown menu, make sure it can be used without a mouse.
The heuristics used by the JAWS screen reader to determine whether a table is used for layout or data are quite strange.
Whenever you place text on top of a background image, check if the text is readable if the image is missing and specify a background colour if necessary.
Looking for input from screen reader users with regards to the usefulness of the summary attribute for data tables and the information provided in it.
There appears to be no single solution to heading structure in HTML that fits all situations, but as I see it there are two choices.
The new W3C website has a new and very good summary of the why, what, and how of Web accessibility.
The results from WebAIM’s October 2009 screen reader user survey have been posted. Some results are expected while others can be a bit surprising.
When creating data tables in HTML, make sure to mark up the table structure properly, using the relevant elements and attributes available in HTML.
We are Colorblind contains good and bad examples of designing for people who are colourblind along with design patterns, tips and tricks, and colour checking tools.
All Lightbox clones that I have tested have issues with keyboard accessibility, making it unnecessarily difficult or confusing to use them without a mouse.
Completely removing the outline from links makes it very difficult for people who do not use a mouse to see where the keyboard focus is. But there is a better way.
Many web designers and developers forget about or ignore keyboard-only users when building web sites. Here is some advice on what to avoid and what to do.