ARIA is Accessible Rich Internet Applications, a set of standards under development by the W3C. It’s part of the WAI (Web Accessibility Initiative). ARIA provides ways to describe roles supported by content. Roles include such things as “menu,” “treeitem,” “slider,” and “progressmeter,” Roles can also describe structure, with roles like “article,” “heading,” “complementary,” and “rowheader.” [...]
10 Common Accessibility Problems from Dingo Access is a well explained list of common failures. For each problem, the solution is provided. The list is derived from WCAG 2.0 recommendations. Bill Gates: In Five Years the Best Education Will Come from the Web. What do you think about this? I haven’t had a bit of [...]
There was some discussion about HTML5 document outline in the comments to my recent post HTML5: the new hgroup element. I thought the topic deserved a post of its own. We’re all familiar with the DOM, that treelike structure that outlines the contents of an HTML document. Here’s a snippet of a DOM tree as [...]
The W3C has a new validator at validator.w3.org/unicorn they are calling a “unified” validator. Unified because it checks HTML (including HTML5), CSS, and RSS feeds. The validator at validator.nu also checks HTML5, and can be set to check for ARIA roles as well. Introduction to Keyboard Maestro from ATMac has a discount offer good through [...]
It’s been on my mind lately to try to find out how well a screen reader will navigate a page of HTML5. I’m particularly wondering about how hierarchy would make sense if there were to be a series of articles on a page, all with an h1 in a header element. HTML5, ARIA Roles, and [...]
I’m doing a training session for Knowbility today. It’s a session on accessible HTML, training some trainers who work on various state of Texas sites. The people I’ll work with will be the ones who scatter through state agencies and make sure the people they train know how to write accessible HTML. I can’t release [...]
Tech tips, geeky how-tos, thoughtful analysis of issues, news about the latest gadgets, ideas for improving your blog—you’ll find it all in these 10 terrific tech and science blogs. They just happen to be written by women. I. Hacker Chick The Hacker Chick Blog is a beautiful starting point. I say beautiful because the graphics [...]
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Color contrast is a major accessibility issue on a web page. The greater the amount of contrast, the better the readability is for a page. The most contrast you can get is black text on a white background. Things go downhill from there. The degree of readability loss with colors other than black and white [...]
Two simple steps that improve the accessibility of data tables are use table headers appropriately use the scope attribute with table headers The table header tag is <th>. You can assign a <th> element to the any column or row in a table where appropriate. Any row or column with a <th> can be given [...]
Users with screen reader devices will scan and skim your web page in a manner somewhat similar to the way a visual user will. Screen readers can be programmed to read only headings, subheadings and links. When something of interest pops out from this “skimming” process, the user can stop and have all the information [...]
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