Next month I will continue the tradition of flying over to Austin, TX, USA to attend the annual AccessU conference and teach some classes. Organized by Knowbility, the conference is a gathering of brilliant minds around accessibility and is an excellent opportunity to broaden your accessibility knowledge. Here’s an overview of my four classes:

  • Responsive and Accessible Images (March 17, 2017 – 2:15pm–3:45pm)
    Images are an important part of the web. This course will give an overview of the considerations for accessible images and their alternative texts, but also take a look from a content strategist perspective on how to present pictures in a responsive context. You will learn how to write good alt text, when longer descriptions are necessary, using resolution-independent images, and how to use different images in different responsive contexts for art direction.
  • Advanced Accessibility: Deep Dive for Developers (March 17, 2017 – 4pm–5:30pm)
    This session gives a general overview of good development practices that ensure a more accessible web product. It includes ARIA, styling, and advice for making your website more semantic and thus more accessible to everyone.
  • Use ARIA Responsibly (March 18, 2017 – 8:30am–10:00am)
    How to build web components, websites, and web applications in a way that leverages the capabilities of HTML5. Add ARIA on top to enhance the user experience. You’ll learn where to find information on how to implement ARIA correctly, and shows you a practical example.
  • Simplify Your Development Life with Tools, Tests, and Procedures (March 18, 2017 – 10:15am–11:45am)
    A condensed overview on how developers can simplify their life by making sure that procedures and tests are in place to ensure accessibility in every step.

Tickets for AccessU are still available.

Also, Knowbility is organizing the Inaugural Knowbility Accessibility
Leadership Symposium on May 15th and 16th: The opportunity for senior management to collaborate, confer and learn about accessibility challenges in the enterprise and how to address them, leading to a more diverse customer base.

After AccessU, I’ll attend the W3C Education and Outreach Working Group’s Face to Face Meeting on May 19 and 20.

Great video over at the Google Chrome Developers channel about the upcoming CSS Level 4 :focus-ring selector (draft). The focus is often removed for stylistic reasons when using the mouse, but then keyboard users also have no indication of where they are on the website. :focus-ring solves that issue.

Focus Ring! -- A11ycasts #16

The video includes a shout out to this handy polyfill on Github. There are other videos about accessibility, also presented by Rob Dodson, available on the channel as well. Captions are available.

I’m happy to announce here that I will be speaking at Accessing Higher Ground in November, representing Knowbility. The conference is in Westminster, Colorado and coins itself as an “Accessible Media, Web and Technology Conference”.

I will do two three-hour long workshops:

  • Advanced Accessibility: A Deep Dive for Developers
    Tuesday, Nov. 15th, 9am

    Focused on UI widgets, WAI-ARIA techniques and semantics, with some JavaScript as a garnish, this workshop will teach how to implement complex widgets in an accessible way that is true to the nature of the web.
  • Simplify your development life with tools, tests and procedures
    Tuesday, Nov. 15th, 1:30pm

    Developers are lazy. I know this because I am one. So having tools, tests and procedures in place that help developers to produce accessible templates and widgets is helping everyone. This workshop will give a broad overview about the possibilities and will also show how to implement some of the provisions in day-to-day work.

Also, I will give two talks:

  • Semantic Subtleties
    Thursday, Nov. 17th, 8am

    This talk takes some of the semantic particularities that come also up in the workshop and will put them under the microscope and examine their meaning.
  • ARIA Serious?
    Thursday, Nov. 17th, 4pm

    Here, I will presumably give a few good and lots of bad examples of ARIA implementation and show where the pitfalls and chances of using ARIA are.

If you are still thinking about going, maybe the fantastic lineup of speakers can lure you in. Register now at

I always thought that it is not so difficult to find resources about these basics, the recurrence of that question prompted me to finally write my own take on this topic. So here it is, my list of absolute web accessibility basics every web developer should know about.

A very solid overview of basic web accessibility techniques by Marco Zehe.