Three behaviors for developers getting started with accessibility

Scheduled at 9:15am in Plaza Court 1 on Thursday, November 18.



  • Valorie Sundby, Principal Digital Accessibility Engineer, Optum
  • Nora Stern, Senior Digital Accessibility Engineer, Optum

Session Details

  • Length of Session: 1-hr
  • Format: Lecture
  • Expertise Level: Beginner
  • Type of session: General Conference


Eliminate 85% of accessibility defects by adopting three developer behaviors: Validate html, integrate a testing tool, and keyboard test. A surprising number of defects are preventable by adopting these three web developer behaviors.


Eliminate 85% of accessibility defects in web development by adopting three developer behaviors in the definition of done. 1. Validate Html: Learn how to check that HTML meets the standards. Valid HTML is a key part of robust content. Consistency in meeting the standard allows users the flexibility to engage with content using technology that works best to them. 2. Integrate a testing tool: We will walk through some of the free tools widely used in the accessibility industry. 3. Keyboard testing: Keyboard testing goes beyond "tabbing" through a web page or screen.

Many people testing accessibility immediately reach for the screen reader. While screen readers can catch many accessibility issues, integrating the first three behaviors is more efficient.


  1. Add three behaviors into your definition of done to eliminate 85% of web accessibility defects
  2. Learn how to use tools and services as part of the three behaviors to add to your definition of done
  3. Validating html behavior ensures that web content meets specifications and creates a robust product

Disability Areas

All Areas

Topic Areas

Accessible Course Design, Uncategorized, Web/Media Access

Speaker Bio(s)

Valorie Sundby

Valorie Sundby, she/her/hers. CPWA, ADS

Valorie Sundby graduated from the University of Arizona with a Bachelor of Science in Business Administration with a major in Management Information Systems. She has specialized in Web Accessibility Compliance since 2009. Prior to finding her professional home at Optum, Valorie worked in a variety of industries including Higher Ed. Valorie's long-standing motto is that accessibility is a journey and not a destination. Staying current with ever changing technologies and best practices is key to continual improvement.

Nora Stern

Nora joined Optum as a Senior Digital Accessibility Engineer after a career in teaching and course design. Nora earned a Master of Arts, Information and Learning Technologies at the University of Colorado. She developed and facilitated online and face-to-face web accessibility training for staff related to web authoring and Adobe and Microsoft accessibility.