About Us
It’s unmistakable that the world has a greater reliance on the web and online services. This demand means that equal access to information for all is more critical than ever before. Chax is here to help.

A Culture of Learning
Our “people first” philosophy prioritizes professional development, fostering a culture of learning to stay aligned with evolving industry standards. This commitment enables us to deliver the most inclusive programs, products, and solutions.
Our dedication to inclusivity and professional growth laid the foundation for Chax’s evolution. In 2022, Chad Chelius and Dax Castro founded Chax after many years of independent consulting and training. At the end of 2023, Chax merged with Tamman, forming a global leader in accessibility services with a combined team of dozens of experts, many certified by the IAAP or Trusted Testers, and expanded our robust internal training program. Chad and Dax are both IAAP-certified document specialists and Adobe-certified trainers. Together, together with over a dozen additional accessibility subject matter experts, we bring decades of experience, keeping accessibility at the forefront of our work.
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