What Is Accessibility Testing? A Complete Beginner’s Guide

In today’s digital-first world, websites and applications are no longer just for the able-bodied. Over 1.3 billion people worldwide live with some form of disability, and accessible design ensures everyone can interact with your product seamlessly. Yet, according to the WebAIM Million report, a staggering 94.8% of homepages still have detectable WCAG failures—an average of 51 errors per page. This is where accessibility testing comes in. It’s not an afterthought or a checkbox for legal compliance; it’s a proactive process that makes digital experiences inclusive, user-friendly, and often more profitable. At SDET Tech, an AI-driven Quality Engineering company specializing in accessibility testing (ADA & WCAG), we’ve helped enterprises across industries turn accessibility from a compliance burden into a competitive advantage. Whether you’re a developer, product manager, QA engineer, or business owner just starting out, this complete beginner’s guide will walk you through everything you n