In today's rapidly evolving digital landscape, accessibility testing has become a crucial aspect of web development, ensuring websites and web applications are usable by everyone, including those with disabilities. With 15% of the global population experiencing some form of disability, accessibility testing helps organizations expand their audience by making digital content accessible to all users, thereby enhancing usability, user experience, and potentially increasing revenue. Accessibility testing, a subset of usability testing, involves both manual and automated approaches to ensure compliance with guidelines set by the World Wide Web Consortium (W3C) and avoiding legal issues, such as those arising from noncompliance with laws like the Americans With Disabilities Act (ADA) in the USA. Despite common myths that accessibility testing is costly and complex, incorporating it early in the software development lifecycle can prevent expensive legal complications and improve search engine optimization. The process involves addressing various disabilities, using tools such as screen readers and speech recognition, and adhering to standards for perceivability, operability, understandability, and robustness. Platforms like LambdaTest facilitate accessibility testing across multiple devices and browsers, making it an integral part of modern web development to ensure inclusivity and legal compliance.