An accessibility checker evaluates whether a website can be accessed and used by people with disabilities. It measures compliance with accessibility standards such as the Web Content Accessibility Guidelines (WCAG), which define best practices for inclusive digital design. Accessibility checkers identify barriers that prevent equal access to information and functionality.
Accessibility testing covers users with visual, auditory, motor, and cognitive impairments. Common checks include screen reader compatibility, keyboard navigation support, color contrast ratios, text readability, and semantic HTML structure. Missing alt text on images can block visually impaired users from understanding content, while improper heading structures can confuse assistive technologies.
Accessibility checkers generate detailed reports highlighting issues and recommending corrective actions. Improving accessibility enhances usability for all users, not just those with disabilities. Accessible websites are easier to navigate, understand, and interact with. Accessibility compliance also reduces legal and regulatory risks, as many regions enforce digital accessibility laws.
Beyond compliance, accessibility reflects ethical responsibility and inclusive design principles. It expands audience reach, improves engagement, and strengthens brand trust. Accessibility checkers play a vital role in modern web development and digital governance.