How to test website accessibility

How to test website accessibility

How to Test Website Accessibility

Ensuring Inclusive Digital Experiences


Testing website accessibility is a crucial step in creating inclusive online experiences for all users. By conducting accessibility tests, businesses and organizations can identify barriers that may prevent individuals with disabilities from accessing and navigating web content. This article provides guidance on how to test website accessibility, highlighting various approaches and tools that can help ensure a more accessible and inclusive digital environment.

Manual Accessibility Testing

Manual accessibility testing involves a human tester thoroughly reviewing the website to identify potential accessibility barriers. Testers follow established accessibility guidelines, such as the Web Content Accessibility Guidelines (WCAG), and assess the website’s compliance with these standards. They navigate through the website, inspecting elements such as color contrast, form fields, headings, links, multimedia content, and keyboard accessibility. Manual testing allows for a comprehensive evaluation and helps identify specific accessibility issues that automated tools may not detect.

Usability Testing with Individuals with Disabilities

Usability testing involves engaging individuals with disabilities to assess the website’s accessibility from their perspective. By involving users with various disabilities, such as visual impairments, hearing impairments, motor impairments, and cognitive disabilities, businesses gain valuable insights into the usability and accessibility of their websites. Usability testing can include tasks that mimic real-life scenarios, allowing testers to observe how individuals with disabilities interact with the website and identify any accessibility barriers or challenges they encounter.

Screen Reader Testing

Screen readers are assistive technologies used by individuals with visual impairments to access web content. Testing the website with screen readers is essential to ensure that the content is properly conveyed audibly. Testers simulate screen reader usage by navigating through the website using keyboard commands and listening to the screen reader output. This testing helps identify issues such as missing or incorrect alternative text for images, improperly labeled form fields, and inconsistent heading structure. Various screen reader software, such as JAWS, NVDA, and VoiceOver, are available for testing on different platforms.

Keyboard Accessibility Testing

Keyboard accessibility is crucial for individuals who rely on keyboard navigation due to mobility or dexterity impairments. Keyboard accessibility testing involves navigating through the website using only the keyboard, without the use of a mouse or other pointing device. Testers ensure that all interactive elements, such as links, buttons, and form fields, can be accessed and operated using keyboard commands. They also check that the website maintains a clear and visible focus indicator, indicating the currently focused element for users navigating with a keyboard.

Automated Accessibility Testing

Automated accessibility testing involves using software tools that scan the website and automatically check for common accessibility issues. These tools analyze the website’s code and content to identify potential accessibility barriers. They can detect issues such as missing alternative text for images, improper heading structure, color contrast violations, and form field labeling errors. While automated tools are useful for identifying certain accessibility issues, they may not catch all barriers and may generate false positives or false negatives. It is important to use automated testing as a complement to manual testing and human judgment.

Online Accessibility Testing Tools

Several online accessibility testing tools are available that provide automated testing capabilities and generate detailed reports. These tools, such as WebAIM’s WAVE, Axe, and AChecker, allow users to enter a website’s URL and perform accessibility scans. The tools provide insights into potential accessibility issues and offer recommendations for improvement. Online testing tools are convenient and efficient, providing a starting point for identifying accessibility barriers. However, it is important to remember that manual testing and human judgment are still necessary for a comprehensive assessment of website accessibility.

Accessibility Audits and Expert Reviews

Accessibility audits involve in-depth assessments of website accessibility conducted by accessibility experts. These experts review the website’s design, code, and content to identify accessibility barriers and evaluate its compliance with accessibility standards and guidelines. Accessibility audits can provide a detailed analysis of the website’s accessibility, including specific recommendations for improvement. Engaging professional accessibility consultants or auditors can be valuable, especially for large-scale projects or organizations that require a comprehensive evaluation of their website’s accessibility.

Ongoing Testing and Maintenance

Website accessibility is not a one-time effort but an ongoing process. Regular testing and maintenance are essential to ensure that the website remains accessible as it evolves and new content is added. Periodic accessibility testing helps identify any accessibility issues that may arise from updates or changes to the website. It is crucial to address accessibility barriers promptly and regularly reassess the website’s compliance with accessibility standards.


Testing website accessibility is a vital step in creating inclusive digital experiences for all users. Manual testing, usability testing with individuals with disabilities, screen reader testing, keyboard accessibility testing, automated testing tools, online accessibility testing tools, accessibility audits, and ongoing testing are all important components of a comprehensive accessibility testing strategy. By adopting a proactive approach to testing, businesses and organizations can identify and address accessibility barriers, ensuring a more inclusive and accessible online environment for everyone.

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