Link Purpose (Link Only)
Summary:
WCAG 2.4.9, "Link Purpose (Link Only)," focuses on ensuring that the purpose of each link is clear from the link text itself. This AAA level criterion is crucial for users who rely on assistive technologies, such as screen readers, to navigate web content.
What:
This guideline requires that the purpose of each link on a webpage can be understood from the link text alone. It aims to make navigation more intuitive and efficient, especially for those who cannot rely on surrounding contextual information.
Why:
Users with visual impairments often navigate using screen readers that read out link text. If link text is vague like 'click here,' it doesn't convey the destination or function of the link, making navigation difficult. Clear, descriptive link text allows these users to better understand where each link leads, aiding in their decision to engage with the content.
Examples and Scenarios:
- Educational Content: Use link text like "Download History Course Syllabus" instead of "Download Here."
- Blog Posts: For links to related articles, use specific titles like "Read more about Web Accessibility Benefits" instead of "Read More."
- Service Pages: On a service page, use link text such as "Learn about our Web Design Services" rather than "Click here for services."
How to Comply:
- Websites: Craft link texts that are self-explanatory, clearly indicating the nature or destination of the link.
- Mobile Apps: Ensure that all links within the app provide clear information about their purpose through the link text alone.
- Software Applications: Use descriptive text for hyperlinks, avoiding vague phrases and ensuring clarity of purpose.
Exceptions:
- Ambiguous Links: If the purpose of the link is ambiguous or general, such as navigation links labeled 'Home' or 'Contact,' which are universally understood.
- User-Generated Content: In platforms where content is primarily user-generated, enforcing descriptive link texts for every link might not be feasible.