Using the link element and navigation tools

Important Information about Techniques

See Understanding Techniques for WCAG Success Criteria for important information about the usage of these informative techniques and how they relate to the normative WCAG 2.1 success criteria. The Applicability section explains the scope of the technique, and the presence of techniques for a specific technology does not imply that the technology can be used in all situations to create content that meets WCAG 2.1.

Applicability

HTML and XHTML

This technique relates to:

Description

The objective of this technique is to describe how the link element can provide metadata about the position of an HTML page within a set of Web pages or can assist in locating content with a set of Web pages. The value of the rel attributes indicates what type of relation is being described, and the href attribute provides a link to the document having that relation. Multiple link elements can provide multiple relationships. Several values of rel are useful:

Examples

Example 1

A Web page for Chapter 2 of an on-line book might contain the following links within the head section.

<link rel="Contents" href="Contents.html" title="Table of Contents"  />
<link rel="Index" href="Index.html" title="Index" />
<link rel="Prev" href="Chapter01.html" title="01. Why Volunteer?" />
<link rel="Next" href="Chapter03.html" title="03. Who Volunteers?" />

Resources

Resources are for information purposes only, no endorsement implied.

Tests

Procedure

For a Web page that is within a sequence or collection of Web pages:

  1. Check that all link elements pertaining to navigation occur in the head section of the document.
  2. For each link element in the head section of the document which pertains to navigation, check that it contains at least:

    1. a rel attribute identifying the link type
    2. a valid href attribute to locate the appropriate resource

Expected Results

  • All of the checks above are true.