Heading Order must be appropriate

Rule ID: heading-order
Ruleset: axe-pdf 2.0
User Impact: Serious
Guidelines: PDF/UA

Start building more accessible experiences

Axe DevTools Pro helps dev teams find and fix up to 80% of accessibility issues while coding. No experience required. Get started with your free trial today.

Compliance Data & Impact

User Impact

Serious
Minor
Critical

Disabilities Affected

  • Blind
  • Deafblind
  • Mobility

Standard(s)

  • PDF/UA

    How to Fix the Problem

    Ensure headings are in a logical order. Check that all headings are marked with H1 through H6 tags and that these are ordered hierarchically. For example, the heading level following an H1 tag should be an H2 tag, not an H3 tag.

    Why it Matters

    When heading elements are applied correctly, the page becomes much easier to navigate for screen reader users and sighted users alike. In the same way that sighted users can glance at a page and get a sense of its contents, users of screen readers can do the same by navigating through headings. Properly tagged headings can save users, especially those who use screen readers, a lot of time and frustration.

    Rule Description

    Headings must be in a valid logical order, meaning H1 through H6 element tags must appear in a sequentially-descending order.

    The Algorithm (in simple terms)

    Ensure the order of headings is sequential.

    Resources

    Refer to the complete list of axe 2.0 rules.

    Was this information helpful?

    You have already given your feedback, thank you..

    Your response was as follows:

    Was this information helpful?
    Date/Time feedback was submitted: