Kilotest: Diagnoses of heading level skipped violation by HTML element 868 on Centre for Effective Altruism page

Basics

About the Centre for Effective Altruism page

About HTML element 868

About the heading level skipped issue

Diagnoses

Here is how tools diagnose the heading level skipped issue for HTML element 868 of the Centre for Effective Altruism page.

  1. Heading levels should only increase by one; Heading order invalid

    Tool: Axe (Deque)

    Rule: heading-order

  2. <p>Headings and subheadings create a <a href="https://www.w3.org/WAI/tutorials/page-structure/headings/" target="_blank" title="Opens in new tab">navigable table of contents</a> for assistive devices. The numbers indicate indents in a nesting relationship:</p> <ul> <li>Heading level 1 <ul> <li>Heading level 2: a topic <ul><li>Heading level 3: a subtopic</li></ul></li> <li>Heading level 2: a new topic</li> </ul> </li> </ul> <p>This heading skipped from level 2 to level 4. From a screen reader, this sounds like content is missing.</p> <p><strong>To fix:</strong> adjust levels to form an accurate outline, without gaps.</p>

    Tool: Editoria11y (Princeton University)

    Rule: headingLevelSkipped

  3. The heading h4 (with computed level 4) follows the heading h2 (with computed level 2), skipping 1 heading level.

    Tool: Html Checker API (World Wide Web Consortium)