Kilotest: Diagnoses of attribute invalid violation by HTML element 326 on Probably Good page

Basics

About the Probably Good page

• URL: https://probablygood.org/
• Tested 3 days ago by job n2u on 2026-05-30 at 00:32

About HTML element 326

• Tag name: SPAN
• Text: About us
• Start tag: <span class="ez-toc-section" id="About_us" ez-toc-data-id="#About_us">
• XPath: /html/body/div[3]/div[1]/div[1]/main[1]/article[1]/div[1]/div[1]/div[3]/h2[1]/span[1]
• Bounding box: x = 448, y = 1807, width = 0, height = 40

About the attribute invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how tools diagnose the attribute invalid issue for HTML element 326 of the Probably Good page.

1. Attribute ez-toc-data-id not allowed on element span at this point.

   Tool: Html Checker API (World Wide Web Consortium)