Kilotest: Diagnoses of attribute value invalid violation by HTML element 1139 on Centre for Effective Altruism page

Basics

About the Centre for Effective Altruism page

• URL: https://www.effectivealtruism.org/
• Tested 38 days ago by job 6gw on 2026-04-24 at 21:54

About HTML element 1139

• Tag name: SCRIPT
• Text: [not applicable]
• Start tag: <script src="https://plausible.io/js/script.outbound-links.tagged-events.js" async="true" defer="true" data-domain="effectivealtruism.org" data-nscript="afterInteractive">
• XPath: /html/body/script[2]
• Bounding box: x = 0, y = 0, width = 0, height = 0

About the attribute value invalid issue

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

Diagnoses

Here is how tools diagnose the attribute value invalid issue for HTML element 1139 of the Centre for Effective Altruism page.

1. Bad value true for attribute async on element script.

   Tool: Html Checker API (World Wide Web Consortium)

2. Bad value true for attribute defer on element script.

   Tool: Html Checker API (World Wide Web Consortium)