Kilotest: Diagnoses of attribute value invalid violation by HTML element 49 on Environmental Working Group page

Basics

About the page

• URL: https://www.ewg.org/
• Tested 3 days ago on 2026-10-07 at 21:15 by job 261007T2112-2p4
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 1488
  • Violators: 693
  • Issues: 63
• Download the full technical report (JSON)

About the issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1
• Reported by 1 rule engine (Html Checker API)
• Violations: 7
• Violators: 7

About the violator

• Tag name: SCRIPT
• Text: [not applicable]
• Start tag: <script src="https://bat.bing.com/p/action/17156808.js" type="text/javascript" async="" data-ueto="ueto_4ccfbc2c2b">
• XPath: /html/head[1]/script[23]
• Bounding box: [not obtained]
• Reported by Html Checker API

Diagnoses

Here is how rule engines diagnose the attribute value invalid issue for HTML element 49 of the Environmental Working Group page.

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

   Rule engine: Html Checker API (World Wide Web Consortium)