Kilotest: Diagnoses of meta element duplicated violation by HTML element 29 on Mozilla Foundation join us page

Basics

About the page

• URL: https://www.mozillafoundation.org/en/join-us/
• Tested 3 days ago on 2026-10-07 at 21:54 by job 261007T2132-l0b
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 1762
  • Violators: 211
  • Issues: 46
• Download the full technical report (JSON)

About the issue

• Why it matters: Browser may process the page incorrectly
• Priority: high
• Related WCAG standard: 4.1
• Reported by 1 rule engine (Html Checker)
• Violations: 1
• Violators: 1

About the violator

• Tag name: META
• Text: [not applicable]
• Start tag: <meta name="description" content="The Internet is built by people like you. Join Mozilla Foundation and make technology a force for good.">
• XPath: /html/head[1]/meta[18]
• Bounding box: [not obtained]
• Reported by Html Checker

Diagnoses

Here is how rule engines diagnose the meta element duplicated issue for HTML element 29 of the Mozilla Foundation join us page.

1. A document must not include more than one meta element with its name attribute set to the value description.

   Rule engine: Html Checker (World Wide Web Consortium)