Kilotest: Violations of attribute invalid issue for Mozilla Foundation join us page

Basics

About the page

• URL: https://www.mozillafoundation.org/en/join-us/
• Tested 2 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: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1
• Reported by 1 rule engine (Html Checker)
• Violations: 4
• Violators: 4

Violators

Here are the HTML elements reported to violate rules belonging to the attribute invalid issue.

• Element 25

  • Tag name: META
  • Text: [not applicable]
  • Start tag: <meta itemprop="url" content="https://www.mozillafoundation.org/en/join-us/">
  • XPath: /html/head[1]/meta[14]
  • Bounding box: [not obtained]
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 26

  • Tag name: META
  • Text: [not applicable]
  • Start tag: <meta itemprop="name" content="Drive Change with Mozilla Foundation">
  • XPath: /html/head[1]/meta[15]
  • Bounding box: [not obtained]
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 27

  • Tag name: META
  • Text: [not applicable]
  • Start tag: <meta itemprop="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[16]
  • Bounding box: [not obtained]
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 28

  • Tag name: META
  • Text: [not applicable]
  • Start tag: <meta itemprop="image" content="https://assets.mofoprod.net/network/images/Generic-OG.original.png">
  • XPath: /html/head[1]/meta[17]
  • Bounding box: [not obtained]
  • Reported by Html Checker
  • What diagnoses were reported?