Kilotest: Violations of attribute value 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: 12
• Violators: 6

Violators

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

• Element 459

  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img src="https://assets.mofoprod.net/static/foundation_cms/_images/newsletter-signup-success.6d99125c1bf8.jpg" loading="lazy" width="100%" height="100%" alt="Newsletter signup success image">
  • XPath: /html/body/div[3]/div[1]/div[1]/div[2]/div[3]/div[1]/div[1]/div[1]/div[1]/div[1]/div[2]/div[2]/img[1]
  • Bounding box: [not obtained]
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 474

  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img src="https://assets.mofoprod.net/network/images/Campaign_EU-Chat-Control_OG-Image_.2e16d0ba.fill-600x600.png" alt="March 2026 | Meta: Don't Remove Encryption for Instagram DMs" class="activation-card__image" width="100%" height="100%">
  • XPath: /html/body/div[3]/div[1]/div[1]/div[2]/div[5]/div[1]/div[1]/div[1]/section[1]/div[1]/div[1]/div[1]/div[1]/img[1]
  • Bounding box: x = 360, y = 1100, width = 336, height = 336
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 484

  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img src="https://assets.mofoprod.net/network/images/image11.2e16d0ba.fill-600x600.jpg" alt="Defend Encryption" class="activation-card__image" width="100%" height="100%">
  • XPath: /html/body/div[3]/div[1]/div[1]/div[2]/div[5]/div[1]/div[1]/div[1]/section[1]/div[1]/div[2]/div[1]/div[1]/img[1]
  • Bounding box: x = 1224, y = 1452, width = 336, height = 336
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 494

  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img src="https://assets.mofoprod.net/network/images/image31.2e16d0ba.fill-600x600.jpg" alt="Car Companies: Stop Huge Data Collection" class="activation-card__image" width="100%" height="100%">
  • XPath: /html/body/div[3]/div[1]/div[1]/div[2]/div[5]/div[1]/div[1]/div[1]/section[1]/div[1]/div[3]/div[1]/div[1]/img[1]
  • Bounding box: x = 360, y = 1804, width = 336, height = 336
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 814

  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img src="https://assets.mofoprod.net/static/foundation_cms/_images/newsletter-signup-success.6d99125c1bf8.jpg" loading="lazy" width="100%" height="100%" alt="Newsletter signup success image">
  • XPath: /html/body/div[3]/div[1]/div[1]/div[2]/div[7]/div[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[2]/div[2]/img[1]
  • Bounding box: [not obtained]
  • Reported by Html Checker
  • What diagnoses were reported?

• Element 1119

  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img src="https://assets.mofoprod.net/static/foundation_cms/_images/newsletter-signup-success.6d99125c1bf8.jpg" loading="lazy" width="100%" height="100%" alt="Newsletter signup success image">
  • XPath: /html/body/div[3]/footer[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[2]/div[2]/img[1]
  • Bounding box: [not obtained]
  • Reported by Html Checker
  • What diagnoses were reported?