Kilotest: Diagnoses of iframe not named violation by HTML element 1152 on Mozilla Foundation page

Basics

About the page

• URL: https://www.mozilla.org/en-US/
• Tested 32 days ago on 2026-09-08 at 04:02 by job 260908T0359-xmh
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 753
  • Violators: 192
  • Issues: 47
• Download the full technical report (JSON)

About the issue

• Why it matters: User cannot get help on the topic of an embedded page
• Priority: highest
• Related WCAG standard: 4.1.2
• Reported by 2 rule engines (ASLint + HTML CodeSniffer)
• Violations: 2
• Violators: 2

About the violator

• Tag name: IFRAME
• Text: Products … Website Privacy Notice Cookies Legal Community Participation Guidelines About this site
• Start tag: <iframe height="0" width="0" style="display: none; visibility: hidden;">
• XPath: /html/body/iframe[1]
• Bounding box: [not obtained]
• Reported by HTML CodeSniffer

Diagnoses

Here is how rule engines diagnose the iframe not named issue for HTML element 1152 of the Mozilla Foundation page.

1. Iframe element requires a non-empty title attribute that identifies the frame.

   Rule engine: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle2.Guideline2_4.2_4_1.H64.1