Kilotest: Diagnoses of tab-opening link action unstated? violation by HTML element 447 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: Following a link opens a new window, possibly surprising a user
• Priority: lowest
• Related WCAG standard: 3.2.5
• Reported by 3 rule engines (ASLint + Pour + Testaro)
• Violations: 18
• Violators: 12

About the violator

• Tag name: A
• Text: A Double Bottom Line for Tech
• Start tag: <a href="https://www.youtube.com/watch?v=BoFUABRULxg" class="m24-c-gallery-tile-link" data-link-text="a-double-bottom-line-for-tech" target="_blank" rel="external noopener">
• XPath: /html/body/div[2]/main[1]/section[1]/div[1]/div[1]/div[5]/h3[1]/a[1]
• Bounding box: x = 736, y = 3836, width = 448, height = 35
• Reported by Pour + Testaro

Take me there

Diagnoses

Here is how rule engines diagnose the tab-opening link action unstated? issue for HTML element 447 of the Mozilla Foundation page.

1. Links opening a new window should say so

   Rule engine: Pour (David Yarham and Geoffrey Crofte)

   Rule: new-window-link

2. Link has a target=_blank attribute

   Rule engine: Testaro (CVS Health)

   Rule: linkExt