Kilotest: Diagnoses of blink element violation by HTML element 250 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: Motion-sensitive user may suffer harm
• Priority: highest
• Related WCAG standard: 2.2.2
• Reported by 6 rule engines (Accessibility Checker + Axe + Html Checker API + HTML CodeSniffer + QualWeb + WAVE)
• Violations: 6
• Violators: 1

About the violator

• Tag name: BLINK
• Text: Products … About us
• Start tag: <blink class="spacer-gif">
• XPath: /html/body/nav[1]/div[1]/div[1]/blink[1]
• Bounding box: x = 1548, y = 16, width = 100, height = 0
• Reported by Accessibility Checker + Axe + Html Checker API + HTML CodeSniffer + QualWeb + WAVE

Diagnoses

Here is how rule engines diagnose the blink element issue for HTML element 250 of the Mozilla Foundation page.

1. <blink> elements are deprecated and must not be used

   Rule engine: Axe (Deque)

   Rule: blink

2. Blink elements cannot satisfy the requirement that blinking information can be stopped within five seconds.

   Rule engine: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle2.Guideline2_2.2_2_2.F47

3. Content found that blinks persistently

   Rule engine: Accessibility Checker (IBM)

   Rule: blink_elem_deprecated

4. The blink element is obsolete. Use CSS instead.

   Rule engine: Html Checker API (World Wide Web Consortium)

5. [failed] Used blink element.

   Rule engine: QualWeb (University of Lisbon)

   Rule: QW-WCAG-T13

6. Blinking content

   Rule engine: WAVE (Utah State University)

   Rule: blink