Kilotest: Diagnoses of ID not unique violation by HTML element 891 on Wikimedia Foundation page

Basics

About the page

• URL: https://wikimediafoundation.org/
• Tested 3 days ago on 2026-10-07 at 23:16 by job 261007T2305-8ye
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 1201
  • Violators: 392
  • Issues: 68
• Download the full technical report (JSON)

About the issue

• Why it matters: User may be pointed to the wrong item
• Priority: highest
• Related WCAG standard: 4.1
• Reported by 4 rule engines (ASLint + Html Checker + HTML CodeSniffer + QualWeb)
• Violations: 74
• Violators: 38

About the violator

• Tag name: A
• Text: File provided by Wikimedia Commons
• Start tag: <a href="https://commons.wikimedia.org/" class="commons-tooltip-wrapper" aria-describedby="commons-tooltip" tabindex="0">
• XPath: /html/body/div[2]/main[1]/section[1]/div[1]/div[1]/div[15]/div[2]/div[1]/a[2]
• Bounding box: x = 1506, y = 5355, width = 14, height = 16
• Reported by ASLint

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 891 of the Wikimedia Foundation page.

1. Attribute <code>id="commons-tooltip"</code> should be unique. It has been defined 18 times.

   Rule engine: ASLint (eSSENTIAL Accessibility)

   Rule: duplicated_id_attribute