Kilotest: Diagnoses of ID not unique violation by HTML element 436 on Charity Navigator page

Basics

About the page

• URL: https://www.charitynavigator.org/
• Tested 3 days ago on 2026-10-07 at 19:56 by job 261007T1941-rxh
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 720
  • Violators: 293
  • Issues: 47
• 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 API + HTML CodeSniffer + QualWeb)
• Violations: 156
• Violators: 105

About the violator

• Tag name: g
• Text: [not applicable]
• Start tag: <g id="Mask">
• XPath: [not obtained]
• Bounding box: x = 997, y = 465, width = 16, height = 16
• Reported by Html Checker API + HTML CodeSniffer

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 436 of the Charity Navigator page.

1. Duplicate id attribute value "Mask" found on the web page.

   Rule engine: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle4.Guideline4_1.4_1_1.F77

2. Duplicate ID Mask.

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