Kilotest: Diagnoses of ID not unique violation by HTML element 501 on EarthShare page

Basics

About the EarthShare page

• URL: https://www.earthshare.org/
• Tested 29 days ago by job al0 on 2026-05-03 at 17:03

About HTML element 501

• Tag name: svg
• Text: [not applicable]
• Start tag: <svg xmlns="http://www.w3.org/2000/svg" id="Layer_2" viewBox="0 0 68.96 76.4">
• XPath: [not obtained]
• Bounding box: x = 785, y = 1353, width = 50, height = 50

About the ID not unique issue

• Why it matters: User may be pointed to the wrong item
• Priority: highest
• Related WCAG standard: 4.1.1

Diagnoses

Here is how tools diagnose the ID not unique issue for HTML element 501 of the EarthShare page.

1. The element does not have a unique ID

   Tool: Alfa (Siteimprove)

   Rule: r3

2. Duplicate id attribute value "Layer_2" found on the web page.

   Tool: HTML CodeSniffer (Squiz Labs)

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

3. [failed]

   Tool: QualWeb (University of Lisbon)

   Rule: QW-BP30