Kilotest: Diagnoses of ID not unique violation by HTML element 305 on California YIMBY Education Fund page

Basics

About the California YIMBY Education Fund page

• URL: https://cayimby.org/
• Tested 29 days ago by job 6d3 on 2026-05-03 at 17:05

About HTML element 305

• Tag name: FORM
• Text: Sign Up
• Start tag: <form id="an_form">
• XPath: /html/body/div[1]/footer[1]/div[1]/div[1]/div[1]/div[2]/form[1]
• Bounding box: x = 1028, y = 3903, width = 540, height = 48

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 305 of the California YIMBY Education Fund page.

1. The element does not have a unique ID

   Tool: Alfa (Siteimprove)

   Rule: r3

2. Attribute <code>id="email"</code> should be unique. It has been defined 2 times.

   Tool: ASLint (eSSENTIAL Accessibility)

   Rule: duplicated_id_attribute

3. Duplicate id attribute value "an_form" found on the web page.

   Tool: HTML CodeSniffer (Squiz Labs)

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

4. Duplicate ID an_form.

   Tool: Html Checker API (World Wide Web Consortium)

5. [failed]

   Tool: QualWeb (University of Lisbon)

   Rule: QW-BP30