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

Here is how tools diagnose the ID not unique issue for HTML element 305 of the California YIMBY Education Fund page.

Basics

• 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
• About the California YIMBY Education Fund page
  • URL: https://cayimby.org/
  • Tested on 2026-04-02 at 14:22
• About HTML element 305
  • Tag name: INPUT
  • Text: Sign Up
  • Start tag: <input type="text" name="email" id="email" placeholder="Enter your email address">
  • XPath: /html/body/div[1]/footer[1]/div[1]/div[1]/div[1]/div[2]/form[1]/input[1]
  • Bounding box: x = 1028, y = 3871, width = 402, height = 48

Diagnoses

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

   Tool: HTML CodeSniffer (Squiz Labs)

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

2. Duplicate ID email.

   Tool: Html Checker API (World Wide Web Consortium)

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

   Tool: WallyAX (Wally)