Kilotest: Diagnoses of attribute value invalid violation by HTML element 2455 on Good Food Institute (GFI) page

Basics

About the page

• URL: https://gfi.org/
• Tested 3 days ago on 2026-10-07 at 21:39 by job 261007T2129-czj
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 1594
  • Violators: 901
  • Issues: 61
• Download the full technical report (JSON)

About the issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1
• Reported by 1 rule engine (Html Checker API)
• Violations: 81
• Violators: 81

About the violator

• Tag name: SOURCE
• Text: [not applicable]
• Start tag: <source srcset="https://gfi.org/wp-content/uploads/2025/04/DEV24019_YIR-page-graphics_featuredimage-603x757.png.webp" sizes="(max-width: 603px) 100vw, 603px" type="image/webp">
• XPath: /html/body/main[1]/div[1]/div[6]/div[1]/div[1]/figure[1]/picture[1]/source[1]
• Bounding box: x = 1085, y = 5910, width = 0, height = 20
• Reported by Html Checker API

Diagnoses

Here is how rule engines diagnose the attribute value invalid issue for HTML element 2455 of the Good Food Institute (GFI) page.

1. Bad value https://gfi.org/wp-content/uploads/2025/04/DEV24019_YIR-page-graphics_featuredimage-603x757.png.webp for attribute srcset on element source: No width specified for image https://gfi.org/wp-conten…redimage-603x757.png.webp. (When the sizes attribute is present, all image candidate strings must specify a width.)

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