Kilotest: Diagnoses of sizes attribute invalid violation by HTML element 258 on GiveDirectly page

Here is how tools diagnose the sizes attribute invalid issue for HTML element 258 of the GiveDirectly page.

Basics

• About the sizes attribute invalid issue
  • Why it matters: Item behaves improperly
  • Priority: highest
  • Related WCAG standard: 1.3.1
• About the GiveDirectly page
  • URL: https://www.givedirectly.org/
  • Tested on 2026-04-02 at 14:25
• About HTML element 258
  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img fetchpriority="high" decoding="async" width="1440" height="730" class="wp-block-cover__image-background wp-image-20123 size-full" alt="" src="https://www.givedirectly.org/wp-content/uploads/2023/07/Mercy-Leonard-in-Malawi_Desktop-jpeg.webp" style="object-position:82% 7%" data-object-fit="cover" data-object-position="82% 7%" sizes="(max-width: 1440px) 100vw, 1440px">
  • XPath: /html/body/div[1]/main[1]/div[1]/div[1]/picture[1]/img[1]
  • Bounding box: x = 1040, y = 73, width = 1920, height = 726

Diagnoses

1. The sizes attribute must only be specified if the srcset attribute is also specified.

   Tool: Html Checker API (World Wide Web Consortium)