Kilotest: Diagnoses of sizes attribute invalid violation by HTML element 298 on Portland State University Senior Adult Learning Center page

Here is how tools diagnose the sizes attribute invalid issue for HTML element 298 of the Portland State University Senior Adult Learning Center page.

Basics

• About the sizes attribute invalid issue
  • Why it matters: Item behaves improperly
  • Priority: highest
  • Related WCAG standard: 1.3.1
• About the Portland State University Senior Adult Learning Center page
  • URL: https://www.pdx.edu/senior-adult-learning-center/
  • Tested on 2026-04-07 at 18:28
• About HTML element 298
  • Tag name: SOURCE
  • Text: [not applicable]
  • Start tag: <source srcset="/senior-adult-learning-center/sites/senioradultlearningcenter.web.wdt.pdx.edu/files/styles/large_hero_media_medium_773_x_315/public/2024-09/20170518_PSU_Spring_345.jpg?h=790be497&amp;itok=U_iQZu8k 1x" media="(min-width: 768px)" type="image/jpeg" width="773" height="315">
  • XPath: [not obtained]
  • Bounding box: x = 960, y = 121, width = 0, height = 0

Diagnoses

1. When the srcset attribute has any image candidate string with a width descriptor, the sizes attribute must also be specified.

   Tool: Html Checker API (World Wide Web Consortium)

2. When the srcset attribute has any image candidate string with a width descriptor, the sizes attribute must also be specified.

   Tool: Html Checker API (World Wide Web Consortium)