Kilotest: Diagnoses of attribute invalid violation by HTML element 310 on California Groundbreakers page

Here is how tools diagnose the attribute invalid issue for HTML element 310 of the California Groundbreakers page.

Basics

• About the attribute invalid issue
  • Why it matters: Item behaves improperly
  • Priority: highest
  • Related WCAG standard: 1.3.1
• About the California Groundbreakers page
  • URL: https://www.californiagroundbreakers.org/
  • Tested on 2026-04-02 at 14:21
• About HTML element 310
  • Tag name: IMG
  • Text: [not applicable]
  • Start tag: <img data-stretch="true" data-src="https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png" data-image="https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png" data-image-dimensions="750x750" data-image-focal-point="0.5,0.5" alt="events3.png" data-load="false" elementtiming="system-image-block" src="https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png" width="750" height="750" sizes="(max-width: 640px) 100vw, (max-width: 767px) 33.33333333333333vw, 33.33333333333333vw" style="display:block;object-fit: cover; width: 100%; height: 100%; object-position: 50% 50%" onload="this.classList.add(&quot;loaded&quot;)" srcset="https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png?format=100w 100w, https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png?format=300w 300w, https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png?format=500w 500w, https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png?format=750w 750w, https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png?format=1000w 1000w, https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png?format=1500w 1500w, https://images.squarespace-cdn.com/content/v1/5743898e859fd042ddd4374c/1473722288463-YSKHBEHHRQSD5W6EQ8M2/events3.png?format=2500w 2500w" loading="lazy" decoding="async" data-loader="sqs" class="loaded">
  • XPath: [not obtained]
  • Bounding box: x = 1142, y = 2676, width = 296, height = 296

Diagnoses

1. Attribute elementtiming not allowed on element img at this point.

   Tool: Html Checker API (World Wide Web Consortium)