Kilotest: Diagnoses of attribute value invalid violation by HTML element 185 on Founders Pledge page

Basics

About the page

• URL: https://www.founderspledge.com/
• Tested 3 days ago on 2026-10-07 at 21:27 by job 261007T2113-g5v
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 485
  • Violators: 144
  • Issues: 54
• 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: 2
• Violators: 1

About the violator

• Tag name: IFRAME
• Text: [not applicable]
• Start tag: <iframe frameborder="0" allowfullscreen="" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" title="It Starts With A Pledge" width="100%" height="100%" src="https://www.youtube-nocookie.com/embed/g3k8vD_rCik?autoplay=1&amp;mute=1&amp;controls=1&amp;origin=https%3A%2F%2Fwww.founderspledge.com&amp;playsinline=1&amp;showinfo=0&amp;rel=0&amp;iv_load_policy=3&amp;modestbranding=1&amp;enablejsapi=1&amp;widgetid=1&amp;forigin=https%3A%2F%2Fwww.founderspledge.com%2F&amp;aoriginsup=1&amp;vf=1" id="widget2">
• XPath: /html/body/main[1]/section[1]/div[1]/section[1]/div[2]/figure[1]/div[1]/div[1]/iframe[1]
• Bounding box: x = 1125, y = 1303, width = 715, height = 402
• Reported by Html Checker API

Diagnoses

Here is how rule engines diagnose the attribute value invalid issue for HTML element 185 of the Founders Pledge page.

1. Bad value 100% for attribute width on element iframe: Expected a digit but saw % instead.

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

2. Bad value 100% for attribute height on element iframe: Expected a digit but saw % instead.

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