Kilotest: Diagnoses of meta invalid violation by HTML element 38 on Prometheus page

Here is how tools diagnose the meta invalid issue for HTML element 38 of the Prometheus page.

Basics

• About the meta invalid issue
  • Why it matters: Document fails to include needed data
  • Priority: high
  • Related WCAG standard: 1.3.1
• About the Prometheus page
  • URL: https://www.joinprometheus.org/
  • Tested on 2026-04-07 at 19:19
• About HTML element 38
  • Tag name: META
  • Text: [not applicable]
  • Start tag: <meta http-equiv="X-Wix-Application-Instance-Id" content="3d6173e7-6efd-49d3-888e-52b17f486163">
  • XPath: /html/head[1]/meta[10]
  • Bounding box: x = 0, y = 0, width = 0, height = 0

Diagnoses

1. Bad value X-Wix-Application-Instance-Id for attribute http-equiv on element meta.

   Tool: Html Checker API (World Wide Web Consortium)