Kilotest: Diagnoses of link element invalid violation by HTML element 143 on Portland General Electric page

Basics

About the Portland General Electric page

About HTML element 143

About the link element invalid issue

Diagnoses

Here is how tools diagnose the link element invalid issue for HTML element 143 of the Portland General Electric page.

  1. A link element with an as attribute must have a rel attribute that contains the value preload or the value modulepreload.

    Tool: Html Checker API (World Wide Web Consortium)