I'm confused. The page has a HTML5 doctype, and https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/... says that UTF-8 is the only valid encoding for HTML5 documents, yet Firefox interprets the page as Windows-1252 or such until I "Repair Text Encoding". https://webhint.io/docs/user-guide/hints/hint-meta-charset-u... says you're supposed to include a <meta charset="utf-8"> or optionally Content-Type header.