SEO009 · <html lang>
Severity: warning
What it checks
Section titled “What it checks”The <html> element in src/app.html must have a non-empty lang attribute. A missing or empty lang attribute is flagged.
Why it matters
Section titled “Why it matters”The <html lang> attribute declares the page language for search engines, screen readers, and translation tools.
How to fix
Section titled “How to fix”Set <html lang="..."> in src/app.html:
<html lang="en"></html>