HTML_LANG_MISSING
Missing <html lang> attribute
No automatic fix — this needs a manual change on your siteWhat this check looks at
Whether a page's <html> tag declares a `lang` attribute.
Why AI answer engines care
Without a lang attribute, AI assistants and screen readers have to guess the page's language instead of reading it directly.
Does Synviber fix it for me?
Not currently — this one needs a manual change on your own site or infrastructure; Synviber can detect it but does not publish an automatic fix for it today.
How to fix it manually
Low severity
Scanner message: "Page is missing an <html lang="..."> attribute"
Add a lang attribute to the <html> tag (e.g. <html lang="en">) so AI assistants and screen readers can determine the page's language without having to guess.