noindex
A directive, in a meta tag or an HTTP header, telling search systems to keep this page out of their index.
What it means
It appears two ways: a meta robots tag in the document head, or an X-Robots-Tag response header. Both work. The header version is easier to miss because it never shows up in view-source.
The part a short definition leaves out
The most common noindex is the one nobody chose. It gets set during a staging build, applied by a plugin to a whole content type, or inherited from a template someone copied. QuickRankAI checks both locations for exactly this reason.
Where this comes from
See whether this is costing you anything
The inspection reports on this signal directly, alongside thirty-seven others, and tells you whether it is a quick fix on your site or something deeper.