Glossary

noindex

noindex is a directive — a meta tag or an X-Robots-Tag header — that tells search engines not to index a page even though they may fetch it.

By Reflexa Technologies — the team building Reflexa, the agent that works on your site · updated 16 October 2026

Why it matters

A page that is not indexed is not in the material AI search engines retrieve from. On a priority page it is almost always a leftover.

How to see it on your own site

View source for <meta name="robots" content="noindex">; check response headers for X-Robots-Tag.

Checked by Reflexa: Is a priority page marked noindex? — part of the 23 checks on every page check.

Related terms

Questions people ask.

What is noindex?

noindex is a directive — a meta tag or an X-Robots-Tag header — that tells search engines not to index a page even though they may fetch it.

Why does it matter for AI visibility?

A page that is not indexed is not in the material AI search engines retrieve from. On a priority page it is almost always a leftover.

How do I see it on my own site?

View source for <meta name="robots" content="noindex">; check response headers for X-Robots-Tag.

See it measured on your site.

The free page check runs the 23 checks on your public pages — the terms on this page, observed on your pages.

Run the free check →