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SEO glossary

Noindex

Noindex is a directive that tells search engines not to include a page in their index.

In plain English

You apply it via a meta robots tag or X-Robots-Tag HTTP header. Use it on thin, duplicate, private, or utility pages you don't want competing in search — but never on pages you actually want to rank.

Why it matters for SEO

A misplaced noindex silently removes a page from search; an absent one lets thin pages dilute your site's quality signals.

Related terms

Frequently asked questions

What is Noindex?
Noindex is a directive that tells search engines not to include a page in their index.
Why does Noindex matter for SEO?
A misplaced noindex silently removes a page from search; an absent one lets thin pages dilute your site's quality signals.
How does Noindex work?
You apply it via a meta robots tag or X-Robots-Tag HTTP header. Use it on thin, duplicate, private, or utility pages you don't want competing in search — but never on pages you actually want to rank.

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