What Is Noindex? Keeping a Page Out of Search
DICTIONARY · SEO

What Is Noindex?

Noindex is a directive telling search engines not to include a page in their index, even though they may crawl it.

In plain English

It is delivered as a meta tag in the page head or as an HTTP header, and unlike a canonical it is an instruction rather than a hint.

The critical rule: the page must remain crawlable. If it is blocked in robots.txt, the directive is never read, and the page can stay indexed indefinitely.

What to know

Two delivery methods
A meta robots tag in the HTML, or an X-Robots-Tag HTTP header for non-HTML files.
Must be crawlable
Blocking the URL prevents the directive being seen.
Common uses
Thank-you pages, internal search results, thin tag archives, staging environments.
Takes time
The page must be recrawled before it drops out.

Why it matters

Noindex is the correct tool for keeping low-value pages out of the index, which matters because a large volume of thin pages influences how a whole site is judged. It is also the most common thing left switched on by accident after a launch.

Common mistakes

×Combining noindex with a robots.txt disallow, so neither works.
×Leaving staging noindex tags in place on the live site.
×Using noindex on pages that should have been redirected instead.
×Expecting immediate removal rather than waiting for a recrawl.

FAQs

How long does deindexing take?

Days to weeks, depending on how often the page is crawled.

Does noindex remove existing rankings?

Yes, once processed. That is the intended effect.

WRITTEN BY TARIQ SALLAM
Marketing Consultant. Entrepreneur. Content Creator.

I'm a marketing consultant, entrepreneur and content creator. I help businesses grow through practical marketing, websites, SEO, content and AI.

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