Technical SEO
Noindex
Noindex is a directive, delivered in a meta tag or an HTTP header, telling search engines not to include a page in their index.
What is noindex?
Noindex is a directive, delivered in a meta tag or an HTTP header, telling search engines not to include a page in their index. The page remains accessible to users and its links are still followed unless nofollow is also specified.
Why anybody cares
It is the correct tool for pages that must exist for users but should not compete in search: thank-you pages, internal search results, thin generated pages awaiting enrichment.
How it is measured
Applied per page and reversible, which makes it safer than deletion. For it to work the crawler has to be able to fetch the page, so it must not also be blocked in robots.txt.
What people get wrong
Blocking a page in robots.txt does not noindex it. The crawler cannot read the directive it was blocked from fetching, and the URL can still be indexed from links.
If somebody uses this term to mean something else, it is worth asking which meaning.
Where this comes up in the work
It is part of Website Design and Development, and more specifically of CMS and content architecture. Across the rest of the work it shows up in:
- Brand and Creative, where getting it wrong shows up in checking contrast at the system level so it is settled once
- Generative Engine Optimization: it is the reason correcting the third-party records a model draws its brand facts from is scoped the way it is
- Answer Engine Optimization, where it is the difference between mapping how the category’s questions branch and answering the branches that convert working and appearing to
- Technical SEO, where it quietly limits how far fixing the layout shift caused by a font loading after the text can go
What to check
Two questions that establish whether this is actually in order on a given site:
- Whether the person who would notice a regression is looking at the right report
- Whether it is enforced by the build or maintained by discipline
Common questions
Where does noindex sit in the priority order?
High if it is actually broken, low if it is merely imperfect. The check tells you which.
How do you prove noindex is worth fixing?
It is the correct tool for pages that must exist for users but should not compete in search: thank-you pages, internal search results, thin generated pages awaiting enrichment. The evidence is specific to the site, which is why the check comes before the recommendation.
Is noindex just another name for something?
Blocking a page in robots.txt does not noindex it. The crawler cannot read the directive it was blocked from fetching, and the URL can still be indexed from links. Worth clarifying before agreeing to work on it.
Is noindex a ranking factor?
It is the correct tool for pages that must exist for users but should not compete in search: thank-you pages, internal search results, thin generated pages awaiting enrichment. Whether that becomes a ranking change depends on what else is true about the site, which is why it is worth measuring rather than assuming.
What tells you whether noindex is in order?
Applied per page and reversible, which makes it safer than deletion. For it to work the crawler has to be able to fetch the page, so it must not also be blocked in robots.txt. Anybody with access can establish it in an afternoon. How much should SEO cost? is the one people underestimate. How do we rank in the map pack? is the one they over-invest in.
Who should be responsible for noindex?
Usually whoever owns agentic commerce, because finding the variants an agent cannot distinguish and fixing the data depends on it. In practice it falls between teams often enough that naming an owner is half the fix. The cheapest version of this is in Analytics implementation. The one that lasts is in Answer Engine Optimization.
Let us look at where you actually stand
We will tell you if the answer is that you do not need us yet. That happens often enough to be worth saying out loud.