What Is NoIndex? SEO Guide
The noindex tag is an HTML meta tag or HTTP header that instructs search engines not to index a page. It tells crawlers to remove the page from search results entirely.
The noindex tag is an HTML meta tag or HTTP header that instructs search engines not to index a page. It tells crawlers to remove the page from search results entirely.
Understanding the NoIndex Tag
The noindex tag is implemented using a meta tag: <meta name robots content noindex />. It can also be combined with nofollow. HTTP headers can also send this directive.
Unlike robots.txt blocking, noindex prevents a page from appearing in search results. This is essential for pages that should exist for users but not be indexed like contact pages, thank-you pages, or thin content.
Types of NoIndex Tag
Meta Tag
Noindex implemented via <meta name='robots' content='noindex' /> in the page <head>.
Example:
HTTP Header
Noindex implemented via X-Robots-Tag: noindex HTTP header, used for non-HTML resources like PDFs.
Example:
Why NoIndex Matters for SEO
Noindex provides precise control over which pages appear in search. Without it, thin content, duplicate pages, and low-value content could harm your site's overall quality score.
Best Practices
Use Canonical URLs for Thin Archives
For pagination, set canonical to the first page and noindex subsequent pages to prevent duplicate content issues.
Apply NoIndex to Login and Checkout Pages
These functional pages rarely add SEO value and can clutter your search results.
Common Mistakes
Failing to remove noindex when a page becomes valuable
Fix: Regularly audit for pages that started with noindex but now deserve ranking
How WPLink Helps With NoIndex Planning
WPLink identifies thin content and duplicate pages that may benefit from noindex tags, and can detect pages that should be removed from blocking.
Frequently Asked Questions
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