Should You Really Deindex Your Internal Search Results Pages?

Official statement

John Mueller explained on Twitter why Google requires internal search results pages from a website to be deindexed: they create infinite crawl spaces, are often low-quality pages, and frequently present pages empty of information (zero results for the search), which generate soft 404s.

Source : Search Engine Roundtable

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Official statement from August 14, 2017 (8 years ago)

⚠ A more recent statement exists on this topic Does Google Penalize Rare Languages in SEO? John Mueller · March 21, 2023 View statement →

What you need to understand

Results pages generated by a website's internal search engine pose three major problems for Google. They create infinite crawl spaces that exhaust the crawl budget allocated to your site.

These pages are generally considered low-quality content because they don't provide unique editorial value. They simply display results that exist elsewhere on the site.

The third problem concerns pages with no results (zero search results). These empty pages are detected as soft 404s by Google, which harms the overall quality of your indexation.

Internal search engines generate infinite crawling that wastes the exploration budget
Content is considered duplicate or low-quality
Pages without results create problematic soft 404s
Google explicitly recommends deindexing these pages

SEO Expert opinion

This recommendation is consistent with field observations. Sites that leave their internal search pages indexed often notice an inflation of indexed pages without any organic traffic gain.

However, beware of the gray zone mentioned: the boundary is blurry between an internal search page and a legitimate filtering page. On an e-commerce site, a page for "red shoes size 42" can be seen as a useful filter or as an internal search.

Point of vigilance: Category pages with filters (price, color, size) should not be treated as internal searches if they target real search intents. Analyze search volumes and user intent before deindexing.

The golden rule: if the page answers a potential query from a Google user with optimized and unique content, it deserves indexation. If it's randomly generated by a user search, it should be blocked.

Practical impact and recommendations

Block crawling of internal search URLs via robots.txt by identifying parameters (?s=, ?search=, ?q=, etc.)
Add a noindex tag on internal search results page templates
Use the URL parameters tool in Google Search Console to indicate parameters to ignore
Audit your filter and category pages to differentiate pages with SEO value from internal searches
Create a clear taxonomy: indexable categories vs. dynamic filters with noindex
Monitor soft 404s in Search Console to detect pages without results
Optimize real landing pages (categories, product pages) rather than relying on internal searches
Implement clean pagination on legitimate category pages with rel="next"/"prev" or canonicals

In summary: Deindexing internal search engines is a technical best practice that protects your crawl budget and the quality of your indexation.

Implementation, however, requires a detailed analysis of your architecture to avoid mistakenly deindexing pages with high SEO potential. This distinction between legitimate pages and parasitic pages requires in-depth expertise in your industry.

Given the complexity of these decisions and their direct impact on your visibility, support from a specialized SEO agency can prove valuable in establishing a customized indexation strategy, adapted to your site's specificities and your market.