Google no longer lists internal site search results pages as something publishers must block from its crawler, John Mueller said yesterday, reversing a written requirement that dated back to 2007, even as he continued to recommend the same blocking behavior for reasons that have nothing to do with search spam penalties.

The clarification arrived in episode 113 of Search Off the Record, the podcast produced by Google Search Central and hosted by Martin Splitt and John Mueller of the company's Search Relations team. Google published the episode today, July 31, 2026, titled "Should you block your Search result pages?" Search Engine Roundtable's Barry Schwartz first reported on the discussion today at 7:41 am, flagging the shift from Google's original webmaster guidelines to the modern Search Essentials framework.

What changed and what did not

Mueller's statement separates two things publishers have often treated as one: a documentation requirement and a technical recommendation. The requirement is gone. The recommendation remains.

"Back in the early days in our webmaster guidelines, when they existed as webmaster guidelines, I think we also listed search results pages as something that you have to block from Google," Mueller told Splitt during the episode. He continued: "And we listed it, I think, either as automatically generated content or something like these infinite spaces type things, because theoretically, it's an automatically generated content. It's also infinite space." He confirmed the historical instruction plainly: "And we recommended blocking those pages in the webmaster guidelines."

That instruction no longer appears in current policy documentation. "Nowadays, we don't have that listed in the search policies," Mueller said, "but it's still something that I think just purely for technical reasons makes sense. So it's not necessarily something where we would say, we think your site is spam if you allow your search results pages to be indexed." He summarized the consequence in one phrase: "It's just like, you're being very inefficient."

The distinction matters for how site owners should interpret the guidance. An indexed internal search page is no longer, by itself, a documented policy violation. It is, according to Mueller, an inefficiency - a framing he repeated later in the episode when he compared it to an absence of quality guidelines for calendar pages: "It's like, oh, you should not make your calendar accessible to the year 2099. If you do it's like whatever. But it's like up to you what you serve there."

Why Google still recommends blocking, even without a rule

Mueller and Splitt outlined two separate justifications for continuing to block internal search results pages via robots.txt or noindex directives, neither of which depends on a documented spam policy.

The first is what the two engineers called an infinite crawl space. Splitt framed the underlying mechanism at the top of the episode, asking Mueller whether there is "something on the technical side that I need to do if I have search result pages" on a website. Mueller's answer centered on how Googlebot discovers these pages in the first place. If a site has a search feature, and if anything links into that feature from elsewhere, "Google doesn't know that this is any kind of a special page, but rather it looks at that URL and says, martinsplitt.com/search/whatever-swiss-cheese. And then it goes off and tries to crawl your pages."

Depending on how the site structures its search results, filtering options for categories, alphabetical order, or date order can multiply the number of URLs that technically exist on a domain. Mueller described the scale problem directly: "You can imagine what happens when we see, I don't know, 100 million pages that are new from Martin Splitt; we'll go off and try to crawl those." The consequence, he said, lands on crawl budget and server load simultaneously. "Your server load, and your server's like, my gosh, this Googlebot is crawling infinitely. I am going to block it because who knows what they have planned."

Uncached search pages compound the strain. Mueller noted that "especially search pages tend to be something that are not cached," meaning that "every time someone accesses one of these search URLs, the system has to go off to the database and do a lookup and figure out like what is the best matching thing," followed by a full ranking pass to determine what gets shown and what snippet gets generated. Splitt agreed that inefficient search algorithms on a site "might actually cause your server quite some work and actually might make the site even slower for other people."

Google's crawling systems attempt to recognize the pattern once they encounter it, according to Mueller, deprioritizing what looks like an infinite space once detected. But he was clear about the limits of that automatic detection: "I don't think we have any information in Search Console where we tell you it's like, by the way, we found this and we fixed it for you." Detection can also be slow. "Maybe it takes a while for them to recognize that," he said, adding that the outcome for a given site owner depends heavily on hosting setup, ranging from unproblematic delay to a server going down.

The second reason: search pages as a spam vector

The episode's second justification concerns content rather than crawl load, and Mueller described it as the one place where blocking internal search actually intersects with quality and abuse concerns.

"There is one place where you could run into quality issues," Mueller said, "if you let people search for things that are totally irrelevant to your website, and your search results page includes those terms on those search results page and is indexable." He walked through a hypothetical using the episode's recurring example: a Swiss website without Swiss cheese content that nonetheless returns a results page when a visitor searches for "Swiss cheese photos," because the query terms get echoed into a page heading alongside whatever content the search mechanism does return.

Mueller extended the example toward the practical threat: "You could imagine casinos, pharmaceuticals, any kind of restricted content, any adult-related content. It could be suddenly like all of these long adult terms and then a phone number and then photos in the end. And your website basically has a page for these terms now with that phone number." The mechanism does not require an actual intrusion into the site's codebase. "It's not so much that someone has hacked your website to do this, because your website is doing that freely," he said, describing an indexable search feature that will render a page for literally any query string submitted to it, whether by a legitimate visitor or an automated abuse campaign.

Once that happens at scale, Mueller said, "we might flag that as hacked. So in Search Console, you might see that as something that is flagged as hacked." He described organized activity behind the pattern: actors who "try to recognize common CMSs that don't have their search results pages blocked, and go off and link to thousands of sites with millions of pages, all with maybe some adult terms and a phone number or pharmaceuticals and a phone number or something else and a Telegram address." The goal is not driving traffic to the victim site but exploiting its domain authority so spam contact information surfaces under a trusted name.

Google's systems can catch and suppress some of this after the fact. "It can also be that algorithmically we recognize that and say like, this is clearly content that doesn't belong on this website. We will try to block it," Mueller said. But he immediately qualified how much comfort that offers: "Maybe Google only took care of part of the problem, part of these kind of problematic queries." Detection is not guaranteed to be fast, either. "It's also not guaranteed that we recognize it immediately. Maybe it takes a month," he said, describing a scenario where a regular site visitor discovers the spam pages first, through a manual search, before Google's systems intervene.

Technical remedies: two paths, different trade-offs

Mueller and Splitt laid out two accepted methods for preventing the infinite-space and spam-vector problems, along with the mechanics that separate them.

The first is a robots.txt disallow rule, which Mueller called the easier option. "It has clean categories. It has maybe a sitemap file, maybe an HTML sitemap, maybe an LLMs text," he said of a well-structured site, before recommending that publishers "just use robots.txt and say everything in search is blocked." He noted this approach works across common content management systems: "If you're using WordPress or Drupal or Joomla or whatever else is out there nowadays, you can easily usually edit your robots.txt file."

The second is a noindex directive, delivered either through an HTTP header or a robots meta tag. Mueller described the functional difference precisely: robots.txt prevents Googlebot from fetching the page at all, while noindex allows a single crawl before the crawler learns to stop. "It's like I might find a bunch of these, but I'm not going to crawl infinitely through this pile of pages," he said, describing how Google's scheduling systems learn to treat noindex-tagged batches differently once the pattern is established. He acknowledged the trade-off explicitly later in the episode: noindex avoids one edge case, a robots.txt-blocked URL appearing bare in search results without a title or snippet, but it does not stop the crawl itself the way a disallow rule does. "With a noindex though, I was like, we would still crawl the page. So it's pros and cons," he said.

Mueller was specific about how broad a robots.txt rule should be. Rather than attempting to enumerate every possible search query pattern, he advised a single wide rule: "If you have something like /search?q=whatever for the different queries, I would just block /search/?. And that way you're not blocking things like search-for-cheese.php, but rather like anything that is just in this slash search and then that follows with some kind of URL parameter." His reasoning was maintainability. "If you have one clean rule that covers the whole pattern, then it's easier to maintain. It's easier to recognize which rule applies," he said, contrasting that with sites whose robots.txt files have grown into what he called "a labyrinth of text."

Two remedies Google explicitly warns against

The episode also addressed two common site-owner responses to runaway search-page crawling, both of which Mueller identified as ineffective or actively harmful.

The first is the Search Console removal tool. Mueller acknowledged the intuitive appeal: "It feels or it could feel like noindex and removal tool is kind of the same thing." The mechanism differs. "The removal tool basically filters it out in the search results pages. It doesn't prevent crawling," he said, noting it "will hide them in search, which is maybe okay, but it won't prevent crawl." Splitt summarized the shortfall: "It doesn't solve the actual issue, right? It just hides the symptom." Mueller agreed, warning it can create a false sense of resolution for a stakeholder who is "paying attention and seeing this" and might conclude "it's fixed if you hide it like this."

The second is serving a 500 server error code on search URLs, an approach Mueller ruled out unequivocally. "What you definitely shouldn't do is serve something like a 500 result code," he said, since "our systems will recognize this and say, like, oh, we tried to crawl and the server basically broke, which means maybe we're crawling too much." The consequence extends beyond the search pages themselves: Google's crawler "will reduce crawling overall" for the entire site, "including all of the pages that are not in your search results pages." A 404 response is comparatively less damaging but still imperfect, since some users can encounter caching issues.

The category-page exception

One structural nuance concerns content management systems that repurpose search functionality to power category or tag pages. Mueller cited Blogger by name. "I've seen some CMSs in particular. Blogger does this," he said, describing how clicking a blog category label triggers what is functionally a search query rather than a standalone page.

Mueller distinguished this case from the general blocking recommendation because category pages carry structural value a raw search page does not. "Category pages in general are very valuable," he said. "They make it a lot easier for search engines to crawl a website, to understand the context within a website." He suggested publishers on such systems look for a URL pattern separating true search results from category navigation, so the former can be blocked while the latter stays crawlable. Absent that separation, he recommended building dedicated category pages instead, since a purpose-built page "could provide more context" about why a term matters and which pages best serve it.

A rare admission of uncertainty about legitimate exceptions

Both hosts acknowledged, without fully resolving, that some publishers may have legitimate reasons to keep search results indexed. Splitt raised the possibility directly: "If you have a good reason for having your search result pages in the index, let us know in the comments. Because I besides the scenario, it's interesting." Mueller did not offer a counterexample during the episode, leaving the question open to listeners rather than asserting that no such use case exists.

Context for search and advertising professionals

The distinction Mueller drew, between a documented policy violation and a technical inefficiency, matters for teams managing crawl budget, site health, and paid media landing pages. Google reduced Googlebot's maximum file size per resource from 15MB to 2MB, an 86.7 percent decrease, according to Google slashes web crawl limit by 86.7% as cost pressures mount, reported in February 2026. A later episode of Search Off the Record, covered in Googlebot is not a program - Google engineers finally explain what it really is, showed the crawler operates as one client among many calling a shared internal platform, with automatic throttling built to stop any single team from overwhelming an external server. That architecture explains why Mueller frames uncached search pages as a server-load problem rather than an indexing one: an overloaded server signals the infrastructure to pull back, regardless of policy.

The spam-vector portion of the episode connects to a pattern PPC Land tracked separately. Google's hacked-content classification system, discussed in Google starts sending Search Console warnings for back button hijacking, shows the company formalizing enforcement against manipulative site behavior throughout 2026, including an April spam policy update and June enforcement. Mueller's description of casino and pharmaceutical terms triggering a hacked-site flag inside Search Console sits within that same architecture, even without being framed as new policy in the episode.

For commerce and classifieds sites, the crawl-efficiency argument overlaps with faceted navigation, a related source of URL proliferation. Managing faceted navigation URLs: new Google documentation outlined Google's requirements for filtered, parameterized pages that need to stay indexed, including consistent parameter ordering and canonical signals, mirroring the infinite-space concern Mueller raised.

Mueller's caution against relying on Google's systems to "fix it for me" echoes Google's expiry tag forces a re-crawl, and it won't fix 50% of 404 hits, which documented a gap between what a Google directive promises and what its crawling systems do in practice. Proactive server-side configuration, rather than dependence on automated recognition, remains the more reliable path across both cases.

Timeline

Summary

Who: John Mueller and Martin Splitt, both members of Google's Search Relations team, speaking in episode 113 of the Search Off the Record podcast.

What: Mueller confirmed that blocking internal search results pages from Google's crawler is no longer a listed requirement in Google Search Essentials, reversing a rule that first appeared in Google's 2007 webmaster guidelines. He continued to recommend blocking these pages for two technical reasons unrelated to that former rule: the risk of Googlebot treating a site's search feature as an infinite crawl space that strains crawl budget and server load, and the risk of indexable search pages becoming a vector for spam content that can trigger a hacked-site flag in Search Console.

When: Google published the episode today, July 31, 2026. Search Engine Roundtable's Barry Schwartz published the first written report on the discussion the same day, at 7:41 am.

Where: The episode was published on the Google Search Central YouTube channel and accompanying podcast platforms, with an accompanying written summary on the official Search Off the Record podcast page.

Why: The clarification matters for search and advertising professionals because it separates a documentation change from an unchanged technical reality. Site owners no longer risk a spam classification for indexed search pages, but the underlying crawl-budget and server-load consequences Mueller described remain fully in effect, and the spam-vector risk he outlined, casino, pharmaceutical, and adult-content terms appearing on indexable search pages, continues to trigger hacked-site flags regardless of whether a formal policy names the practice.