Google Reveals How Long Crawling, Indexing and Serving Take – ALM Corp

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Google has thrown some light on a long-standing question SEOs have about how long it takes for changes on their site to take effect in Google’s search results. Gary Illyes shared internal timing data for crawling, indexing and serving at a Google Search Central Live Deep Dive event in Europe last week, according to Search Engine Land.
The data covers a large set of processes, ranging from discovering new URLs to recovery from core algorithm updates. For each of these processes there’s a suggested average amount of time and a worst-case scenario. All the way from sitemaps, robots.txt and rendering to canonicalization, structured data, snippets, titles and more. It’s the first time that Google has shared such a data set publicly, in an official context (the live deep dive) and it can serve as a reference point for site owners when a client asks why a fix hasn’t kicked in yet.
The details first came out through John Campbell at We Are Roast. He posted up his notes of the third day and said it was the best session. French SEO Neil McCarthy also shared pictures of the slides and Barry Schwartz made a graphic of the numbers.
On each process there was a fastest time, a typical time and slowest time. All based on internal Google analysis. Illyes added one caveat. A lot of steps were intertwined so the delays stacked. A page can’t be indexed until it’s been crawled for example.
Illyes told Schwartz it was meant to see if the audience could relate to the numbers he pulled internally from Google. He didn’t get any negative reaction so it appeared fine.
Discovering a new URL normally takes about 20 hours, according to the slides. The slowest it can be is weeks, or never, but it’s rare. Refreshing a URL Google knows about takes longer still, typically around 30 days, and has the same weeks/never worst case scenario.
Sitemaps are processed in about 24 hours, though the slow tail can run to 14 days or never, and the slide puts that in context of quality, and a robots.txt change takes 24 hours also. Crawl demand updates normally take about 20 hours, but can take weeks or even months at the slow end.
Crawl capacity, on the other hand, has a much more variable tail. Typical update time for a crawl capacity change is 4 hours to a week or two, and a slow tail can be a week or two as well, in the case of recovery. Capacity can drop precipitously in seconds if Google decides to back off for whatever reason, say your server was having problems.
End to end indexing normally ranges from about one and a half hours if everything goes smoothly. The worst case scenario is months or even never if the quality is an issue. Rendering is different, it can take seconds to render but hours in the queue and days to weeks in the worst case.
Smaller signals have faster timelines than bigger ones. Meta annotations normally take between 45-90 minutes and up to one to four days in the worst case. Link annotations can be anywhere from minutes to three weeks and even up to months. Structured data updates take hours to two weeks and can go up to weeks or never if the quality is an issue. Images and videos usually take hours to days to update but can sometimes take weeks to months.
The bigger the change, the longer the timelines. Removals take between one to three weeks on average and up to months in the worst case. Canonicalization changes have similar timelines as removals, with the worst case being months when there’s a conflict between signals. Moves normally take one to three months and up to six months to a year or more in the worst case. According to the roundtable’s write up, a smaller move can be done within a few weeks.
Because of the sequential nature of the steps, the duration between them is critical to how far along the process each individual page is. Take a new page as an example. Discovery typically takes about 20 hours, and indexing the thing end to end about 1.5 hours. That allows a page to make its way into the index roughly within a day if all goes well. It’s back of the envelope math, not something Google presented, and the slow end of either step can derail everything. A page that’s stuck at discovery for weeks will never even make it to the indexing stage.
Serving refers to what searchers are seeing. Removing the URL from the Search Console as the website owner takes about two hours, on average, and up to 24 hours, in the worst case. The title and snippet updates typically become visible in one or two days, but it can take several weeks or months. Image appearances in the text results usually take one to two weeks.
Manual action removals take one to two weeks, on average, up to four to six weeks in the worst case, and much longer for sites that have been inactive for a while. Core update recovery is the longest one. On average, it takes three to six months, and the worst-case scenario is six months to a year, which means waiting for the next core update. According to the Roundtable report, core updates take two to four weeks to roll out, while spam updates take one or two days.
Schwartz pointed out one detail in the data that conflicts with one of the recent events. According to the slides, there is one to two days spam update rollout, which is considered normal. In fact, the September 2026 spam update was expected to take two weeks to become fully implemented.
He stated that there is another aspect that puzzles him, too. For changes falling under spam update, typical serving time is one to two weeks, constantly refreshed, while the slowest scenario has the updates refreshed in batches, with months of interval in between. The article does not disclose if Google had clarified the matter since.
Schwartz’s main point is that the timelines help understand what to expect after changes are deployed and that they are now derived directly from Google in an accessible format. Both are fair points. A change that did not appear in the search results after a day is not a problem since, according to the timelines, one day is usually too short. Most of the time, the update takes one or two days, so waiting for a week already puts the observer at the far end of the spectrum.
In particular, the data addresses the concerns about Google’s delays because the one-month period is actually an average. Therefore, if one URL is not updated after a month, there is a good reason to believe that either something is wrong with it or it was never supposed to be indexed. Other examples show why these concerns should not be overwhelming. For instance, the text mentions that the longest period without an update is “or never” which appears right after the section discusses quality issues. In other words, the quality of a page’s appearance in search results is now linked to how long it takes to update.
The slow end of the spectrum is the one that should be used as a benchmark when planning any operations around site changes. This is because migrations, on average, take between one and three months, according to Google. Therefore, talking about a month-long delay in the discovery of a site update within the first few weeks of its implementation does not provide much information. Similarly, canonical changes and URL removals take between one and three weeks, so a few-day delay after such operations are not worth worrying about.
These are Google’s internal numbers, according to Illyes, and that the exercise was to see whether the audience can relate to the numbers. Think of them as presentation numbers rather than an update to documentation. Schwartz also noted that the graphic he published was made with the help of AI, so it’s best to look at the slide photos for an exact number.
What stands out is that the gaps are large: On almost every row, the typical figure and the slowest figure are far apart, and the published figures don’t provide reason to believe that one site would land at the quick end while another is on the wait. Beyond naming quality for the slowest sites on a few of the slowest, nothing provides an explanation.
For now, the typical figures give a baseline, and the slow ones show how long to wait before concluding that something is wrong.
Q1: Who presented the crawling, indexing and serving data?
It was presented by Gary Illyes from Google in the Google Search Central Live Deep Dive event in Europe. Search Engine Land published the data on the October 5, 2026, with the help of notes by John Campbell at We Are Roast.
Q2: How long does Google take to discover a new URL?
The process normally takes 20 hours, while the slowest recorded time was weeks or never. As for refreshing a known URL, it takes approximately 30 days.
Q3: How long does indexing take?
Generally, the end to end process takes about 1.5 hours. However, the slowest time recorded was months or never, with quality noted as the reason. This is assuming all the critical processes are working correctly.
Q4: Do title and snippet updates show up quickly?
Yes, they normally appear quick, within a day or two. On the other hand, the slowest recorded time was several weeks or months. Moreover, images in text results typically take about a week or two before they start appearing.
Q5: How long does a site move take?
The process normally takes between one and three months. However, the slowest recorded time was between six months and a year or more. According to Roundtable, a small site move can be done in a few weeks.
Q6: How long does it take to recover from a core update?
The normal recovery period is between three and six months, while for the slowest case, it takes six months to a year. This is because the next core update is what determines the length of time websites remain affected. According to Roundtable, the rollout process takes between two and four weeks.
Q7: Does the September 2026 spam update match Google’s slide?
Not quite. The slide lists a one to two day rollout as typical, but that update was expected to take two weeks. Schwartz flagged the mismatch.
Q8: Why did Google share these numbers?
Illyes told Schwartz it was an exercise to see whether the audience could relate to the numbers Google pulled internally. He didn’t get any negative response.



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