Google Algorithm Updates & Changes: A Complete History – Search Engine Journal

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Whether you’re a seasoned SEO professional, a budding content creator, or anyone in between, this webinar will help you weather the changes in Google’s algorithms and capitalize on them for sustained success.
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Whether you’re a seasoned SEO professional, a budding content creator, or anyone in between, this webinar will help you weather the changes in Google’s algorithms and capitalize on them for sustained success.
Below we have compiled a full list of Google algorithm launches, updates, and refreshes that have rolled out over the years, as well as links to resources for SEO professionals who want to understand each of these changes.
Google’s algorithms are a complex system used to retrieve data from its search index and instantly deliver the best possible results for a query. The search engine uses a combination of algorithms and numerous ranking factors to deliver webpages ranked by relevance on its search engine results pages (SERPs).
In its early years, Google only made a handful of updates to its algorithms. Now, Google makes thousands of changes every year.
Most of these updates are so slight that they go completely unnoticed. However, on occasion, the search engine rolls out major algorithmic updates that significantly impact the SERPs such as:
Below, we have compiled a comprehensive list of Google algorithm updates sorted by their release dates.
Google introduces AI-generated summaries (previously known as SGE) to U.S. search results, utilizing the new Gemini model designed specifically for search.
Google Rolls Out AI-Powered Overviews To US Search Results
Google’s AI Overviews Documentation: Key SEO Insights
Google’s SearchLiaison confirmed that Google’s site reputation abuse update started on Monday May 6th with manual actions to be followed as some point in the future with algorithmic ones.
Google: Site Reputation Abuse Manual Actions
Big Brands Apparently Receive Site Abuse Manual Actions
Google’s March 2024 Core Update addresses low-quality content and introduces new policies on spam to combat manipulative practices.
It began on March 5 and was completed on April 19, taking 45 days to roll out. The completion of the update wasn’t announced until April 26.
 
Google March 2024 Core Update: Reducing “Unhelpful” Content By 40%
Google March 2024 Update: 4 Changes To Link Signal
Google March 2024 Update: 6 Insights On Manual Actions
Google’s March 2024 Core Update deindexes hundreds of websites
Google’s Algorithm Hates AI Content? How To Make Google Love It
Google Completes March Spam Update, Core Update Continues
AI Spam Sites Beat Google’s March 2024 Spam Update
Google: When To Fix Sites Hit By March 2024 Core Update
Google March 2024 Core Update Officially Completed A Week Ago
Google announced an algorithm update targeting review content on a page-level basis. It began on November 8 and completed on December 7.
Google Rolls Out November 2023 Reviews Update
Google Reviews Update Finished – What To Know
Google announced a core algorithm update, which began on November 2 and was completed on November 28. To learn more about core updates, see the Google Search Central Blog.
Google Rolls Out November 2023 Core Update
Google announced a core algorithm update, which began on October 5 and was completed on October 19. To learn more about core updates, see the Google Search Central Blog.
Google Launches October 2023 Core Algorithm Update
Google’s October 2023 Core Update Now Complete
Google Fixes Discover Traffic Bug Caused By October Core Update
Google announced the launch of the October 2023 Spam Update, which began on October 4 and was completed on October 19. This update applies globally and improves coverage in many languages,
Google Rolls Out October 2023 Spam Update
Google’s Webspam Report Explains Role Of SpamBrain
Google Completes Rollout of October 2023 Spam Update
Google announced the launch of the September 2023 Helpful Content Update, which began on September 14 and was completed on September 28. Site owners who want to learn more about helpful content updates can find more information on the Google Search Central Blog.
Google September 2023 Helpful Content Update – Changes To The Algorithm
Google Concludes Rollout Of September 2023 Helpful Content Update
Google’s Mueller Outlines Path To Recovery For Sites Hit By Core Update
Google announced a core algorithm update, which began on August 22 and concluded on September 7. To learn more about core updates, see the Google Search Central Blog.
Google Launches August 2023 Core Update
Google announced an algorithm update targeting review content on a page-level basis. It began on April 12 and finished rolling out on April 25. To learn more about core updates, see the Google Search Central Blog.
Google April 2023 Reviews Update Focuses Heavily On Experience
Google announced a core algorithm update, which began on March 15 and finished rolling out on March 28. To learn more about core updates, see the Google Search Central Blog.
Google Rolls Out March 2023 Core Algorithm Update
Google announced the launch of the February 2023 Product Reviews Update, which began on February 21 and was completed on March 18. The update applies to these languages globally: English, Spanish, German, French, Italian, Vietnamese, Indonesian, Russian, Dutch, Portuguese, and Polish. See the Google Search Central Blog to learn more about the product review system.
Google February 2023 Product Reviews Update
Google Clarifies Product Review Best Practices
Analyzing The Google February 2023 Product Review Update
Google announced the launch of the December 2022 Link Spam Update, which began on December 14 and was completed on January 12. With this update, Google is leveraging the power of “SpamBrain” to neutralize the impact of unnatural links on search results. To learn more about SpamBrain, see the Google Search Central Blog.
Google December 2022 Link Spam Update Rolling Out Now
Four Takeaways from Google’s Updated Link Guidance
Google announced the launch of the December 2022 Helpful Content Update, which began on December 5 and was completed on January 12. Site owners who want to learn more about helpful content updates can find more information on the Google Search Central Blog.
Google Announces December 2022 Helpful Content Update
Google Updates Guidance On Helpful Content System
Google announced a spam update, which began rolling out on October 19 and was completed on October 21. Site owners who want to learn more about spam updates can find more information on the Google Search Central Blog.
Google Announces October 2022 Spam Update
Google confirmed the rollout of a new product review algorithm update on September 20 and was completed on September 26. Although they did not offer advice for site owners for this particular update, they shared a post on product review updates in 2021 for more information.
Google September 2022 Product Review Algorithm Update Rolling Out Now
Google Core & Product Review Updates Finish Rolling Out
Google announced a core algorithm update, which began rolling out on September 12 and was completed on September 26. Site owners who want to learn more about core updates can find more information on the Google Search Central Blog.
Google Announces September 2022 Core Algorithm Update
Google Core & Product Review Updates Finish Rolling Out
Google announced the launch of the Helpful Content Update, which began on August 25th. Content creators can learn more about how to create content for people first on the Search Central blog.
Google ‘Helpful Content’ Algorithm Update Launching Soon
Google’s Helpful Content Update Rolls Out: 7 Things To Know
Google research paper describes an algorithm that detects low quality pages
Google announced the release of the July 2022 Product Reviews Update on July 27th, which was completed on August 2nd. Ecommerce marketers can refer to Google Search Central’s documentation on how to write high-quality product reviews for more information.
Google July 2022 Product Review Algorithm Update Rolling Out Now
Google announced via Twitter the release of a broad core update, named the May 2022 Core Update. This is part of a series of updates Google makes to the overall ranking process throughout the year. This update began on May 22, 2022, and was completed on June 9, 2022.
Google Launching May 2022 Broad Core Algorithm Update
Google May 2022 Core Update Complete
Google announced via the Search Central Blog an update to product review rankings that would enable them to identify high-quality reviews.  The update should take a few weeks to complete.
You can learn more about the quest to provide better product reviews to search users on The Keyword and get Google’s advice on how to write high-quality product reviews.
New Google Algorithm Update Aimed At Product Reviews
Google announced via Twitter that the page experience update is slowly rolling out for desktop search, expected to be completed in March 2022. Google offers developers more information about the page experience update on Google Search Central.
Google Page Experience Update Starts Rolling Out On Desktop
Google Page Experience Update – Desktop Rollout Complete
Google announced via the Google Search Central Twitter account that the December 2021 Product Review Update began rolling out for English language pages today, and is estimated to take three weeks to complete. They shared a link to a blog post on product review updates and your website for more information.
Google December 2021 Product Review Update
Google announced via Twitter a November 2021 Local Search Update that began on November 30th and was completed on December 8th. Google also suggested that businesses review their guidance on how to improve local rankings.
Google Confirms Update To Local Search Results
Google Search Central announced via Twitter that a broad core update would be released later that day. They referred webmasters to their documentation on what site owners need to know about core updates, last updated in August 2019.
Google Launching November 2021 Broad Core Algorithm Update
Google November Core Update Is Over – What Happened?
According to a tweet from Google Search Liasion, a spam update was rolled out from November 3 – 11, 2021 as a part of their regular work to improve search results. They suggested in their announcement that webmasters should continue following Webmaster Guidelines.
Google Spam Update Done Rolling Out
Google announced an algorithm update aimed at identifying and nullifying link spam was beginning to roll out. Google warned that any sites taking part in link spam tactics could see ranking changes – with sponsored, guest, and affiliate content most likely to be impacted. Google said the update should be fully rolled out in “at least” two weeks and will impact multiple languages.
Google Link Spam Algorithm Update Rolling Out on July 26
Google’s Link Spam Update Is Complete
Google Search Liaison confirmed via Twitter that the July 2021 Core Update rollout was effectively completed on July 12th. No additional details were provided.
Google July 2021 Update is Over – What Happened?
Google Search Liaison announced via Twitter the July 2021 Core Update is rolling out and will take one to two weeks to complete. Google’s guidance for core updates can be found on the Google Search Central Blog.
Google July 2021 Core Update Begins Rolling Out
Google Search Liaison announced via Twitter that the second part of their spam update has begun on June 28th and will likely be completed on the same day. The original announcement referred to a post on the Google Search Central Blog, updated in April 2021, on how Google fought Search spam in 2020.
Google Announces Spam Update Part 2
Google’s Danny Sullivan announced via Twitter an algorithm update targeted at fighting spam was rolling out to search results. The rollout of the update was to be completed the same day. He added that a second spam update would follow within a week. Google revealed no specific details on what this update was targeting.
Google Rolls Out New Spam Algorithm Update
Google confirms its long-awaited Page Experience update has started rolling out. Sites should not expect to see drastic changes as a result of this update, Google says, and any sudden drops or spikes should be mitigated by the gradual rollout process. The rollout will be completed by the end of August 2021.
Google Page Experience Update Begins Rolling Out
Google Page Experience Update Fully Rolled Out – This is Why it Matters
On June 10, Pandu Nayak,
Google Fellow and Vice President of Search, published a post on The Keyword blog. In it, he discussed Google’s work towards improving the algorithm to demote sites that “employ exploitative removals practices” and “predatory practices.” He also shared a link people can use to report online harassment.
Google Algorithm Update Targets Slander
Google Search Liaison Danny Sullivan announced via Twitter that a broad core algorithm update was about to be released. Sullivan also noted that some planned improvements weren’t quite ready for this update, so the parts that weren’t ready will be rolled out as part of second, related broad core algorithm update, scheduled for July.
Google Broad Core Algorithm Update Rolling Out June 2, 2021
This new search ranking algorithm update was designed to reward “product reviews that share in-depth research, rather than thin content that simply summarizes a bunch of products.” In their announcement, Google also shared nine useful questions to consider when creating and publishing product reviews.
Google Product Reviews Update Goes Live in Search Results
Google’s Product Reviews Algorithm Update: Winners & Losers
Google’s Public Liaison for Search, Danny Sullivan, announced via Twitter that Passage Ranking officially launched for English-language queries in the United States. According to Google: “This change doesn’t mean we’re indexing individual passages independently of pages. We’re still indexing pages and considering info about entire pages for ranking. But now we can also consider passages from pages as an additional ranking factor….”
What Is Google Passage Ranking: 16 Key Points You Should Know
Google confirms a core algorithm update, the December 2020 Core Update, is rolled out on December 3, 2020. This is the third core algorithm update of the calendar year. A fair amount of time has passed since the last core update, compared to the average time between these types of updates.
Read more about this update below.
What Is a Google Broad Core Algorithm Update?
Google on Broad Core Algorithm Update Recovery – 4 Takeaways
Recovering from a Google Core Algorithm Update with Lily Ray [PODCAST]
Google Confirms Rollout of Core Algorithm Update
Google December 2020 Core Update Insights
Google Search Liaison Danny Sullivan announced via Twitter that Google would be releasing a broad core algorithm update. About 90 minutes later, he announced the update was underway and would take 1-2 weeks to completely roll out.
Google Confirms May 2020 Core Algorithm Update Rolling Out Today
Google’s Danny Sullivan confirmed via Twitter that webpages in a featured snippet position will no longer be repeated in regular Page 1 organic listings. This change affected 100% of all search listings, worldwide.
Google: Webpages with Featured Snippets Won’t Appear Twice on Page 1
Google Offers Guidance on Featured Snippets Update
Google’s Featured Snippet Changes & Impact on Organic Traffic [STUDY]
Unpacking the CausalImpact of Google’s Double-Dipping Featured Snippet Update
Google’s Danny Sullivan announced via a tweet that a broad core algorithm update was about to be released. Google again provided the same guidance as for all other recent broad core algorithm updates.
Google January 2020 Core Update is Rolling Out Imminently
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