History of Google Algorithm Updates
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.
Read more updatesWhat are Google Algorithms?
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.
Updated:
December 2024 Spam Update
Google launches its December spam update, set to finish within a week, marking the end of a year filled with strong anti-spam efforts.
December 2024 Spam Update
The December 2024 spam update was started on December 19 and is expected to be completed in one week.
December 2024 Core Update
The December 2024 core update started on December 12 and finished rolling out on December 18.
Site Reputation Abuse (SRA)
Google has updated its site reputation abuse policy, introduced earlier this year, to tackle ‘parasite SEO’—a tactic where websites use established domains to manipulate search rankings through third-party content. While enforcement is currently handled manually, Google plans to introduce algorithmic updates to automate detection and demotion in the future.
Google Site Reputation Abuse Penalties Hit Major Publishers ⇾
November 2024 Core Update
Google’s November 2024 core update began on November 11 and concluded on December 5, taking three weeks to complete.
Google Rolls Out November 2024 Core Algorithm Update ⇾
Google November Core Update: 6 Insights From Millions of Queries ⇾
November 2024 Core Update
Google released the November 2024 core update on November 11. The rollout may take up to two weeks to complete.
August 2024 Core Update
Google’s August 2024 core update aims to promote high-quality content while demoting low-value SEO content. The update started rolling out on August 15. The rollout was complete as of September 3, 2024.
Google Rolls Out August 2024 Core Update ⇾
Google’s Mueller On August Core Update vs. Ranking Bug Effects ⇾
Google Confirms AI Overviews Affected By Core Updates ⇾
Explicit Fake Content Update
Update to Google’s search algorithm to address non-consensual explicit content, specifically targeting artificially generated images and videos known as ‘deepfakes.’
Google Search Algorithm Update Targeting Explicit Deepfakes ⇾
June 2024 Spam Update
Google has started implementing the June 2024 spam update, which is expected to take a week to finish.
AI Overviews
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 ⇾
Site Reputation Abuse
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.
March 2024 Core Update
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 ⇾
November 2023 Reviews Update
Google announced an algorithm update targeting review content on a page-level basis. It began on November 8 and completed on December 7.
November 2023 Core Update
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.
October 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 ⇾
October 2023 Spam 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 ⇾
September 2023 Helpful Content 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 ⇾
August 2023 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.
April 2023 Reviews 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 ⇾
March 2023 Core Update
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.
February 2023 Product Reviews 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 ⇾
December 2022 Link Spam 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.
December 2022 Helpful Content Update
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.
October 2022 Spam Update
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.
Product Review Algorithm 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 ⇾
Core Algorithm Update
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.
Helpful Content Update
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 ⇾
July 2022 Product Reviews Update
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 ⇾
May 2022 Core Update
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.
March 2022 Product Algorithm Update
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.
Page Experience Update
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 ⇾
December 2021 Product Review Update
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.
Broad Core Update
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 Spam Update
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 Link Spam Algorithm Update
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.
July 2021 Core Update Completed
Google Search Liaison confirmed via Twitter that the July 2021 Core Update rollout was effectively completed on July 12th. No additional details were provided.
Spam Update Part 2
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.
June 2021 Spam Update
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.