← Suraj Shrivastava
Suraj Shrivastava / algorithm timeline

The algorithm, mapped to its patents

A living map of how Google ranks. Up top, the landmark algorithms matched to the public patents behind them — each links to Google Patents. Below, every ranking update Google has officially confirmed, synced automatically from its status dashboard.

Landmark algorithms & their patents

The named updates that reshaped search — each mapped to the public patent behind it.

2001
2011
2012
2013
2015
2019
2020
2021
2022
2023

Patent links go to Google Patents. The update→patent mapping follows the public SEO-patent research tradition (notably Bill Slawski’s work); confirmed pairings and research-lineage ones are labelled separately above.

Confirmed updates — live from Google

Every ranking update Google has officially confirmed, synced from the Search Status Dashboard. · last synced 22 Oct 2026

Sept 2026
September 2026 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Aug 2026
August 2026 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Jun 2026
June 2026 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
May 2026
May 2026 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Mar 2026
March 2026 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Mar 2026
March 2026 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Feb 2026
February 2026 Discover update Discover update

A Discover update — changes to how content is surfaced in the Google Discover feed.

Google’s note ↗
Dec 2025
December 2025 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Aug 2025
August 2025 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Jun 2025
June 2025 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Mar 2025
March 2025 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Dec 2024
December 2024 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Dec 2024
December 2024 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Nov 2024
November 2024 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Aug 2024
August 2024 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Jun 2024
June 2024 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Mar 2024
March 2024 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Mar 2024
March 2024 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Nov 2023
November 2023 reviews update Reviews update

A reviews update — rewards original, first-hand review content (products, services, destinations) over shallow summaries.

Google’s note ↗
Nov 2023
November 2023 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Oct 2023
October 2023 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Oct 2023
October 2023 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Sept 2023
September 2023 helpful content update Helpful content update

A helpful content update — a sitewide signal favoring content written for people over content made mainly to rank.

Google’s note ↗
Aug 2023
August 2023 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Apr 2023
April 2023 reviews update Reviews update

A reviews update — rewards original, first-hand review content (products, services, destinations) over shallow summaries.

Google’s note ↗
Mar 2023
March 2023 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Feb 2023
February 2023 product reviews update Product reviews update

A product reviews update — rewards in-depth, first-hand product reviews over thin, templated roundups.

Google’s note ↗
Dec 2022
December 2022 link spam update Link spam update

A link spam update — neutralizes unnatural, manipulative links so they pass no ranking value.

Google’s note ↗
Dec 2022
December 2022 helpful content update Helpful content update

A helpful content update — a sitewide signal favoring content written for people over content made mainly to rank.

Google’s note ↗
Oct 2022
October 2022 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗
Sept 2022
September 2022 product reviews update Product reviews update

A product reviews update — rewards in-depth, first-hand product reviews over thin, templated roundups.

Google’s note ↗
Sept 2022
September 2022 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Aug 2022
August 2022 helpful content update Helpful content update

A helpful content update — a sitewide signal favoring content written for people over content made mainly to rank.

Google’s note ↗
Jul 2022
July 2022 product reviews update Product reviews update

A product reviews update — rewards in-depth, first-hand product reviews over thin, templated roundups.

Google’s note ↗
May 2022
May 2022 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Mar 2022
March 2022 product reviews update Product reviews update

A product reviews update — rewards in-depth, first-hand product reviews over thin, templated roundups.

Google’s note ↗
Feb 2022
Page experience update for desktop Page experience update

A page experience update — factors loading, interactivity and visual stability (Core Web Vitals) into ranking.

Google’s note ↗
Dec 2021
December 2021 product reviews update Product reviews update

A product reviews update — rewards in-depth, first-hand product reviews over thin, templated roundups.

Google’s note ↗
Nov 2021
November 2021 core update Core update

A broad core update — Google’s periodic, site-wide reassessment of overall quality and relevance. No single fix; genuinely helpful content recovers over time.

Google’s note ↗
Nov 2021
November 2021 spam update Spam update

A spam update — improvements to Google’s spam-detection systems (SpamBrain), demoting sites that break the spam policies.

Google’s note ↗

Update names, dates and links come straight from Google’s official dashboard; the summaries are written here in plain English, grouped by update type. This list refreshes automatically each week.