Google Algorithm Updates

A broad core update focused on improving how Google evaluates content quality, relevance, and user experience. Strong emphasis was placed on E-E-A-T signals, better detection of low-value or overly automated AI content, and improved alignment with search intent, leading to widespread ranking volatility.

A Discover-specific update aimed at improving the quality of content shown in Google Discover feeds. Favoured authoritative publishers and local expertise, while reducing the visibility of clickbait-style or low-value content in personalised feed results.

A broad core update focused on refining how Google ranks content based on relevance and quality. Compared to earlier updates in the year, volatility was relatively moderate, with incremental adjustments to rankings rather than large-scale reshuffling.

Targeted a range of spam behaviours including scaled content abuse, link manipulation, and low-value pages. The update applied more granular demotions than previous spam updates, often impacting specific sections of a site rather than the domain as a whole.

A broad core update affecting rankings across all verticals. Focused on improving how Google evaluates content relevance and usefulness, with some sites reporting partial recoveries from earlier helpful content-related losses.

A broad core update affecting rankings across all verticals. Google indicated it continued work on surfacing more useful, reliable results from a diverse range of sources - with further refinements to how it assesses content quality and page experience signals.

One of the most extended core rollouts of the year, taking nearly four weeks to complete. It targeted improvements to how Google ranks content across the web, with particular sensitivity to sites that had seen volatility following earlier 2024 updates. Some sites that lost visibility in March 2024 saw partial recovery.

A significant core update that reversed some of the more aggressive penalties applied by the March 2024 update, particularly for smaller independent publishers and niche sites. Google acknowledged feedback from the SEO community and made adjustments to better reward original, helpful content from non-mainstream sources.

Targeted a range of spam behaviours including AI-generated content at scale, site reputation abuse (third-party content published on trusted domains to exploit their authority), and expired domain abuse where old domains were repurposed with low-quality content to inherit historical link equity.

Launched in parallel with the March core update, this spam-focused rollout tackled scaled content abuse, expired domain abuse, and site reputation abuse. It led to significant manual actions and algorithmic penalties against sites using AI to mass-produce low-quality content purely for search traffic.

One of the most consequential updates in recent years, rolling out over 45 days. It formally incorporated the Helpful Content System into the core algorithm rather than treating it as a separate signal, meaning unhelpful content assessments now had a deeper impact. Google estimated it would reduce low-quality, unoriginal search results by around 40%. Many affiliate, programmatic, and AI-assisted content sites saw significant ranking losses.

A broad global core update that caused notable volatility across multiple sectors. It continued the trend of rewarding sites demonstrating genuine E-E-A-T (Experience, Expertise, Authoritativeness, and Trust) and deprioritising content that lacked depth or clear authorial expertise. News, health, and finance verticals were among the most visibly affected.

Released shortly after the October spam update, this core update focused on improving overall result quality and relevance. It produced significant ranking volatility across retail, local, and informational queries, with many SEOs noting that sites with stronger brand signals and consistent publishing histories performed better.

The third iteration of the Helpful Content Update introduced more nuanced classification of content quality, with a stronger emphasis on first-hand experience and original insight. Sites relying heavily on templated or aggregated content - even if technically accurate - were more likely to see reduced visibility. Google also updated its guidance to stress that content should be written for people, not to satisfy search engine patterns.

A broad core update that overlapped with the September Helpful Content Update rollout, creating complex ranking volatility that was difficult to attribute to a single cause. The update continued to refine how Google values expertise and trustworthiness, with particular impact on health, legal, and financial content that lacked clear author credentials.

The fifth major product reviews update, which expanded its scope beyond individual product reviews to also evaluate service reviews and broader recommendation-style content. It rewarded content that demonstrated genuine testing and hands-on experience, with specific evidence and original media - and penalised thin aggregator-style reviews lacking unique insight.

A broad core update affecting rankings across all regions and industries. Sites that had previously been negatively impacted by the August 2022 Helpful Content Update saw mixed results, with some partial recoveries and some further declines. The update reinforced Google's focus on content that satisfies user intent rather than simply matching keyword patterns.

An extended rollout of the product reviews system, taking nearly four weeks to complete. It further refined how Google evaluates the quality and authenticity of product reviews, giving more weight to content that provided unique value - such as original photography, detailed comparisons, and disclosure of testing methodology - over content that summarised manufacturer specs.

A significant link-focused update rolling SpamBrain - Google's AI-based spam-prevention system - into link evaluation at scale. It targeted sites that had artificially inflated their link profiles through paid links, link exchanges, or large-scale link schemes. Unlike previous link updates, it also targeted sites that were buying links to pass PageRank to others, not just those purchasing links for their own benefit.

A global spam update using SpamBrain to improve detection of sites engaging in low-quality and deceptive practices. It targeted auto-generated content, hacked sites, scraped content, and other manipulation techniques across multiple languages and regions. Impact was particularly notable in non-English-language markets.

A broad core update that produced some of the highest volatility levels seen that year, affecting rankings across most verticals. It followed closely on the heels of the August Helpful Content Update, and together the two updates significantly altered the competitive landscape - particularly for content-heavy sites in health, finance, and lifestyle niches.

The first Helpful Content Update introduced a new sitewide signal designed to identify content created primarily to rank in search rather than to genuinely help users. Unlike most updates, it applied a sitewide classifier - meaning a high volume of unhelpful content anywhere on a site could suppress the entire domain's rankings, not just individual pages. Content farms, SEO-first affiliate sites, and thin informational sites were most affected.

A significant broad core update with above-average ranking volatility, particularly in health, travel, and finance verticals. Google reaffirmed that no specific fix guarantees recovery from a core update - the focus should be on genuinely improving overall content quality. Sites that had suffered losses in previous core updates saw mixed results: some recovered, many did not.

The second product reviews update refined and expanded the criteria introduced in April 2021, with additional guidance on what makes a high-quality product review. It placed greater emphasis on expert knowledge, evidence of product use, comparison to alternatives, and unique insights not available elsewhere - continuing the push away from thin, template-driven affiliate content.

A broad core update completing shortly before the holiday shopping season. It caused significant volatility across e-commerce and retail sectors, as well as in news and health. The update appeared to continue fine-tuning how Google assesses E-A-T signals and the overall quality and trustworthiness of content, building on patterns established in earlier 2021 updates.

A targeted spam update deployed globally in two phases. It specifically tackled link spam and other manipulation techniques designed to boost rankings artificially. The update built on the same AI-driven spam-detection infrastructure that underpinned earlier spam updates, with improved accuracy in identifying unnatural link patterns at scale.

Released just weeks after the June core update - an unusually short gap - suggesting Google had held back part of the update it intended to release in June. Together, the two July updates produced substantial volatility across most content categories. Health, finance, and travel sectors saw notable shifts, and sites that had struggled after the June update experienced further movement.

Google announced this update in advance - one of the first times it signposted a major core rollout beforehand. It was the first core update of 2021 and produced significant volatility, particularly across YMYL (Your Money or Your Life) categories. Google noted that part of the planned update had been delayed due to quality concerns and would be released in July.

The first dedicated product reviews update, targeting content that simply repeated manufacturer descriptions or aggregated existing information without adding genuine value. Google rewarded in-depth, expert reviews that demonstrated real-world product use, discussed pros and cons honestly, and provided information not available elsewhere. Thin affiliate sites producing cookie-cutter review content were most negatively affected.

The final broad core update of 2020, arriving during the peak pre-Christmas period. It produced some of the highest volatility levels of the year, affecting rankings across virtually all content categories. Sites in health and news saw particularly strong shifts, and the update was widely considered one of the most impactful of 2020, with many sites experiencing the reversals or accelerations of trends set earlier in the year.

Released mid-pandemic, this broad core update caused significant ranking volatility across most sectors. Health, news, and e-commerce were especially affected. It continued Google's pattern of rewarding content that demonstrates genuine expertise and trustworthiness, with YMYL sites scrutinised most heavily. Some sites that had been negatively impacted by the January 2020 update saw partial recovery.

The first broad core update of 2020 caused significant ranking volatility across news, health, and entertainment verticals. It continued the trend of prioritising E-A-T signals and penalising content that lacked demonstrable expertise or trustworthiness. A number of health and medical information sites saw substantial drops, while authoritative publishers with strong brand signals generally held firm or improved.