Google algorithm updates: What matters, and what to ignore

The second Core Update of 2026. A fast 12-day rollout, but many sites reported significant volatility already in the first weekend. The update felt larger than the March rollout.

What it hit: Broadly, across content types. Sites that partially bounced back after March saw new movement in both directions. E-E-A-T signals and first-hand experience continue to be weighted more heavily.

The first Core Update of 2026. A clean rollout of just over two weeks. A more "regular" update than many expected, without dramatic shifts in industry focus.

What it hit: A continuation of the trend from 2024 and 2025. Thin affiliate sites, category pages without real added value, and pages still leaning heavily on keyword matching lost visibility.

Surprisingly fast follow-up to the June update. Many sites that dropped in June saw partial recovery in December, suggesting Google fine-tuned how certain E-E-A-T signals are weighted. Shorter rollout than usual, 18 days.

What it hit: Broad. No clear industry angle, but smaller affiliate sites and thin informational pages lost visibility again.

Targeted mass-produced AI content and "parasite SEO", established domains renting out subfolders to third parties to exploit domain authority. The longest spam rollout in years (nearly four weeks).

What it hit: Coupon and discount sections on major media sites, AI-generated how-to farms, and blog networks with repurposed content.

The most volatile Core Update since March 2024. Many Norwegian sites reported sudden drops or gains in the first week, which then partially reversed as the rollout stabilised.

What it hit: Most noticeable on informational queries. Pages with clear author signatures, updated sources and clear E-E-A-T held up better than pages without.

First Core Update of 2025. Clean 14-day rollout with no major surprises, more "maintenance" than a big course correction. Biggest impact was on sites that still hadn't adapted to the 2024 changes.

What it hit: Continuation of the 2024 trend, smaller affiliate sites, thin category pages, and pages ranking on keyword optimisation rather than genuine user value.

Unusually short rollout (only 6 days) and unusually close to the November update. Many read it as a correction of unintended effects from November.

Broad update that hit informational niches hard. Together with the December update, it capped a year of unusual volatility.

Google described this one as specifically addressing small, independent sites that were disproportionately hit by the March 2024 rollout. Partial recoveries for some, but far from all.

Continued the cleanup started in March. Most noticeable on review and "best of" pages that used AI to generate comparisons without real testing.

The most important update in years. Google merged the Helpful Content system into the Core algorithm, HCU no longer exists as a standalone update. In parallel, an aggressive Spam Update was rolled out.

Rollout lasted 45 days (record-long) and produced documented 40–60% drops for thousands of small informational sites. Many never came back.

What it hit: AI-generated content farms, "SEO-first" pages written to rank rather than help, and older affiliate models.

The final separate HCU rollout before the system was folded into Core in March 2024. Introduced a "site-wide classifier", if enough of your content was judged unhelpful, your entire site was downgraded.

Google introduced an entirely new system that specifically evaluated whether content was "made primarily for humans or primarily for search engines". The starting shot for the reckoning against thin SEO-driven content marketing.

First major language model integrated into Google Search. Changed how Google understands context and prepositions in queries, especially for long, conversational searches. The foundation for everything Google has done with AI since.

Hit especially hard in health, medical and financial niches (YMYL, Your Money Your Life). Established E-A-T, Expertise, Authoritativeness, Trustworthiness, as decisive for sensitive topics. Extended to E-E-A-T (adding Experience) in 2022.

Google's first machine-learning-driven ranking factor. Made it possible for the algorithm to interpret queries it had never seen before, and marked the beginning of the end for keyword matching as a primary SEO tactic.

Google made mobile-friendliness a ranking factor for mobile search. First time technical UX was directly rewarded in ranking. Laid the groundwork for what later became Mobile-First Indexing (2018) and Core Web Vitals (2021).

First major reckoning against manipulative link strategies. Sites that had built their rankings on purchased or spammy links lost them, many overnight. Permanently changed link building as a discipline.

The original quality update. Targeted "thin content" and content farms producing low-value articles at scale. Everything Google has done since, including Helpful Content and the modern Core Updates, builds directly on Panda.