France Experiences Significant Click-Through Rate Decline Following AI Overview Launch

On July 22, 2026, France became the latest major search market to integrate AI Overviews into its Google search results. This launch provided a unique opportunity to observe the immediate impact of the feature, as opposed to gradual rollouts often coinciding with algorithm updates. Researchers tracked 963 domains in Google Search Console for 28 days prior to and nine days following the AI Overview implementation. The analysis, conducted by data scientist Xibeijia Guan, revealed a substantial decrease in click-through rates (CTR) for French websites, particularly those heavily exposed to the new AI feature.

Within just nine days of the AI Overview rollout, the domains most affected saw their click-through rates plummet by over a fifth. In contrast, domains with minimal exposure to AI Overviews experienced negligible changes. This distinct pattern, researchers argue, strongly indicates that the observed traffic shifts are directly attributable to AI Overviews, rather than broader algorithmic adjustments or seasonal fluctuations.

Quantifying the Impact: A Significant Drop in Clicks

Across the entire panel of studied domains, the overall click-through rate experienced a 3.4% decline in the nine-day period following the AI Overview launch. However, for domains with high exposure to AI Overviews, the CTR fell by a staggering 23.1%, which is six times the overall average. This decline was not an isolated incident; 82.2% of highly exposed domains reported a loss in CTR, suggesting that avoiding the impact of AI Overviews has become the exception rather than the rule.

The data suggests a direct correlation between AI Overview exposure and CTR loss. A detailed analysis comparing the change in CTR against each domain’s AI Overview rate across all 963 domains revealed a slope of -0.9. This indicates that for every additional percentage point of AI Overview exposure, websites can expect to lose approximately one percentage point of their click-through rate. For instance, a website where 15% of its queries trigger an AI Overview could anticipate a roughly 15% reduction in its CTR. This provides a calculable metric for estimating potential losses based on a domain’s exposure rate, which can be ascertained using tools like Ahrefs’ Site Explorer. It is important to note that this slope represents a risk factor, not a definitive prediction, as other variables can influence a site’s performance.

Impressions Remain Stable, Clicks Decline: The "Great Decoupling" Continues

A key observation is that the introduction of AI Overviews has not significantly impacted search result rankings or impression volumes. Pages continue to appear in search results with the same or even increased frequency. The critical difference lies in user engagement: pages are simply being clicked less often. This phenomenon mirrors the "great decoupling" observed in previous studies, where AI Overviews do not necessarily remove content from search results but rather render it less necessary within the result page itself. In an extreme case within the French study, one domain experienced a 183% increase in impressions while simultaneously seeing a 1.9% drop in clicks, effectively dividing its CTR by more than three.

Market-Wide Impact and French Specifics

While the 23.1% CTR drop represents the experience of the most affected sites, the median decline across the entire French market panel was 5.7%. However, this median figure masks a more severe distribution of losses. Nearly half of the websites analyzed lost more than 10% of their daily clicks within the nine-day period, and one in twenty experienced a loss of 50%. This rapid decline occurred within a remarkably short timeframe.

Furthermore, the exposure to AI Overviews is projected to increase. Currently, the median AI Overview rate among the studied domains stands at 5.4%, with 29% already exceeding 10%. These figures have consistently trended upwards in all markets where AI Overviews have been implemented since 2024. Notably, French domains (.fr) within the study experienced a median click loss of 12.3%, surpassing the 8.8% loss for the panel as a whole. This suggests that French websites are more vulnerable to AI Overview impact compared to international entities operating within the same search market.

The Health Sector Faces the Starkest Consequences

The health sector emerged as the most severely impacted industry in the study. Health-related queries typically have an AI Overview rate of 22.2%, the highest among all sectors analyzed. Consequently, the health sector witnessed a 20.4% drop in click-through rates. This vulnerability is attributed to the nature of health queries, which are often informational, yield concise answers that fit well within an AI Overview, and do not typically lead to immediate transactional actions.

The core determinant of a website’s fate, according to the analysis, is not its industry vertical but the intent behind its search queries. Queries that can be answered comprehensively within a single paragraph are most susceptible to being absorbed by AI Overviews. Conversely, queries requiring tools, account logins, price comparisons, purchase decisions, or nuanced human opinions tend to hold up better. This suggests that keyword analysis through this intent-driven lens is more critical than solely examining industry classifications.

Anticipating Further Deterioration

The observed CTR declines are likely to worsen over time. Previous global research tracking the impact of AI Overviews over two years showed a significant escalation in the effect on position 1 click-through rates, rising from -34.5% in Spring 2025 to -58% by the end of 2025. This trend indicates that the impact does not diminish with time but rather intensifies as AI Overviews become more prevalent and users adapt to seeking information directly from these summaries, reducing their need to click through to individual websites. There is no indication that France will deviate from this trajectory, and further analysis over an extended period is planned to monitor the ongoing impact.

Methodological Considerations

The reported 23.1% median CTR figure represents the raw observed change for highly exposed groups. When adjusted for a control group whose CTR actually rose by 2.3% during the same period, the true impact of AI Overviews on highly exposed sites is calculated to be a more substantial -24.8%. This adjustment accounts for the fact that highly exposed sites not only suffered direct losses but also missed out on the marginal gains experienced by less affected domains.

Key Takeaways for Website Owners

In the initial two weeks following the introduction of AI Overviews in France, highly exposed websites experienced a significant reduction in their click-through rates, while less exposed sites remained largely unaffected. The relationship between AI Overview exposure and CTR loss appears linear, with approximately one point of CTR decline for every point of exposure.

Three crucial takeaways emerge from this analysis:

1. Measurable Risk: A website’s risk exposure to AI Overviews is quantifiable. Tools like the SERP features filter in Site Explorer can identify the proportion of queries that trigger an AI Overview, allowing for proactive assessment before significant damage occurs.
2. Focus on CTR, Not Impressions: Impression data alone is misleading. While impressions may remain stable or even increase, the critical metric to monitor is click-through rate, which has borne the brunt of the impact.
3. Consistent Global Trend: The observed magnitudes of decline in France align with findings from other markets and analyses. Reports from various sources indicate substantial organic CTR declines, ranging from approximately 47.5% to over 65%. This widespread impact underscores a global shift towards a "zero-click" search environment, a trend that France has now firmly joined.