The SEO KPIs You Must Track
7 min
The essential SEO KPIs are organic traffic, rankings on target keywords, click-through rate (CTR), Core Web Vitals and conversions attributed to SEO. Avoid drowning your reporting in vanity metrics: focus on what translates into revenue.
Good SEO reporting is not measured by the number of metrics but by the quality of decisions it enables. Here are the indicators that truly matter and how to read them.
Visibility KPIs: Traffic and Rankings
Organic traffic is the queen metric: it measures the number of visitors arriving on your site via an unpaid search. Track its monthly evolution and always compare year-on-year to neutralise seasonality.
Rankings on your target keywords complement this picture. A keyword moving from position 8 to position 4 can triple the associated traffic: rank matters as much as volume.
Also monitor the number of keywords ranking in the top 10 and top 3: these aggregates give a quick snapshot of your overall visibility evolution.
- Monthly organic traffic (Google Analytics 4).
- Rankings on 20 to 50 strategic keywords (Search Console or third-party tool).
- Number of keywords in top 3, top 10, top 20.
CTR: The Often Overlooked Metric
Click-through rate (CTR) measures the proportion of users who click on your result after seeing it. A low CTR at a good position means your title or description is not compelling enough.
Google Search Console provides this data by URL and by query. A CTR below 2% in positions 3-5 is a signal to optimise your meta tags.
Improving CTR without changing position increases traffic at constant budget: it is one of the most effective and least exploited levers.
A 1-point CTR improvement across the first 10 pages of a site generates an average organic traffic increase of 8 to 15% with no position change at all.
Industry studies 2025-2026
Core Web Vitals: Technical Performance
Core Web Vitals (LCP, INP, CLS) are the user performance metrics integrated into Google's algorithm since 2021. A poor score directly penalises rankings.
Track these metrics in Google Search Console (the 'Page Experience' report) and aim for green on all indicators. An LCP above 2.5 seconds is a significant competitive disadvantage.
These metrics fluctuate: check them at least once a month, especially after every major site update.
- LCP (Largest Contentful Paint): main content display time, ideally under 2.5 s.
- INP (Interaction to Next Paint): interaction responsiveness, ideally under 200 ms.
- CLS (Cumulative Layout Shift): visual page stability, ideally under 0.1.
Conversions: The Ultimate Goal
All the above metrics only make sense if they translate into actions: completed forms, calls, purchases, downloads. Configure goals in Google Analytics 4 to measure conversions by traffic source.
Track the organic conversion rate separately: high organic traffic with a low conversion rate signals a mismatch between visitor intent and your page response.
Cost per organic conversion is the ultimate KPI: it allows you to directly compare SEO to other channels and justify the investment.
SMEs that actively track their organic conversions adjust their content strategy twice as fast and achieve an average SEO ROI 35% higher.
Industry studies 2025-2026
Metrics to Avoid in Your Reporting
Moz's Domain Authority (DA) and similar metrics are proprietary scores with no direct impact on Google. Mentioning them in an SEO client report is often a sign of lack of rigour.
Raw backlink count is also misleading: 10 links from reference sites are worth more than 500 low-quality links. Track the progression of Trust Flow or Domain Rating (DR) on your strategic pages instead.
Finally, be wary of combined all-sources traffic: always isolate organic traffic from paid, direct and social traffic to precisely measure SEO effects.
FAQ
How often should SEO reporting be done?
A monthly report is the norm to track trends without over-interpretation. For technical metrics (Core Web Vitals, indexation errors), a weekly check is recommended.
Which tools should be used to track SEO KPIs?
Google Search Console and Google Analytics 4 cover the essentials for free. For position tracking and competitive analysis, Semrush, Ahrefs or Sistrix are the professional market references.
How do I know if a traffic increase is due to SEO?
Filter your traffic by 'Organic Search' source in Google Analytics 4. Cross-reference with Google Search Console to confirm that the increase corresponds to rising positions on target queries.