🧪 Methodology:
The Performance Experience Indew (PX Index) featured in this article is a score calculated using data from the Chrome User Experience Report (CrUX). To best reflect real-world mobile performance, our scoring model aligns with the Lighthouse weighting:
FCP (First Contentful Paint): 10%
LCP (Largest Contentful Paint): 35%
CLS (Cumulative Layout Shift): 25%
INP (Interaction to Next Paint): 30%
CrUX provides a holistic view of Core Web Vitals for each analyzed site, based on the 75th percentile of real-user data over a rolling 28-day window. Each site’s overall performance score is a weighted average of these four metrics, normalized to a score out of 100.
⚠️ Important note: This is not the PageSpeed Insights score — the rankings below are based exclusively on this custom scoring methodology.
Each month, we analyze the mobile web performance of:
✅ The 50 most visited websites in France
🛒 The top 30 e-commerce platforms
📰 The top 20 media outlets
✈️ The 20 leading travel websites
Let’s dive into the October 2025 leaderboard.
Web Performance ranking: France’s 50 most visited sites
With back-to-school season behind us, digital teams are already gearing up for the busiest commercial period of the year: Black Friday, Cyber Week and Christmas. While some brands took advantage of September to optimise speed, stability and interactivity, others appear to be in a code freeze ahead of peak season.
Let’s see which websites made performance gains this month.
🏆 TOP 3: WHO’S LEADING THE PACK?
The Top 3 in July remains stable, with slight movement:
- 🥇 Ministère de l’Intérieur holds onto first place with flawless metrics and lightning-fast interactivity.
- 🥈 Assurance Maladie stays steady in second place.
- 🥉 BFMTV climbs to third place thanks to gains in load speed and visual stability, overtaking impots.gouv.fr.
📈 BIGGEST GAINS THIS MONTH IN THE TOP 50
Le Monde sees significant improvement in visual stability, regaining its place among the top-performing media sites.
BUT delivers outstanding progress across all metrics, a fully optimised experience.
AliExpress enhances perceived speed with a much faster primary load time.
Voici, Actu.fr, Franceinfo, Vinted, all demonstrate the power of steady, focused improvements.
These improvements highlight how continuous optimization pays off. Even seemingly minor gains—every millisecond counts—can significantly impact rankings. Most of the sites climbing the chart have focused heavily on Interaction to Next Paint (INP). Why? Because a good FID doesn’t always mean a good INP.
Remember: FID only measured the delay of the first interaction. INP, by contrast, evaluates responsiveness throughout the entire user session, which explains these sharper shifts in ranking.
🔻 DECLINES
Service-Public.fr drops significantly after a sharp rise in LCP.
20 Minutes sees its visual stability fall out of the green zone.
Orange, Crédit Agricole, Boulanger also register regressions in loading or responsiveness.
These drops serve as a reminder: performance wins require ongoing attention. Without regular maintenance and monitoring, it’s easy to slip.
📊 WHERE DOES THE TOP 50 STAND ON CORE WEB VITALS?
✅ 41% of websites now pass all three Core Web Vitals – an improvement from September.
✅ 77% deliver fast load times (LCP < 2.5s).
✅ 80% ensure good visual stability (CLS < 0.1).
⚠️ Only 57% offer fluid interactivity (INP < 200ms) – a notoriously difficult metric to master.
INP remains the toughest metric, because it measures not just one interaction but the responsiveness of the entire experience. A page might feel fast on the first click… but become frustrating from the second.
This month confirms the importance of regular optimisations: better managed CLS or a few dozen milliseconds off LCP can propel a site up several places. At Fasterize, we see it every day: web performance is both a business lever and a critical SEO & UX criterion. Automating, monitoring and maintaining these optimisations is essential to stay competitive. We see a podium that clearly shows how every millisecond counts!
Now, here is the e-commerce ranking, for which web performance is a business and SEO challenge.
E-commerce Performance
In e-commerce, every millisecond impacts conversions. October saw fierce competition, with the top 3 tightly packed – a sign that the leading retailers are refining their UX ahead of the end-of-year rush.
🏆 TOP 3: NECK AND NECK
Sézane returns to the top spot after shaving off load time.
IKEA slips to second with a slight increase in LCP, but retains excellent visual stability.
Gifi climbs into third place with solid gains in load speed.
All three lead by keeping their Core Web Vitals entirely in the green – a textbook example of how performance boosts both UX and business results.
📈 WHO’S MOVING UP?
Auchan, BUT, AliExpress, Decathlon – all show meaningful improvements in loading, interactivity, or stability.
These brands used September to reinforce their technical foundations before entering the high-traffic season.
🔻 WHO’S FALLING BEHIND?
Many sites saw slight LCP increases – a sign that performance regressions can easily creep in during busy periods.
La Redoute, Amazon, Sephora, Showroomprivé, Veepee – all experienced slower load times.
In e‑commerce, the impacts are immediate: every millisecond lost can translate to abandoned carts.
📊 Core Web Vitals – E-commerce Summary
✅ 81% deliver fast LCP
✅ 77% ensure stable layout
✅ 65% offer smooth interactivity
❌ Only 38% achieve full green status – just weeks before the peak season.
Those who prepared early are in pole position: improved user experience, better conversions, and maximised return on ad spend.
Media websites: The most visited sites on mobile
This month, editorial quality was matched – or outshone – by speed, responsiveness, and layout stability. Several sites saw strong gains; others lost ground.
🏆 TOP 3: A CONSISTENTLY COMPETITIVE PODIUM
BFMTV retains its lead with stellar interactivity and fast load times.
Le Monde climbs thanks to improved CLS.
Franceinfo drops slightly despite performance improvements – proving how tight the race is at the top.
The gaps are narrow at the top, where even small optimisations can make a difference!
📈 CLIMBING THE RANKS THIS MONTH:
Actu.fr, Le Journal des Femmes, Voici, L’Internaute – all made strong progress in LCP and INP, offering smoother navigation on mobile.
🔻 DECLINES:
20 Minutes, Le Figaro, Yahoo – saw performance dips, particularly in visual stability and loading.
In the media sector, user experience is a critical retention factor!
Travel: Web Performance of the most visited travel sites
With winter bookings on the rise, the travel sector continues to struggle with speed and interactivity. But some players are starting to pull ahead.
🏆 TOP 3: UNCHANGED PODIUM
Easyvoyage leads with strong LCP and excellent CLS.
SNCF Connect holds second place with fluid INP, though LCP still needs work.
Tripadvisor remains third, but responsiveness is a challenge.
Only Easyvoyage and SNCF Connect have all metrics in green.
📈 ON THE RISE:
Viagogo, fr.hotels – both made notable improvements across all Core Web Vitals.
These gains show that steady, incremental optimisation can make a difference even in a historically slow sector.
🔻 DECLINES:
Trivago, Kayak – experienced minor regressions in interactivity and loading.
❌ Travel still struggles
Among the sectors analysed, travel displays the weakest metrics, signalling that substantial optimisations are both possible and necessary. Even leading sites have further to go.
✅ 42% deliver fast LCP (vs 32% in September)
✅ 63% provide good visual stability
❌ Only 11% offer smooth interactivity
The average PX Index score remains below e-commerce and media, a sign that the sector still has a long way to go.
That wraps up this month’s Web Performance Ranking! As you’ve seen, rankings shift significantly—both overall and by sector. One key takeaway: performance is never static. It evolves with every change you make to your website. That’s why web performance isn’t a one-time project—it’s an ongoing team effort.
Behind every millisecond saved lies a better user experience, reduced friction, and smoother paths to conversion.
In 2025, users expect more than ever.
To stay ahead, it’s not just about meeting Core Web Vitals thresholds—but sustaining them over time. That’s what drives real results: stronger UX, improved SEO, and better business outcomes.
With consistent effort and the right monitoring, you can climb the rankings—but more importantly, you’ll deliver a better experience than your competitors, and see your conversions rise as a result.
⭐ See you next month for a fresh look at the web experience across top French websites!
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