The Performance Experience Index (PX Index)
The PX Index is scored from 0 to 100 and measures the real share of users benefiting from a good experience on a website. It is based on real-world user data from the Chrome UX Report, and on all the key metrics that shape the user journey : from server response time to on-screen interactions.
The overall score is calculated as a weighted average of the percentage of users having a good experience, with each metric weighted according to its real impact on perceived performance:
The full methodology is detailed in this article.
With this new methodology, the rankings offer a new lens.
We no longer focus solely on the 75th percentile values of each metric to determine whether a site “passes the thresholds”, but instead display the percentage of users having a good experience, in other words, those exceeding the threshold.
A percentage of 75% or more means that the metric meets Google’s “Good” threshold, as over 75% of users are experiencing a high-quality visit.
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 January 2025 leaderboard.
Web Performance ranking: France’s 50 most visited sites
🏆 TOP 3: WHO’S LEADING THE PACK?
- 🥇 impots.gouv.fr takes the top spot with a PX Index of 93. The site stands out with over 90% of users in the green across LCP, INP, and CLS, an impressive all-round performance.
- 🥈 Leroy Merlin climbs one place, showcasing maturity in web performance. Despite a feature-rich site, it delivers a stable, fast experience: 95% enjoy a fast LCP, and over 85% experience smooth interactivity.
- 🥉 Assurance Maladie remains firmly in the top three, with a consistently stable user experience for the majority of its visitors.
📈 BIGGEST IMPROVEMENTS IN THE TOP 50
Several websites made significant gains in January by increasing the percentage of users in the green, especially on critical metrics:
L’Équipe (19ᵗʰ, +11): +13% users in green on INP, +10% on CLS. All metrics are now above the threshold.
Service-Public.fr (25ᵗʰ, +9): +15% in green on LCP, pushing the metric into “Good” territory.
20 Minutes (18ᵗʰ, +5): +15% in green on CLS, improving visual stability.
SFR (23ᵗʰ, +4): +16% in green on INP, indicating smoother interactivity.
These gains prove that even seemingly minor improvements can have a major impact. They reflect sustained optimisation efforts — particularly around Interaction to Next Paint (INP). Remember: good FID doesn’t guarantee good INP. FID only measures the first interaction, whereas INP evaluates responsiveness across the entire session.
🔻 FALLING BACK
Some websites dropped in the rankings due to either a decline in the percentage of users enjoying a good experience or a lack of progress in an increasingly competitive field:
linternaute.com (32ᵗʰ, −6): −5% in green on CLS, indicating a drop in visual stability.
Le Journal des Femmes (24ᵗʰ, −5): −6% on LCP, pushing more users into the orange. This affects how quickly users access main content.
But (27ᵗʰ, −5): No specific degradation observed, but a lack of momentum penalises its ranking.
Free (20ᵗʰ, −4): Similarly, no significant drop — but other sites are simply progressing faster.
These drops are a reminder: performance gains must be continuously maintained. Without consistent monitoring, it’s easy to slip backwards.
| Website | Ranking | Ranking M-1 | PX Index | LCP (% Good) | INP (% Good) | CLS (% Good) |
| impots.gouv.fr | 1 (0) | 1 | 93 | 95 | 92 | 98 |
| Leroy Merlin | 2 (1) | 3 | 92 | 95 | 87 | 92 |
| Assurance Maladie | 3 (-1) | 2 | 92 | 94 | 94 | 96 |
| BFM TV | 4 (0) | 4 | 91 | 94 | 87 | 90 |
| Cdiscount | 5 (0) | 5 | 91 | 98 | 79 | 93 |
See the full ranking
| Sites | Classement | Classement M-1 | PX Index | LCP (% Good) | INP (% Good) | CLS (% Good) |
| impots.gouv.fr | 1 (0) | 1 | 93 | 95 | 92 | 98 |
| Leroy Merlin | 2 (1) | 3 | 92 | 95 | 87 | 92 |
| Assurance Maladie | 3 (-1) | 2 | 92 | 94 | 94 | 96 |
| BFM TV | 4 (0) | 4 | 91 | 94 | 87 | 90 |
| Cdiscount | 5 (0) | 5 | 91 | 98 | 79 | 93 |
| Ministere de l’Intérieur | 6 (2) | 8 | 91 | 89 | 91 | 98 |
| Franceinfo | 7 (0) | 7 | 90 | 93 | 82 | 95 |
| La Redoute | 8 (1) | 9 | 90 | 94 | 77 | 96 |
| 9 (-3) | 6 | 90 | 92 | 78 | 96 | |
| Actu.fr | 10 (1) | 11 | 89 | 93 | 76 | 91 |
| Bing | 11 (-1) | 10 | 88 | 90 | 79 | 91 |
| Le Monde | 12 (1) | 13 | 88 | 92 | 87 | 79 |
| AliExpress | 13 (-1) | 12 | 87 | 90 | 84 | 89 |
| Le Parisien | 14 (1) | 15 | 87 | 87 | 77 | 92 |
| Gala | 15 (2) | 17 | 87 | 95 | 71 | 83 |
| eBay | 16 (-2) | 14 | 86 | 87 | 79 | 96 |
| Le Figaro | 17 (1) | 18 | 86 | 95 | 67 | 82 |
| 20 Minutes | 18 (5) | 23 | 86 | 87 | 80 | 84 |
| L’Équipe | 19 (11) | 30 | 86 | 90 | 76 | 84 |
| Free | 20 (-4) | 16 | 86 | 85 | 92 | 75 |
| Ouest France | 21 (0) | 21 | 85 | 93 | 77 | 79 |
| Amazon | 22 (-2) | 20 | 85 | 91 | 80 | 78 |
| SFR | 23 (4) | 27 | 85 | 82 | 85 | 94 |
| Le Journal des Femmes | 24 (-5) | 19 | 84 | 83 | 73 | 86 |
| Service-Public.fr | 25 (9) | 34 | 84 | 87 | 65 | 96 |
| Voici | 26 (-2) | 24 | 84 | 87 | 64 | 92 |
| But | 27 (-5) | 22 | 84 | 92 | 73 | 76 |
| Tele Loisirs | 28 (-3) | 25 | 83 | 88 | 70 | 85 |
| PagesJaunes | 29 (-1) | 28 | 82 | 84 | 89 | 77 |
| Femme Actuelle | 30 (2) | 32 | 81 | 83 | 60 | 93 |
| Marmiton | 31 (-2) | 29 | 81 | 79 | 65 | 90 |
| Linternaute.com | 32 (-6) | 26 | 81 | 82 | 68 | 77 |
| Orange | 33 (-2) | 31 | 80 | 75 | 75 | 93 |
| Boulanger | 34 (-1) | 33 | 80 | 87 | 77 | 86 |
| E.Leclerc | 35 (1) | 36 | 78 | 79 | 79 | 62 |
| Credit Agricole | 36 (1) | 37 | 77 | 78 | 80 | 61 |
| Carrefour | 37 (-2) | 35 | 77 | 81 | 69 | 62 |
| Yahoo | 38 (0) | 38 | 76 | 84 | 63 | 96 |
| 39 (0) | 39 | 71 | 56 | 63 | 97 | |
| Vinted | 40 (0) | 40 | 71 | 71 | 65 | 89 |
| Leboncoin.fr | 41 (2) | 43 | 70 | 79 | 45 | 64 |
| 42 (-1) | 41 | 69 | 58 | 60 | 88 | |
| Darty | 43 (2) | 45 | 69 | 74 | 83 | 55 |
| Rakuten France | 44 (-2) | 42 | 68 | 77 | 61 | 77 |
| Fnac | 45 (-1) | 44 | 68 | 68 | 81 | 89 |
| Dailymotion | 46 (0) | 46 | 67 | 64 | 57 | 74 |
| LA POSTE | 47 (1) | 48 | 64 | 55 | 76 | 51 |
| Doctolib | 48 (-1) | 47 | 62 | 42 | 76 | 78 |
| YouTube | 49 (0) | 49 | 45 | 32 | 27 | 67 |
| Wish | 50 (0) | 50 | 39 | 22 | 55 | 73 |
📊 Where Do France’s Top 50 Stand This Month?
These figures reflect a generally solid performance across the top 50, but with disparities depending on the metric. INP remains the hardest to stabilise over time.
INP doesn’t measure a single interaction, it reflects the overall responsiveness of the user journey. A page might feel fast on the first click… but frustrating on the second.
Looking deeper, here’s the share of websites where at least 75% of users meet the “Good” threshold:
✅ 18% pass all 3 Core Web Vitals
✅ 46% have a PX Index considered “Good”
✅ 60% reach the threshold on LCP
✅ 80% on INP
✅ 82% on CLS
At Fasterize, we see this daily: web performance is as much a business driver as a UX and SEO issue. Automating, monitoring, and maintaining performance is key to staying ahead.
Now, here is the e-commerce ranking, for which web performance is a business and SEO challenge.
Most visited e-commerce sites: their user experience
E-commerce platforms are emerging from the most demanding period of the year, and the gap is widening between those that managed to maintain performance under pressure and those whose experience has started to erode.
This month, the top of the leaderboard remains very tight, proof that the leading brands are continuously refining their UX to stay competitive, while others are already showing signs of strain.
🏆 TOP 3: E-COMMERCE LEADERS
- 🥇 Sézane (1st, +2) climbs to the top with a PX Index of 94. The site stands out thanks to an improvement in CLS, with +6% of users experiencing good visual stability, reinforcing a smooth and reassuring purchase journey.
- 🥈 Ikea (2nd, -1) maintains a high level of performance. The platform delivers a robust and consistent experience, with a large majority of users in the green across all key metrics.
- 🥉 Leroy Merlin (3rd, -1) remains on the podium. Continued efforts on INP will be needed to hold this position and improve the overall experience.
The top three are separated by less than two points on the PX Index: clear evidence that even micro-optimisations can tip the balance. These are examples to follow for staying competitive, boosting conversions, and delivering a flawless user experience.
📈 WHO’S MOVING UP?
Darty (26th, +3)
An +8% increase in users enjoying a good experience on INP, indicating smoother interactivity. However, a worsening CLS could weaken visual stability if left unaddressed.
🔻 WHO’S FALLING BEHIND?
While not alarming, some sites are seeing a decline in UX:
- Etsy (21st, -3)
Etsy’s drop is not due to a deterioration in metrics. The overall experience remains stable, but a lack of improvement in a highly competitive field is enough to slip a few places. - Rakuten (27th, -3)
Rakuten has seen a drop in interactivity, with +16% more users having a poor experience on INP. A damaging shift for an e-commerce site, where fluidity of interaction is crucial in the purchase journey.
In e-commerce, the impacts are immediate: every millisecond lost can lead to abandoned baskets.
| Website | Ranking | Ranking M-1 | PX Index | LCP(% Good) | INP(% Good) | CLS(% Good) |
| Sézane | 1 (2) | 3 | 94 | 97 | 91 | 94 |
| Ikea | 2 (-1) | 1 | 93 | 95 | 90 | 93 |
| Leroy Merlin | 3 (-1) | 2 | 92 | 95 | 87 | 92 |
| Cdiscount | 4 (0) | 4 | 91 | 98 | 79 | 93 |
| Zalando | 5 (0) | 5 | 90 | 92 | 82 | 94 |
See the full ranking
| Website | Ranking | Ranking M-1 | PX Index | LCP(% Good) | INP(% Good) | CLS(% Good) |
| Sézane | 1 (2) | 3 | 94 | 97 | 91 | 94 |
| Ikea | 2 (-1) | 1 | 93 | 95 | 90 | 93 |
| Leroy Merlin | 3 (-1) | 2 | 92 | 95 | 87 | 92 |
| Cdiscount | 4 (0) | 4 | 91 | 98 | 79 | 93 |
| Zalando | 5 (0) | 5 | 90 | 92 | 82 | 94 |
| Laredoute | 6 (0) | 6 | 90 | 94 | 77 | 96 |
| Showroomprive | 7 (0) | 7 | 88 | 87 | 86 | 88 |
| Conforama | 8 (1) | 9 | 87 | 92 | 83 | 92 |
| Auchan | 9 (2) | 11 | 87 | 89 | 80 | 92 |
| AliExpress | 10 (-2) | 8 | 87 | 90 | 84 | 89 |
| Ebay | 11 (-1) | 10 | 86 | 87 | 79 | 96 |
| Amazon | 12 (1) | 13 | 85 | 91 | 80 | 78 |
| Gifi | 13 (-1) | 12 | 85 | 89 | 88 | 85 |
| BUT | 14 (0) | 14 | 84 | 92 | 73 | 76 |
| Sephora | 15 (0) | 15 | 83 | 91 | 61 | 88 |
| Manomano | 16 (0) | 16 | 83 | 85 | 80 | 84 |
| Decathlon | 17 (0) | 17 | 81 | 86 | 54 | 90 |
| Boulanger | 18 (1) | 19 | 80 | 87 | 77 | 86 |
| Veepee | 19 (2) | 21 | 80 | 83 | 81 | 69 |
| Leclerc | 20 (2) | 22 | 78 | 79 | 79 | 62 |
| Etsy | 21 (-3) | 18 | 77 | 84 | 88 | 96 |
| Carrefour | 22 (-2) | 20 | 77 | 81 | 69 | 62 |
| Leboncoin | 23 (2) | 25 | 70 | 79 | 45 | 64 |
| Groupon | 24 (-1) | 23 | 70 | 74 | 79 | 88 |
| Cultura | 25 (1) | 26 | 69 | 72 | 81 | 65 |
| Darty | 26 (3) | 29 | 69 | 74 | 83 | 55 |
| Rakuten | 27 (-3) | 24 | 68 | 77 | 61 | 77 |
| Fnac | 28 (0) | 28 | 68 | 68 | 81 | 89 |
| Castorama | 29 (-2) | 27 | 66 | 76 | 66 | 85 |
| Shein | 30 (0) | 30 | 58 | 61 | 58 | 79 |
| Nocibe | 31 (0) | 31 | 56 | 71 | 37 | 52 |
| Wish | 32 (0) | 32 | 39 | 22 | 55 | 73 |
On average:
84% of users benefit from a good LCP (loading of main content)
75% enjoy good interactivity (INP)
82% experience good visual stability (CLS)
Overall, nearly half of e-commerce sites have a PX Index over 90!
18% of sites meet all 3 Core Web Vitals
50% reach a PX Index considered “good”
78% meet the green threshold on LCP
68% meet the green threshold on INP
75% meet the green threshold on CLS
Those who anticipated this critical phase ahead of the commercial season now approach traffic peaks from a position of strength, with a better user experience, optimised conversions, and more profitable acquisition costs.
Media sites: ranking of the most visited mobile platforms
Speed, interactivity and stability are now just as vital for retention as editorial quality.
🏆 TOP 3: MEDIA LEADERS
- 🥇 BFMTV (1st, stable) retains the top spot with a PX Index of 91. The site delivers a highly consistent experience, with over 85% of users in the green across all key metrics.
- 🥈 Franceinfo (2nd, stable) stands out particularly for its excellent visual stability, ensuring comfortable reading despite frequent content updates.
- 🥉 Actu (3rd, stable) completes the podium with a robust experience, supported by an LCP and CLS well above the green threshold: ensuring quick and clear access to information.
The margins remain tight at the top of the ranking, where even the smallest optimisation can make a difference!
📈 CLIMBING THE RANKS THIS MONTH:
20 Minutes (8th, +2): improvement in visual stability, with +15% more users in the green for CLS, a key gain for a site where immediate readability drives engagement.
L’Équipe (9th, +6): one of the strongest climbers this month, with +13% more users in the green for INP and +10% for CLS.
Femme Actuelle (14th, +2): a more discreet but steady optimisation effort, strengthening the user experience, particularly around page stability.
🔻 DECLINES:
Conversely, some sites slipped due to a measured decline in user experience, often tied to a single key metric.
- Le Journal des Femmes (11th, -3): dropped due to worsening LCP, with around 5% more users experiencing a poor start-of-load experience.
- Voici (13th, -2): a slight deterioration in INP, which affects interaction smoothness on certain pages.
- L’Internaute (16th, -3): decline linked to a drop in CLS, with about 5% of users moving into the orange zone, affecting reading comfort.
In the media sector, user experience is a critical retention factor!
| Website | Ranking | Ranking M-1 | PX Index | LCP (% Good) | INP (% Good) | CLS (% Good) |
| BFMTV | 1 (0) | 1 | 91 | 94 | 87 | 90 |
| Franceinfo | 2 (0) | 2 | 90 | 93 | 82 | 95 |
| Actu | 3 (0) | 3 | 89 | 93 | 76 | 91 |
| Le monde | 4 (0) | 4 | 88 | 92 | 87 | 79 |
| Le Parisien | 5 (0) | 5 | 87 | 87 | 77 | 92 |
See the full ranking
| Website | Ranking | Ranking M-1 | PX Index | LCP (% Good) | INP (% Good) | CLS (% Good) |
| BFMTV | 1 (0) | 1 | 91 | 94 | 87 | 90 |
| Franceinfo | 2 (0) | 2 | 90 | 93 | 82 | 95 |
| Actu | 3 (0) | 3 | 89 | 93 | 76 | 91 |
| Le monde | 4 (0) | 4 | 88 | 92 | 87 | 79 |
| Le Parisien | 5 (0) | 5 | 87 | 87 | 77 | 92 |
| Gala | 6 (0) | 6 | 87 | 95 | 71 | 83 |
| Le Figaro | 7 (0) | 7 | 86 | 95 | 67 | 82 |
| 20minutes | 8 (2) | 10 | 86 | 87 | 80 | 84 |
| L’équipe | 9 (6) | 15 | 86 | 90 | 76 | 84 |
| Ouest-France | 10 (-1) | 9 | 85 | 93 | 77 | 79 |
| Le journal des femmes | 11 (-3) | 8 | 84 | 83 | 73 | 86 |
| programme-tv.net | 12 (0) | 12 | 84 | 87 | 65 | 96 |
| Voici | 13 (-2) | 11 | 84 | 87 | 64 | 92 |
| Femme Actuelle | 14 (2) | 16 | 81 | 83 | 60 | 93 |
| marmiton.org | 15 (-1) | 14 | 81 | 79 | 65 | 90 |
| L’internaute | 16 (-3) | 13 | 81 | 82 | 68 | 77 |
| Yahoo | 17 (0) | 17 | 76 | 84 | 63 | 96 |
| Dailymotion | 18 (0) | 18 | 67 | 64 | 57 | 74 |
| Youtube | 19 (0) | 19 | 45 | 32 | 27 | 67 |
On average:
84% of users enjoy a good LCP (first content load)
69% experience good interactivity (INP)
86% benefit from good visual stability (CLS)
The sector remains generally strong:
42% of sites achieve a PX Index over 90
However, only a minority fully meet all Core Web Vitals:
11% validate all 3 Core Web Vitals
89% meet the green threshold for LCP → loading is largely under control
42% meet the green threshold for INP → interactivity remains the biggest challenge
89% meet the green threshold for CLS → visual stability is mostly solid, with some room for improvement
Maintaining these levels, rather than chasing occasional peaks, will be key to ensuring a smooth reading experience.
Travel: Performance of the most visited travel websites
Comparison engines, booking platforms, and transport operators must deal with complex user journeys, high functional density, large volumes of data, and highly variable traffic peaks depending on the season. In this context, ensuring a smooth and stable experience for the majority of users remains a challenge.
This ranking highlights a sector where performance is progressing slowly, and where gaps remain significant compared to other verticals.
🏆 TOP 3: TRAVEL LEADERS
🥇 easyvoyage (1st, stable)
Maintains its lead with a PX Index of 89. The site stands out for a well-balanced experience, with a large majority of users in the green on LCP, INP, and CLS, a rare level of maturity in the sector.🥈 ViaMichelin (2nd, stable)
Confirms its robustness, supported by excellent visual stability. However, INP remains more fragile, limiting further PX Index progression.🥉 SNCF Connect (3rd, +1)
Gains a place thanks to minor optimisations, with +2% of users in the green on LCP and +1% on CLS, reflecting a progressive improvement in overall experience.
📈 ON THE RISE:
- fr.hotels (10th, +2)
Sees a notable rise due to combined improvements in CLS and INP (+2%). These gains add 5 points to the site’s PX Index. - Airbnb (13th, +2)
Improves thanks to a +5% increase in users enjoying a good experience on LCP, enhancing initial content access, a key point in search and booking journeys.
These two players show that consistent, measured effort is enough to stand out in a historically slow-moving sector.
🔻 DECLINES:
No site experienced a marked decline this month.
| Website | Ranking | Ranking M-1 | PX Index | LCP (% Good) | INP (% Good) | CLS (% Good) |
|---|---|---|---|---|---|---|
| easyvoyage | 1 (0) | 1 | 89 | 94 | 85 | 94 |
| viamichelin | 2 (0) | 2 | 84 | 91 | 51 | 95 |
| sncf-connect | 3 (1) | 4 | 81 | 80 | 82 | 83 |
| tripadvisor | 4 (-1) | 3 | 81 | 83 | 76 | 79 |
| mappy | 5 (0) | 5 | 76 | 76 | 58 | 87 |
See the full ranking
| Website | Ranking | Ranking M-1 | PX Index | LCP (% Good) | INP (% Good) | CLS (% Good) |
|---|---|---|---|---|---|---|
| easyvoyage | 1 (0) | 1 | 89 | 94 | 85 | 94 |
| viamichelin | 2 (0) | 2 | 84 | 91 | 51 | 95 |
| sncf-connect | 3 (1) | 4 | 81 | 80 | 82 | 83 |
| tripadvisor | 4 (-1) | 3 | 81 | 83 | 76 | 79 |
| mappy | 5 (0) | 5 | 76 | 76 | 58 | 87 |
| abritel | 6 (1) | 7 | 74 | 79 | 68 | 82 |
| trivago | 7 (-1) | 6 | 74 | 80 | 40 | 81 |
| viagogo | 8 (1) | 9 | 71 | 73 | 68 | 75 |
| liligo | 9 (-1) | 8 | 70 | 62 | 55 | 71 |
| fr.hotels | 10 (2) | 12 | 70 | 64 | 66 | 79 |
| thetrainline | 11 (-1) | 10 | 69 | 82 | 36 | 64 |
| ouigo | 12 (-1) | 11 | 68 | 82 | 44 | 49 |
| airbnb | 13 (2) | 15 | 63 | 61 | 46 | 61 |
| kayak | 14 (-1) | 13 | 63 | 68 | 51 | 49 |
| skyscanner | 15 (-1) | 14 | 62 | 61 | 40 | 68 |
| all accor | 16 (1) | 17 | 60 | 59 | 49 | 77 |
| booking | 17 (-1) | 16 | 58 | 62 | 55 | 93 |
| opodo | 18 (0) | 18 | 54 | 51 | 41 | 46 |
| airfrance | 19 (0) | 19 | 52 | 56 | 27 | 57 |
📊 Where does the travel ranking stand this month?
On average:
72% of users benefit from a good LCP (initial content load)
55% enjoy good interactivity (INP)
73% have good visual stability (CLS)
❌ The travel sector remains the most behind among the major verticals analysed.
No site exceeds a PX Index of 90, and the average PX Index is capped at 69 — compared to 80 for e-commerce and 82 for media.
16% of sites meet all 3 Core Web Vitals
47% reach the green threshold for LCP
16% reach the green threshold for INP
52% reach the green threshold for CLS
There are, however, slightly positive signals: some platforms are working on targeted optimisations, particularly for initial load and visual stability. INP remains the primary barrier to faster user experience improvements in the sector.
Web performance is no longer just about an isolated technical metric: it’s about the site’s ability to continuously offer a good experience to the majority of users.
This month’s variations, between sectors and between individual sites, show that a few targeted optimisations can drive quick progress, but sites can just as quickly fall back if they ease up on their efforts. Meeting Google’s green threshold is a step; maintaining it is the real challenge.
In this context, web performance becomes a strategic lever in its own right, at the crossroads of UX, SEO, and business. Improving the proportion of users in the green means reducing friction, securing journeys, and creating long-lasting competitive advantage.
Where does your site rank?
Analyse your site’s performance in 1 click and compare yourself to the leaders in your sector:
- ✅ Assess the percentage of users enjoying a good experience
- ✅ Get your PX Index
- ✅ Compare yourself to your competitors and sector
And what better way to kick off this effort than with the support of web performance experts?
Fasterize is here to guide you with concrete solutions to make your site faster, more stable, and more responsive.
⭐ See you next month for another deep dive into the web experience of France’s top sites!
