The State of Web Vitals

Maps impact

Performance impact by maps provider.

Field data PhoneDesktopAll Scope All sites Q2 2026 edition · All devices field outcomes
Metric LCP INP CLS
1

At a glance the headline numbers for Maps impact

Performance impact by maps provider.

3
Providers ranked
After min-sites filter
25,527
Sites in sample
Combined across all items
0.03
Best CLS (p75)
Mapbox
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
2

The ranking sorted by CLS at p75, fastest first

# Provider CLS p75 Passing Sites
1 Mapbox 0.03 88.8%
2,590
2 Leaflet/OpenStreetMap 0.05 84.5%
7,135
3 Google Maps 0.05 84.9%
15,802
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
3

Passing CLS per provider which group passes the CLS most often

ProviderSitesPassing CLSp75
HERE Maps 0% 30 93% 0.02
Mapbox 1.4% 2,590 89% 0.03
Google Maps 8.3% 15,802 85% 0.05
Leaflet/OpenStreetMap 3.8% 7,135 85% 0.05
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site

No provider stands out: pass rates sit between 85% and 89%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
4

All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75

LCP
INP
CLS
FCP
TTFB
Google Maps 8.3%
742.6s
95110ms
850.05
682.1s
501.5s
Leaflet/OpenStreetMap 3.8%
782.4s
94121ms
850.05
711.9s
541.3s
Mapbox 1.4%
852.1s
97104ms
890.03
801.6s
651.0s
HERE Maps 0%
961.6s
96110ms
930.02
931.3s
89583ms
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites

One row per provider, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.

Mapbox leads on CLS: 89% of its sites pass. Leaflet/OpenStreetMap trails at 85%. computed

The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals Customer data platforms (6) → Ad networks (9) → Font services (4) → Analytics (20) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured