1
At a glance the headline numbers for Maps impact
Performance impact by maps provider.
3
Providers ranked
After min-sites filter
28,531
Sites in sample
Combined across all items
0.03
Best CLS (p75)
Mapbox
The State of Web Vitals · October 2026 · 212,308 crawled 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 | 88.6% | 2,891 | |
| 2 | Leaflet/OpenStreetMap | 0.05 | 84.6% | 7,994 | |
| 3 | Google Maps | 0.05 | 84.9% | 17,646 |
The State of Web Vitals · October 2026 · 212,308 crawled 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% 31 0.02
Mapbox 1.4% 2,891 0.03
Google Maps 8.3% 17,646 0.05
Leaflet/OpenStreetMap 3.8% 7,994 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 · October 2026 · 212,308 crawled 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
511.5s
Leaflet/OpenStreetMap 3.8%
782.4s
94121ms
850.05
711.9s
541.3s
Mapbox 1.4%
852.1s
97104ms
890.03
801.7s
641.0s
HERE Maps 0%
931.7s
96115ms
900.02
901.4s
89574ms
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 · October 2026 · 212,308 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals Customer data platforms (6) → Ad networks (9) → Font services (4) → Analytics (20) → 212,308 crawled sites with Chrome field data, representing millions of real page loads · How we measured
212,308 crawled sites with Chrome field data, representing millions of real page loads. How we measured.