1
At a glance the headline numbers for Maps impact
Performance impact by maps provider.
3
Providers ranked
After min-sites filter
13,184
Sites in sample
Combined across all items
0.08
Best CLS (p75)
Mapbox
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Mapbox | 0.08 | 80.0% | 1,350 | |
| 2 | Leaflet/OpenStreetMap | 0.11 | 74.9% | 3,699 | |
| 3 | Google Maps | 0.11 | 74.3% | 8,135 |
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Mapbox 1.4% 1,350 0.08
HERE Maps 0% 14 0.05
Leaflet/OpenStreetMap 3.9% 3,699 0.11
Google Maps 8.6% 8,135 0.11
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
80% of Mapbox sites pass CLS. Google Maps trails 6 points behind, leaving 26% of its sites failing. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop 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 8.6%
802.3s
9968ms
740.11
771.7s
551.3s
Leaflet/OpenStreetMap 3.9%
812.2s
9970ms
750.11
771.7s
581.2s
Mapbox 1.4%
901.9s
9962ms
800.08
861.4s
641.0s
HERE Maps 0%
1001.8s
10050ms
800.05
1001.3s
80761ms
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: 80% of its sites pass. Google Maps trails at 74%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · desktop field datacorewebvitals.io/state-of-cwv
Related signals Customer data platforms (5) → Ad networks (9) → Font services (4) → Analytics (20) → Chrome field data from 94,910 sites, representing millions of real page loads · How we measured
Chrome field data from 94,910 sites, representing millions of real page loads. How we measured.