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
0.09
Best CLS (p75)
Mapbox
The State of Web Vitals · Q2 2026 · 189,915 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 | 0.09 | 77.0% | 2,590 | |
| 2 | Leaflet/OpenStreetMap | 0.11 | 74.2% | 7,135 | |
| 3 | Google Maps | 0.11 | 72.9% | 15,802 |
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
HERE Maps 0%
30
0.05
Mapbox 1.4%
2,590
0.09
Leaflet/OpenStreetMap 3.8%
7,135
0.11
Google Maps 8.3%
15,802
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
No provider stands out: pass rates sit between 73% and 77%. computed
The State of Web Vitals · Q2 2026 · 189,915 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 8.3%
802.3s
9967ms
730.11
761.8s
541.3s
Leaflet/OpenStreetMap 3.8%
812.2s
9971ms
740.11
771.7s
581.2s
Mapbox 1.4%
882.0s
9962ms
770.09
831.5s
621.1s
HERE Maps 0%
1001.8s
10068ms
890.05
1001.3s
67854ms
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: 77% of its sites pass. Google Maps trails at 73%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop 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
Chrome field data from 189,915 sites, representing millions of real page loads. How we measured.