1
At a glance the headline numbers for Maps impact
Performance impact by maps provider.
3
Providers ranked
After min-sites filter
25,556
Sites in sample
Combined across all items
0.02
Best CLS (p75)
Mapbox
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Mapbox | 0.02 | 90.0% | 2,595 | |
| 2 | Google Maps | 0.03 | 86.1% | 15,822 | |
| 3 | Leaflet/OpenStreetMap | 0.04 | 85.6% | 7,139 |
The State of Web Vitals · Q2 2026 · 189,915 sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
HERE Maps 0% 30 0.00
Mapbox 1.4% 2,595 0.02
Google Maps 8.3% 15,822 0.03
Leaflet/OpenStreetMap 3.8% 7,139 0.04
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 86% and 90%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · phone 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
Leaflet/OpenStreetMap 3.8%
762.5s
90141ms
860.04
692.0s
541.3s
Google Maps 8.3%
722.6s
93124ms
860.03
662.1s
511.4s
Mapbox 1.4%
842.2s
96113ms
900.02
781.7s
631.0s
HERE Maps 0%
1001.6s
90111ms
950.00
951.4s
91546ms
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: 90% of its sites pass. Google Maps trails at 86%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · phone 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.