Push notifications impact
Performance impact by push_notifications provider.
1
At a glance the headline numbers for Push notifications impact
Performance impact by push_notifications provider.
3
Providers ranked
After min-sites filter
603
Sites in sample
Combined across all items
0.12
Best CLS (p75)
OneSignal
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 | OneSignal | 0.12 | 68.1% | 341 | |
| 2 | Firebase Cloud Messaging | 0.13 | 65.7% | 207 | |
| 3 | Airship | 0.15 | 59.0% | 55 |
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
PushEngage 0% 20 0.13
OneSignal 0.2% 341 0.12
Firebase Cloud Messaging 0.1% 207 0.13
Airship 0% 55 0.15
Pushwoosh 0% 8 0.12
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 66% and 68%. 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
OneSignal 0.2%
792.3s
9784ms
680.12
731.8s
451.3s
Airship 0%
872.0s
10079ms
590.15
871.4s
571.1s
Firebase Cloud Messaging 0.1%
852.0s
9878ms
660.13
861.5s
68909ms
PushEngage 0%
871.8s
9393ms
730.13
801.6s
361.1s
Pushwoosh 0%
712.7s
10078ms
430.12
712.2s
431.5s
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.
OneSignal leads on CLS: 68% of its sites pass. Firebase Cloud Messaging trails at 66%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · desktop field datacorewebvitals.io/state-of-cwv
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Chrome field data from 189,915 sites, representing millions of real page loads. How we measured.