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.
2
Providers ranked
After min-sites filter
313
Sites in sample
Combined across all items
0.13
Best CLS (p75)
OneSignal
The State of Web Vitals · Q1 2026 · 94,910 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 | OneSignal | 0.13 | 70.8% | 198 | |
| 2 | Firebase Cloud Messaging | 0.14 | 65.5% | 115 |
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
OneSignal 0.2% 198 0.13
Firebase Cloud Messaging 0.1% 115 0.14
PushEngage 0% 12 0.12
Airship 0% 31 0.21
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
71% of OneSignal sites pass CLS. Firebase Cloud Messaging trails 5 points behind, leaving 34% of its sites failing. computed
The State of Web Vitals · Q1 2026 · 94,910 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
OneSignal 0.2%
692.8s
88154ms
710.13
592.3s
471.4s
Firebase Cloud Messaging 0.1%
693.0s
94142ms
660.14
741.8s
66969ms
Airship 0%
762.4s
100136ms
550.21
691.9s
59921ms
PushEngage 0%
822.0s
80169ms
640.12
731.8s
181.3s
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: 71% of its sites pass. Firebase Cloud Messaging trails at 66%. computed
The State of Web Vitals · Q1 2026 · 94,910 sites · all devices field datacorewebvitals.io/state-of-cwv
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