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
669
Sites in sample
Combined across all items
0.11
Best CLS (p75)
OneSignal
The State of Web Vitals · October 2026 · 212,308 crawled sites · phone field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | OneSignal | 0.11 | 73.7% | 369 | |
| 2 | Firebase Cloud Messaging | 0.16 | 64.3% | 240 | |
| 3 | Airship | 0.18 | 59.5% | 60 |
The State of Web Vitals · October 2026 · 212,308 crawled sites · phone field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
PushEngage 0% 21 0.03
Pushwoosh 0% 9 0.05
OneSignal 0.2% 369 0.11
Firebase Cloud Messaging 0.1% 240 0.16
Airship 0% 60 0.18
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
74% of OneSignal sites pass CLS. Firebase Cloud Messaging trails 10 points behind, leaving 36% of its sites failing. computed
The State of Web Vitals · October 2026 · 212,308 crawled 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
OneSignal 0.2%
712.7s
83179ms
740.11
602.3s
541.3s
Firebase Cloud Messaging 0.1%
653.1s
89155ms
640.16
751.9s
651.0s
Airship 0%
762.3s
97160ms
600.18
741.8s
541.1s
PushEngage 0%
752.3s
69217ms
880.03
692.1s
201.6s
Pushwoosh 0%
752.4s
88177ms
880.05
751.8s
631.5s
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: 74% of its sites pass. Firebase Cloud Messaging trails at 64%. computed
The State of Web Vitals · October 2026 · 212,308 crawled sites · phone field datacorewebvitals.io/state-of-cwv
Related signals E-commerce (17) → A/B testing (12) → Video (7) → Maps (4) → 212,308 crawled sites with Chrome field data, representing millions of real page loads · How we measured
212,308 crawled sites with Chrome field data, representing millions of real page loads. How we measured.