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
0.11
Best CLS (p75)
OneSignal
The State of Web Vitals · Q2 2026 · 189,915 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 | 0.11 | 71.9% | 341 | |
| 2 | Firebase Cloud Messaging | 0.15 | 65.3% | 207 | |
| 3 | Airship | 0.21 | 56.6% | 55 |
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Pushwoosh 0%
8
0.10
PushEngage 0%
20
0.10
OneSignal 0.2%
341
0.11
Firebase Cloud Messaging 0.1%
207
0.15
Airship 0%
55
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
72% of OneSignal sites pass CLS. Firebase Cloud Messaging trails 7 points behind, leaving 35% of its sites failing. computed
The State of Web Vitals · Q2 2026 · 189,915 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
89158ms
720.11
582.3s
491.4s
Firebase Cloud Messaging 0.1%
712.7s
93137ms
650.15
781.7s
67929ms
Airship 0%
792.2s
100134ms
570.21
741.8s
581.0s
PushEngage 0%
742.5s
78197ms
740.10
682.3s
221.7s
Pushwoosh 0%
752.4s
88154ms
880.10
751.8s
631.4s
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: 72% of its sites pass. Firebase Cloud Messaging trails at 65%. computed
The State of Web Vitals · Q2 2026 · 189,915 sites · all devices field datacorewebvitals.io/state-of-cwv
Related signals
E-commerce (14) →
A/B testing (10) →
Video (7) →
Maps (4) →
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.