Push notifications impact WordPress sites
Performance impact by push_notifications provider.
1
At a glance the headline numbers for Push notifications impact
Performance impact by push_notifications provider.
1
Providers ranked
After min-sites filter
178
Sites in sample
Combined across all items
0.14
Best CLS (p75)
OneSignal
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | OneSignal | 0.14 | 66.4% | 178 |
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
PushEngage 0% 10 0.08
Airship 0% 20 0.08
OneSignal 0.3% 178 0.14
Firebase Cloud Messaging 0% 21 0.32
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
The State of Web Vitals · October 2026 · WordPress sites (63,295) · 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 0.3%
712.7s
9975ms
660.14
632.2s
281.7s
Firebase Cloud Messaging 0%
504.1s
10083ms
400.32
503.9s
304.0s
Airship 0%
1001.7s
10075ms
750.08
1001.4s
551.0s
PushEngage 0%
602.6s
8076ms
800.08
602.5s
252.4s
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.
The State of Web Vitals · October 2026 · WordPress sites (63,295) · desktop field datacorewebvitals.io/state-of-cwv
Related signals E-commerce (17) → A/B testing (12) → Video (7) → Maps (4) → 203,892 crawled sites with Chrome field data, representing millions of real page loads · How we measured
203,892 crawled sites with Chrome field data, representing millions of real page loads. How we measured.