c15t
@c15t/react@2.2.1
Hosted backend
Score and composition
54Poor · ±5.6
throttled mobile · cold cache · p75 of 20 loads
CategoryWeightageScore
Banner Speed30 %0
Page Impact25 %90
Network Cost25 %74
Visitor Experience20 %64
Banner missed on some loads. The banner was detected in 15 of 20 loads on this condition. The score is computed from the loads in which it appeared; the missed loads are counted here, not hidden.
Time to banner
5.4s
±758 ms across loads
First-paint delay
349ms
Beyond the control's 621 ms · TBT +53 ms
Transferred
59.8KB
Beyond the control's 138.5 KB · +6 requests
Viewport blocked
27.8%
Of the first viewport · clickable 61 ms later
15 of 20 loads completed · time to banner
4.0 smedian 4.7 s6.9 s
Where it sits in the field · 12 installations
60
80
0this provider · 54100
How the banner lands · p75 load
Document
970 msto first paint
Consent request
2.0 svendor script
Script executes
2.7 sconsent layer
Banner visible
5.4 sfrom navigation start
LCP 970 ms · 349 ms later than the controlbanner 5.4 s · covers 27.8%
Across conditions · p75 per condition
| Condition | Score | Rank | Time to banner | Transferred | Viewport blocked | LCP |
|---|---|---|---|---|---|---|
| throttled-mobile · cold | 54Poor | 7 / 12 | 5.4s | 59.8KB | 27.8% | 970ms |
| fast-desktop · cold | 69Fair | 9 / 12 | 2.9s | 59.7KB | 27.8% | 464ms |
Reported, not scored Does not affect the number
DeliveryHosted backend
Package@c15t/react@2.2.1
Framework of the test appNext.js 16.3.4
LanguageTypeScript / JavaScript
Bundle typeApp-bundled package
SDK licenceApache-2.0
Open source SDKYes (package license)
Deployed15 Sep 2026
Loads in this run20 per condition · 2 conditions