c15t
@c15t/react@2.2.1
Hosted backend
Score and composition
69Fair · ±3.4
fast desktop · cold cache · p75 of 20 loads
CategoryWeightageScore
Banner Speed30 %41
Page Impact25 %99
Network Cost25 %74
Visitor Experience20 %67
Banner missed on some loads. The banner was detected in 16 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
2.9s
±482 ms across loads
First-paint delay
39ms
Beyond the control's 425 ms · TBT +9 ms
Transferred
59.7KB
Beyond the control's 138.5 KB · +6 requests
Viewport blocked
27.8%
Of the first viewport · clickable 0 ms later
16 of 20 loads completed · time to banner
2.5 smedian 2.7 s3.7 s
Where it sits in the field · 12 installations
60
80
0this provider · 69100
How the banner lands · p75 load
Document
464 msto first paint
Consent request
1.1 svendor script
Script executes
1.5 sconsent layer
Banner visible
2.9 sfrom navigation start
LCP 464 ms · 39 ms later than the controlbanner 2.9 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