c15t
@c15t/nextjs@2.2.1
Hosted backend
Score and composition
68Fair · ±1.4
fast desktop · cold cache · p75 of 20 loads
CategoryWeightageScore
Banner Speed30 %41
Page Impact25 %98
Network Cost25 %74
Visitor Experience20 %65
Banner missed on some loads. The banner was detected in 19 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
3.0s
±157 ms across loads
First-paint delay
126ms
Beyond the control's 425 ms · TBT +0 ms
Transferred
59.8KB
Beyond the control's 138.5 KB · +6 requests
Viewport blocked
27.8%
Of the first viewport · clickable 53 ms later
19 of 20 loads completed · time to banner
2.4 smedian 2.8 s4.1 s
Where it sits in the field · 12 installations
60
80
0this provider · 68100
How the banner lands · p75 load
Document
551 msto first paint
Consent request
1.1 svendor script
Script executes
1.5 sconsent layer
Banner visible
3.0 sfrom navigation start
LCP 551 ms · 126 ms later than the controlbanner 3.0 s · covers 27.8%
Across conditions · p75 per condition
| Condition | Score | Rank | Time to banner | Transferred | Viewport blocked | LCP |
|---|---|---|---|---|---|---|
| throttled-mobile · cold | 55Poor | 6 / 12 | 5.9s | 59.8KB | 27.8% | 883ms |
| fast-desktop · cold | 68Fair | 10 / 12 | 3.0s | 59.8KB | 27.8% | 551ms |
Reported, not scored Does not affect the number
DeliveryHosted backend
Package@c15t/nextjs@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