c15t React – Fast desktop benchmark
@c15t/react@2.2.1
Hosted backend
This page shows c15t React under the fast-desktop profile: desktop Chromium with no CPU or network throttling. Every load is cold, and each figure is the p75 of 20 loads in the run of 24 Sep 2026. c15t React scored 83/100 (Good) and ranked 7th of the 12 tested installations. The banner appeared in 1.2 s (time to banner) and the page transferred 58.8 KB more than the no-SDK control (bytes over the wire). It delayed first paint by 25 ms (FCP) and added no Total Blocking Time (TBT), and the banner covered 9.0 % of the first viewport (viewport coverage).
Score and composition
83Good · ±0.3
fast desktop · cold cache · p75 of 20 loads
CategoryWeightageScore
Banner Speed30 %76
Page Impact25 %100
Network Cost25 %74
Visitor Experience20 %87
Time to banner
1.2s
±36 ms across loads
First-paint delay
25ms
Beyond the control's 58 ms · TBT +0 ms
Transferred
58.8KB
Beyond the control's 135.9 KB · +6 requests
Viewport blocked
9.0%
Of the first viewport · clickable 67 ms later
20 loads · time to banner
1.1 smedian 1.2 s1.7 s
Where it sits in the field · 12 installations
60
80
0this provider · 83100
How the banner lands · p75 load
Document
83 msto first paint
Consent request
475 msvendor script
Script executes
642 msconsent layer
Banner visible
1.2 sfrom navigation start
LCP 83 ms · 25 ms later than the controlbanner 1.2 s · covers 9.0%
Across conditions · p75 per condition
| Condition | Score | Rank | Time to banner | Transferred | Viewport blocked | LCP |
|---|---|---|---|---|---|---|
| fast-desktop · cold | 83Good | 7 / 12 | 1.2s | 58.8KB | 9.0% | 83ms |
| throttled-mobile · cold | 73Fair | 6 / 12 | 2.7s | 58.8KB | 9.0% | 668ms |
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