c15t React Offline – Fast desktop benchmark
@c15t/react@2.2.1 (offline)
Self-hosted npm
This page shows c15t React Offline 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 Offline scored 91/100 (Good) and ranked 4th of the 12 tested installations. The banner appeared in 216 ms (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 24 ms (FCP) and added no Total Blocking Time (TBT), and the banner covered 9.0 % of the first viewport (viewport coverage).
Score and composition
91Good · ±0.6
fast desktop · cold cache · p75 of 20 loads
CategoryWeightageScore
Banner Speed30 %96
Page Impact25 %100
Network Cost25 %82
Visitor Experience20 %87
Time to banner
216ms
±77 ms across loads
First-paint delay
24ms
Beyond the control's 58 ms · TBT +0 ms
Transferred
58.8KB
Beyond the control's 135.9 KB · +2 requests
Viewport blocked
9.0%
Of the first viewport · clickable 66 ms later
20 loads · time to banner
175 msmedian 196 ms416 ms
Where it sits in the field · 12 installations
60
80
0this provider · 91100
How the banner lands · p75 load
Document
82 msto first paint
Consent request
none · in the bundle
—no extra requestScript executes
160 msconsent layer
Banner visible
216 msfrom navigation start
LCP 82 ms · 24 ms later than the controlbanner 216 ms · covers 9.0%
Across conditions · p75 per condition
| Condition | Score | Rank | Time to banner | Transferred | Viewport blocked | LCP |
|---|---|---|---|---|---|---|
| fast-desktop · cold | 91Good | 4 / 12 | 216ms | 58.8KB | 9.0% | 82ms |
| throttled-mobile · cold | 80Good | 4 / 12 | 1.7s | 58.8KB | 9.0% | 652ms |
Reported, not scored Does not affect the number
DeliverySelf-hosted npm
Package@c15t/react@2.2.1 (offline)
Framework of the test appNext.js 16.3.4
LanguageTypeScript / JavaScript
Bundle typeApp-bundled package
SDK licenceNot recorded
Open source SDKNot recorded
Deployed23 Sep 2026
Loads in this run20 per condition · 2 conditions