c15t Next.js Offline – Fast desktop benchmark
@c15t/nextjs@2.2.1 (offline)
Self-hosted npm
This page shows c15t Next.js 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 Next.js Offline scored 92/100 (Good) and ranked 3rd of the 12 tested installations. The banner appeared in 199 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 14 ms (FCP) and added no Total Blocking Time (TBT), and the banner covered 9.0 % of the first viewport (viewport coverage).
Score and composition
92Good · ±0.2
fast desktop · cold cache · p75 of 20 loads
CategoryWeightageScore
Banner Speed30 %96
Page Impact25 %100
Network Cost25 %82
Visitor Experience20 %87
Time to banner
199ms
±13 ms across loads
First-paint delay
14ms
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
179 msmedian 192 ms274 ms
Where it sits in the field · 12 installations
60
80
0this provider · 92100
How the banner lands · p75 load
Document
72 msto first paint
Consent request
none · in the bundle
—no extra requestScript executes
150 msconsent layer
Banner visible
199 msfrom navigation start
LCP 72 ms · 14 ms later than the controlbanner 199 ms · covers 9.0%
Across conditions · p75 per condition
| Condition | Score | Rank | Time to banner | Transferred | Viewport blocked | LCP |
|---|---|---|---|---|---|---|
| fast-desktop · cold | 92Good | 3 / 12 | 199ms | 58.8KB | 9.0% | 72ms |
| throttled-mobile · cold | 80Good | 4 / 12 | 1.7s | 58.8KB | 9.0% | 649ms |
Reported, not scored Does not affect the number
DeliverySelf-hosted npm
Package@c15t/nextjs@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