Chart.js vs uPlot
Head-to-head usage across the sites we track.
Top sites by authority
Chart.js · uPlot · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
48
1
Open Page Rank 8+
883
1
Open Page Rank 7+
3,106
1
Open Page Rank 6+
5,438
2
Open Page Rank 5+
8,607
4
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Chart.js · uPlot · share of sites in each country using one or the other
United States
48,182
10
India
25,375
8
Germany
21,390
8
Italy
19,374
3
United Kingdom
18,271
5
Brazil
18,003
5
Spain
17,614
4
France
17,096
3
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Chart.js | uPlot |
|---|---|---|
| LCP | 2.2 s | 2 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 600 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.