Chart.js vs Epoch
Head-to-head usage across the sites we track.
Top sites by authority
Chart.js · Epoch · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
48
0
Open Page Rank 8+
883
0
Open Page Rank 7+
3,106
2
Open Page Rank 6+
5,438
2
Open Page Rank 5+
8,607
3
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 · Epoch · share of sites in each country using one or the other
United States
48,182
15
India
25,375
12
Germany
21,390
6
Italy
19,374
6
United Kingdom
18,271
9
Brazil
18,003
9
Spain
17,614
7
France
17,096
9
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Chart.js | Epoch |
|---|---|---|
| LCP | 2.2 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 900 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.