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+
52
0
Open Page Rank 8+
903
0
Open Page Rank 7+
3,177
2
Open Page Rank 6+
5,538
2
Open Page Rank 5+
8,772
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
54,017
15
India
28,724
12
Germany
24,266
7
Italy
22,638
5
United Kingdom
20,687
9
Spain
20,634
8
France
20,440
10
Brazil
19,935
10
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Chart.js | Epoch |
|---|---|---|
| LCP | 2.2 s | 1.8 s |
| INP | 75 ms | 62 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.