Arc vs cdnjs
Head-to-head usage across the sites we track.
Top sites by authority
Arc · cdnjs · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
139
Open Page Rank 8+
0
2,725
Open Page Rank 7+
0
12,111
Open Page Rank 6+
0
24,177
Open Page Rank 5+
0
43,560
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Arc · cdnjs · share of sites in each country using one or the other
United States
68
374,455
India
62
213,663
Japan
41
163,202
United Kingdom
46
136,403
Brazil
48
115,153
France
44
104,770
Canada
42
97,923
Germany
41
94,533
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Arc | cdnjs |
|---|---|---|
| LCP | 2.1 s | 1.9 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 1000 ms | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Arc to cdnjs
| Domain | When |
|---|---|
| modagamers.com | Oct 2025 |