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
137
Open Page Rank 8+
0
2,703
Open Page Rank 7+
0
11,962
Open Page Rank 6+
0
23,853
Open Page Rank 5+
0
42,992
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
67
368,014
India
61
210,834
Japan
41
160,828
United Kingdom
45
137,098
Brazil
48
112,896
France
43
104,936
Canada
38
97,673
Germany
43
91,482
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Arc | cdnjs |
|---|---|---|
| LCP | 1.8 s | 1.9 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Sep 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 |