Radix UI vs W3.CSS
Head-to-head usage across the sites we track.
Top sites by authority
Radix UI · W3.CSS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
58
15
Open Page Rank 8+
775
125
Open Page Rank 7+
2,707
274
Open Page Rank 6+
4,901
391
Open Page Rank 5+
8,028
537
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Radix UI · W3.CSS · share of sites in each country using one or the other
United States
64,366
2,038
India
42,500
2,209
Brazil
32,941
900
United Kingdom
23,181
878
Germany
20,788
889
Canada
18,512
700
France
17,927
814
Indonesia
17,208
1,104
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Radix UI | W3.CSS |
|---|---|---|
| LCP | 2.4 s | 1.6 s |
| INP | 125 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 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.