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+
64
14
Open Page Rank 8+
813
121
Open Page Rank 7+
2,788
268
Open Page Rank 6+
5,011
386
Open Page Rank 5+
8,204
528
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
68,047
2,024
India
45,024
2,142
Brazil
35,199
872
United Kingdom
24,696
868
Germany
21,717
860
Canada
19,501
690
France
19,027
800
Indonesia
18,221
1,103
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 | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 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.