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
17
Open Page Rank 8+
704
131
Open Page Rank 7+
2,503
279
Open Page Rank 6+
4,541
399
Open Page Rank 5+
7,397
554
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
61,866
2,305
India
41,088
2,546
Brazil
30,607
999
United Kingdom
22,843
1,006
Germany
20,404
991
Canada
18,587
799
France
18,238
976
Indonesia
17,593
1,336
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Radix UI | W3.CSS |
|---|---|---|
| LCP | 2.4 s | 1.7 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 700 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.