Radix UI vs USWDS
Head-to-head usage across the sites we track.
Top sites by authority
Radix UI · USWDS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
58
22
Open Page Rank 8+
775
144
Open Page Rank 7+
2,707
233
Open Page Rank 6+
4,901
280
Open Page Rank 5+
8,028
318
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 · USWDS · share of sites in each country using one or the other
United States
64,366
610
India
42,500
269
Brazil
32,941
163
United Kingdom
23,181
197
Germany
20,788
152
Canada
18,512
228
France
17,927
131
Indonesia
17,208
150
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Radix UI | USWDS |
|---|---|---|
| LCP | 2.4 s | 1.4 s |
| INP | 125 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 600 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.