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+
704
147
Open Page Rank 7+
2,503
231
Open Page Rank 6+
4,541
277
Open Page Rank 5+
7,397
317
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
61,866
668
India
41,088
295
Brazil
30,607
174
United Kingdom
22,843
217
Germany
20,404
182
Canada
18,587
262
France
18,238
171
Indonesia
17,593
183
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 | 100 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 600 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.