Semantic UI vs ZURB Foundation
Head-to-head usage across the sites we track.
Top sites by authority
Semantic UI · ZURB Foundation · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Semantic UI · ZURB Foundation · share of sites in each country using one or the other
United States
2,598
97,282
United Kingdom
1,446
33,264
Germany
1,531
27,418
Canada
1,170
26,635
India
1,776
24,995
France
1,308
23,439
Netherlands
1,231
18,526
Italy
1,045
17,777
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Semantic UI | ZURB Foundation |
|---|---|---|
| LCP | 1.9 s | 1.8 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 800 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
ZURB Foundation to Semantic UI
| Domain | When |
|---|---|
| emiratesflags.ae | May 2026 |
| snakeriverfloattours.com | Mar 2026 |
| codesfornow.com | Nov 2025 |