Pure CSS vs ZURB Foundation
Head-to-head usage across the sites we track.
Top sites by authority
Pure CSS · 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
Pure CSS · ZURB Foundation · share of sites in each country using one or the other
United States
4,641
97,282
United Kingdom
1,692
33,264
Germany
1,719
27,418
Canada
1,161
26,635
India
1,531
24,995
France
1,385
23,439
Netherlands
1,188
18,526
Italy
1,227
17,777
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Pure CSS | ZURB Foundation |
|---|---|---|
| LCP | 1.8 s | 1.8 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 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.
Pure CSS to ZURB Foundation
| Domain | When |
|---|---|
| iaept.com | Apr 2026 |
| kokoza.cz | Feb 2026 |
| studios301.com | Sep 2025 |
ZURB Foundation to Pure CSS
| Domain | When |
|---|---|
| miiriya.com | Nov 2025 |