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
4,175
87,178
United Kingdom
1,491
29,173
Germany
1,437
24,259
Canada
1,018
23,316
India
1,376
22,314
France
1,129
19,373
Netherlands
1,005
16,190
Australia
854
15,569
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 | 900 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.
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 |