Animate.css vs Flat UI
Head-to-head usage across the sites we track.
Top sites by authority
Animate.css · Flat UI · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
59
1
Open Page Rank 8+
800
13
Open Page Rank 7+
2,919
25
Open Page Rank 6+
5,688
35
Open Page Rank 5+
10,425
50
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Animate.css · Flat UI · share of sites in each country using one or the other
United States
121,468
311
India
74,963
205
Brazil
57,204
119
Germany
48,702
145
Italy
43,985
131
United Kingdom
41,293
219
France
37,783
120
Spain
36,029
145
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Animate.css | Flat UI |
|---|---|---|
| LCP | 2.2 s | 2 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 900 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.