Cart Functionality vs Fbits
Head-to-head usage across the sites we track.
Detections for Fbits end in Mar 2024. The fingerprint catalog behind our crawls no longer carries that technology as its own entry, usually because it was retired or split into more specific ones, so its figure is the last recorded and is not directly comparable with a currently tracked technology.
Top sites by authority
Cart Functionality · Fbits · 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
Cart Functionality · Fbits · share of sites in each country using one or the other
United States
737,680
11
United Kingdom
239,464
0
India
207,201
2
Germany
196,505
0
France
181,709
1
Canada
166,395
0
Brazil
145,168
223
Italy
138,310
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Cart Functionality | Fbits |
|---|---|---|
| LCP | 1.7 s | 1.8 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 700 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.