Isso vs Vuukle
Head-to-head usage across the sites we track.
Top sites by authority
Isso · Vuukle · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 8+
1
1
Open Page Rank 7+
1
4
Open Page Rank 6+
1
9
Open Page Rank 5+
2
16
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Isso · Vuukle · share of sites in each country using one or the other
United States
5
98
India
3
100
United Kingdom
3
40
Canada
3
39
Germany
8
29
Australia
2
33
France
6
26
Philippines
2
29
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Isso | Vuukle |
|---|---|---|
| LCP | 2 s | 3 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0.05 |
| TTFB | 400 ms | 900 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.