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
0
Open Page Rank 7+
1
3
Open Page Rank 6+
1
8
Open Page Rank 5+
2
14
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
91
India
3
85
United Kingdom
3
35
Canada
3
33
Germany
6
28
France
5
23
Indonesia
4
22
Australia
1
25
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Isso | Vuukle |
|---|---|---|
| LCP | 2 s | 2.8 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0.1 |
| 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.