JUST vs Mastercard
Head-to-head usage across the sites we track.
Top sites by authority
JUST · Mastercard · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
13
Open Page Rank 8+
0
143
Open Page Rank 7+
0
505
Open Page Rank 6+
1
1,057
Open Page Rank 5+
1
2,086
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
JUST · Mastercard · share of sites in each country using one or the other
United States
57
135,747
United Kingdom
45
52,625
Canada
47
37,821
Germany
59
37,542
Australia
11
34,444
France
193
31,057
India
19
23,507
Italy
45
23,144
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | JUST | Mastercard |
|---|---|---|
| LCP | 1.7 s | 1.4 s |
| INP | 125 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 400 ms | 400 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
JUST to Mastercard
| Domain | When |
|---|---|
| myarchie.co | Aug 2025 |