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
146
Open Page Rank 7+
0
519
Open Page Rank 6+
1
1,050
Open Page Rank 5+
1
2,062
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
51
123,683
United Kingdom
40
48,463
Germany
44
35,005
Canada
40
34,062
Australia
12
31,725
France
162
28,333
Italy
41
22,033
India
23
21,187
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 | 500 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Mastercard to JUST
| Domain | When |
|---|---|
| youandmilk.com | May 2026 |