Amex Express Checkout vs Mastercard
Head-to-head usage across the sites we track.
Top sites by authority
Amex Express Checkout · 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+
2
146
Open Page Rank 7+
2
519
Open Page Rank 6+
3
1,050
Open Page Rank 5+
4
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
Amex Express Checkout · Mastercard · share of sites in each country using one or the other
United States
25
123,683
United Kingdom
15
48,463
Germany
10
35,005
Canada
11
34,062
Australia
9
31,725
France
10
28,333
Italy
14
22,033
India
15
21,187
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Amex Express Checkout | Mastercard |
|---|---|---|
| LCP | 3 s | 1.4 s |
| INP | 100 ms | 75 ms |
| CLS | 0.15 | 0 |
| TTFB | 1200 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.