K2 vs Open Graph
Head-to-head usage across the sites we track.
Top sites by authority
K2 · Open Graph · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
276
Open Page Rank 8+
15
6,000
Open Page Rank 7+
35
33,096
Open Page Rank 6+
43
75,611
Open Page Rank 5+
76
150,933
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
K2 · Open Graph · share of sites in each country using one or the other
United States
309
1,888,853
India
120
663,379
Germany
319
633,567
Japan
54
613,377
United Kingdom
164
593,100
Brazil
102
547,908
France
154
518,319
Italy
342
418,507
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | K2 | Open Graph |
|---|---|---|
| LCP | 1.9 s | 1.9 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 800 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.
K2 to Open Graph
| Domain | When |
|---|---|
| fairclothreynolds.com.au | Jul 2026 |
| weidelsburg.de | May 2026 |