OpenSSL vs Shelf
Head-to-head usage across the sites we track.
Top sites by authority
OpenSSL · Shelf · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
37
0
Open Page Rank 8+
748
1
Open Page Rank 7+
2,406
1
Open Page Rank 6+
4,113
1
Open Page Rank 5+
6,465
1
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
OpenSSL · Shelf · share of sites in each country using one or the other
United States
29,654
11
Japan
22,526
6
India
16,898
5
Brazil
12,786
7
Germany
11,844
6
United Kingdom
11,237
173
South Korea
11,243
6
Italy
11,018
5
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | OpenSSL | Shelf |
|---|---|---|
| LCP | 1.7 s | 1.2 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 300 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.