Substack vs Svbtle
Head-to-head usage across the sites we track.
Top sites by authority
Substack · Svbtle · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
2
0
Open Page Rank 8+
13
0
Open Page Rank 7+
58
1
Open Page Rank 6+
134
2
Open Page Rank 5+
226
2
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Substack · Svbtle · share of sites in each country using one or the other
United States
2,503
4
United Kingdom
769
1
India
731
4
Canada
614
1
Australia
333
1
Germany
300
1
Spain
294
1
Brazil
284
1
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Substack | Svbtle |
|---|---|---|
| LCP | 1.6 s | 1.3 s |
| INP | 100 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 600 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.