Aegea vs Substack
Head-to-head usage across the sites we track.
Top sites by authority
Aegea · Substack · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
2
Open Page Rank 8+
0
12
Open Page Rank 7+
0
57
Open Page Rank 6+
0
134
Open Page Rank 5+
0
226
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Aegea · Substack · share of sites in each country using one or the other
United States
1
2,503
United Kingdom
1
769
India
1
731
Canada
1
614
Australia
1
333
Germany
1
300
Spain
1
294
Brazil
0
284
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Aegea | Substack |
|---|---|---|
| LCP | 1.6 s | 1.6 s |
| INP | 37 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 500 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.