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
13
Open Page Rank 7+
0
54
Open Page Rank 6+
0
128
Open Page Rank 5+
0
221
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
2
2,486
United Kingdom
1
799
India
1
736
Canada
1
611
Australia
1
362
Germany
3
306
Brazil
0
290
Spain
1
282
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Aegea | Substack |
|---|---|---|
| LCP | 1.7 s | 1.6 s |
| INP | 0 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 750 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.