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Substack

Based on 1 real audits

55
Avg. Performance
70
Avg. Accessibility
77
Avg. Best Practices
92
Avg. SEO
56
Avg. Security
72
Avg. Composite
55 /100
Avg. Performance
201 ms
Avg. TTFB
72 /100
Avg. Composite
1
Sites Audited

How Substack sites compare

Substack sites perform above average with a mean Lighthouse performance score of 55/100, compared to the global average of 47/100.

Recent Audits

SitePerformanceGradeAudited
www.substack.com55C2026-04-07

Commonly Used With

Sites that use Substack also commonly use:

Tailwind CSS Framework 1Sentry Issue trackers 1React Router JavaScript frameworks 1React JavaScript frameworks 1Open Graph Miscellaneous 1Node.js Programming languages 1Lucide Font scripts 1iOS app Other 1HTTP/3 Miscellaneous 1HSTS Security 1

Compare with...

Substack vs Tailwind CSSSubstack vs SentrySubstack vs React RouterSubstack vs ReactSubstack vs Open GraphSubstack vs Node.jsSubstack vs LucideSubstack vs iOS appSubstack vs HTTP/3Substack vs HSTS

FAQ

What is the average Lighthouse performance score for Substack sites?
Based on 1 real audits, Substack sites score an average of 55/100 on Lighthouse performance.
How does Substack compare on web security?
Substack sites score an average security grade of 56/100 in BeaverCheck audits.
What is the average page load time for Substack websites?
The average Time to First Byte (TTFB) for Substack sites is 201ms based on 1 audits.
How can I improve my Substack site's performance?
Run a free audit on BeaverCheck to get specific recommendations for your Substack site. Common issues include render-blocking resources, unoptimized images, and missing caching headers.

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