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React vs Substack

Based on 1039 and 2 real audits

View React details | View Substack details
MetricReactSubstackWinner
Performance3946Substack
Accessibility8972React
Best Practices8777React
SEO9392React
Security6762React
TTFB342ms228msSubstack
Composite7473React
Performance
React
39
Substack
46
Accessibility
React
89
Substack
72
Security
React
67
Substack
62
SEO
React
93
Substack
92
Composite
React
74
Substack
73

React outperforms Substack in 5 of 7 categories, with a stronger composite score (74 vs 73). Substack leads in performance, TTFB.

When to choose React

Choose React when your primary concern is accessibility and best practices. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Substack

Choose Substack when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 1039 audited React sites and 2 audited Substack sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.

FAQ

Which is faster, React or Substack?
Based on real BeaverCheck audits, Substack sites score higher on Lighthouse performance (46 vs 39 on average).
Which has better security, React or Substack?
React sites score higher on security analysis (67 vs 62 on average).
Which has better accessibility, React or Substack?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor React (89 vs 72). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, React or Substack?
React sites score higher on Lighthouse SEO signals (93 vs 92 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), React or Substack?
Substack sites show lower Time to First Byte (228 ms vs 342 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose React or Substack for my website?
Both platforms have trade-offs. Substack scores higher on overall composite score while React may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
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