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Cloudflare vs Substack

Based on 2145 and 2 real audits

View Cloudflare details | View Substack details
MetricCloudflareSubstackWinner
Performance4946Cloudflare
Accessibility8872Cloudflare
Best Practices8677Cloudflare
SEO8992Substack
Security6862Cloudflare
TTFB298ms228msSubstack
Composite7573Cloudflare
Performance
Cloudflare
49
Substack
46
Accessibility
Cloudflare
88
Substack
72
Security
Cloudflare
68
Substack
62
SEO
Cloudflare
89
Substack
92
Composite
Cloudflare
75
Substack
73

Cloudflare outperforms Substack in 5 of 7 categories, with a stronger composite score (75 vs 73). Substack leads in SEO, TTFB.

When to choose Cloudflare

Choose Cloudflare 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 SEO. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 2145 audited Cloudflare 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, Cloudflare or Substack?
Based on real BeaverCheck audits, Cloudflare sites score higher on Lighthouse performance (49 vs 46 on average).
Which has better security, Cloudflare or Substack?
Cloudflare sites score higher on security analysis (68 vs 62 on average).
Which has better accessibility, Cloudflare or Substack?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Cloudflare (88 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, Cloudflare or Substack?
Substack sites score higher on Lighthouse SEO signals (92 vs 89 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), Cloudflare or Substack?
Substack sites show lower Time to First Byte (228 ms vs 298 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 Cloudflare or Substack for my website?
Both platforms have trade-offs. Cloudflare scores higher on overall composite score while Cloudflare 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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