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Cloudflare vs Fly.io

Based on 2102 and 10 real audits

View Cloudflare details | View Fly.io details
MetricCloudflareFly.ioWinner
Performance4972Fly.io
Accessibility8892Fly.io
Best Practices8699Fly.io
SEO8986Cloudflare
Security6875Fly.io
TTFB296ms1210msCloudflare
Composite7482Fly.io
Performance
Cloudflare
49
Fly.io
72
Accessibility
Cloudflare
88
Fly.io
92
Security
Cloudflare
68
Fly.io
75
SEO
Cloudflare
89
Fly.io
86
Composite
Cloudflare
74
Fly.io
82

Fly.io outperforms Cloudflare in 5 of 7 categories, with a stronger composite score (82 vs 74). Cloudflare leads in SEO, TTFB.

When to choose Cloudflare

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

When to choose Fly.io

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

How this comparison was built

Scores are medians across 2102 audited Cloudflare sites and 10 audited Fly.io 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 →

FAQ

Which is faster, Cloudflare or Fly.io?
Based on real BeaverCheck audits, Fly.io sites score higher on Lighthouse performance (72 vs 49 on average).
Which has better security, Cloudflare or Fly.io?
Fly.io sites score higher on security analysis (75 vs 68 on average).
Which has better accessibility, Cloudflare or Fly.io?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Fly.io (92 vs 88). 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 Fly.io?
Cloudflare sites score higher on Lighthouse SEO signals (89 vs 86 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 Fly.io?
Cloudflare sites show lower Time to First Byte (296 ms vs 1210 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 Fly.io for my website?
Both platforms have trade-offs. Fly.io 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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