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Cloudflare vs X-Clacks-Overhead

Based on 2102 and 19 real audits

View Cloudflare details | View X-Clacks-Overhead details
MetricCloudflareX-Clacks-OverheadWinner
Performance4948Cloudflare
Accessibility8888Tie
Best Practices8685Cloudflare
SEO8988Cloudflare
Security6871X-Clacks-Overhead
TTFB296ms322msCloudflare
Composite7476X-Clacks-Overhead
Performance
Cloudflare
49
X-Clacks-Overhead
48
Accessibility
Cloudflare
88
X-Clacks-Overhead
88
Security
Cloudflare
68
X-Clacks-Overhead
71
SEO
Cloudflare
89
X-Clacks-Overhead
88
Composite
Cloudflare
74
X-Clacks-Overhead
76

Cloudflare outperforms X-Clacks-Overhead in 4 of 7 categories, with a stronger composite score (74 vs 76). X-Clacks-Overhead leads in security, composite score.

When to choose Cloudflare

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

When to choose X-Clacks-Overhead

Choose X-Clacks-Overhead when your primary concern is security. 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 19 audited X-Clacks-Overhead 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 X-Clacks-Overhead?
Based on real BeaverCheck audits, Cloudflare sites score higher on Lighthouse performance (49 vs 48 on average).
Which has better security, Cloudflare or X-Clacks-Overhead?
X-Clacks-Overhead sites score higher on security analysis (71 vs 68 on average).
Which has better accessibility, Cloudflare or X-Clacks-Overhead?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Cloudflare (88 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 X-Clacks-Overhead?
Cloudflare sites score higher on Lighthouse SEO signals (89 vs 88 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 X-Clacks-Overhead?
Cloudflare sites show lower Time to First Byte (296 ms vs 322 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 X-Clacks-Overhead 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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