| Metric | ButterCMS | cdnjs | Winner |
|---|---|---|---|
| Performance | 30 | 40 | cdnjs |
| Accessibility | 86 | 88 | cdnjs |
| Best Practices | 88 | 86 | ButterCMS |
| SEO | 92 | 90 | ButterCMS |
| Security | 59 | 65 | cdnjs |
| TTFB | 367ms | 367ms | Tie |
| Composite | 71 | 73 | cdnjs |
cdnjs outperforms ButterCMS in 4 of 7 categories, with a stronger composite score (73 vs 71). ButterCMS leads in best practices, SEO.
Choose ButterCMS when your primary concern is best practices and SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Choose cdnjs when your primary concern is performance and security. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1 audited ButterCMS sites and 373 audited cdnjs 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.
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