| Metric | Chart.js | core-js | Winner |
|---|---|---|---|
| Performance | 39 | 36 | Chart.js |
| Accessibility | 87 | 88 | core-js |
| Best Practices | 89 | 84 | Chart.js |
| SEO | 91 | 91 | Tie |
| Security | 65 | 65 | Tie |
| TTFB | 449ms | 385ms | core-js |
| Composite | 72 | 73 | core-js |
core-js outperforms Chart.js in 3 of 7 categories, with a stronger composite score (73 vs 72). Chart.js leads in performance, best practices.
Choose Chart.js when your primary concern is best practices and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Choose core-js when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 27 audited Chart.js sites and 1627 audited core-js 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 →
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