| Metric | core-js | Salesforce | Winner |
|---|---|---|---|
| Performance | 36 | 31 | core-js |
| Accessibility | 88 | 88 | Tie |
| Best Practices | 84 | 84 | Tie |
| SEO | 91 | 88 | core-js |
| Security | 65 | 64 | core-js |
| TTFB | 374ms | 367ms | Salesforce |
| Composite | 72 | 71 | core-js |
core-js outperforms Salesforce in 4 of 7 categories, with a stronger composite score (72 vs 71). Salesforce leads in TTFB.
Choose core-js when your primary concern is performance and SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Salesforce when your primary concern is server response time. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 1582 audited core-js sites and 25 audited Salesforce 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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