| Metric | AdRiver | core-js | Winner |
|---|---|---|---|
| Performance | 37 | 36 | AdRiver |
| Accessibility | 67 | 88 | core-js |
| Best Practices | 87 | 84 | AdRiver |
| SEO | 98 | 91 | AdRiver |
| Security | 66 | 66 | Tie |
| TTFB | 412ms | 387ms | core-js |
| Composite | 70 | 73 | core-js |
AdRiver and core-js are closely matched, each leading in different categories. AdRiver has a composite score of 70 while core-js scores 73.
Choose AdRiver when your primary concern is SEO and best practices. 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 4 audited AdRiver sites and 1650 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 →
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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