Based on 7 and 4 real audits
| Metric | Mapbox GL JS | Mapbox.js | Winner |
|---|---|---|---|
| Performance | 35 | 36 | Mapbox.js |
| Accessibility | 88 | 84 | Mapbox GL JS |
| Best Practices | 89 | 85 | Mapbox GL JS |
| SEO | 85 | 85 | Tie |
| Security | 72 | 69 | Mapbox GL JS |
| TTFB | 325ms | 470ms | Mapbox GL JS |
| Composite | 75 | 73 | Mapbox GL JS |
Mapbox GL JS outperforms Mapbox.js in 5 of 7 categories, with a stronger composite score (75 vs 73). Mapbox.js leads in performance.
Choose Mapbox GL JS when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Mapbox.js when your primary concern is performance. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 7 audited Mapbox GL JS sites and 4 audited Mapbox.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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