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core-js vs Firework

Based on 1840 and 10 real audits

View core-js details | View Firework details
Metriccore-jsFireworkWinner
Performance3724core-js
Accessibility8887core-js
Best Practices8577core-js
SEO9195Firework
Security6764core-js
TTFB439ms161msFirework
Composite7472core-js
Performance
core-js
37
Firework
24
Accessibility
core-js
88
Firework
87
Security
core-js
67
Firework
64
SEO
core-js
91
Firework
95
Composite
core-js
74
Firework
72

core-js outperforms Firework in 5 of 7 categories, with a stronger composite score (74 vs 72). Firework leads in SEO, TTFB.

When to choose core-js

Choose core-js when your primary concern is performance and best practices. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Firework

Choose Firework when your primary concern is server response time and SEO. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 1840 audited core-js sites and 10 audited Firework 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 →

FAQ

Which is faster, core-js or Firework?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (37 vs 24 on average).
Which has better security, core-js or Firework?
core-js sites score higher on security analysis (67 vs 64 on average).
Which has better accessibility, core-js or Firework?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 87). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, core-js or Firework?
Firework sites score higher on Lighthouse SEO signals (95 vs 91 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), core-js or Firework?
Firework sites show lower Time to First Byte (161 ms vs 439 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose core-js or Firework for my website?
Both platforms have trade-offs. core-js scores higher on overall composite score while core-js may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
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