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core-js vs Gatsby

Based on 1627 and 36 real audits

View core-js details | View Gatsby details
Metriccore-jsGatsbyWinner
Performance3642Gatsby
Accessibility8891Gatsby
Best Practices8490Gatsby
SEO9193Gatsby
Security6566Gatsby
TTFB385ms238msGatsby
Composite7375Gatsby
Performance
core-js
36
Gatsby
42
Accessibility
core-js
88
Gatsby
91
Security
core-js
65
Gatsby
66
SEO
core-js
91
Gatsby
93
Composite
core-js
73
Gatsby
75

Gatsby outperforms core-js in 7 of 7 categories, with a stronger composite score (75 vs 73). core-js leads in no categories.

When to choose core-js

core-js doesn't clearly lead Gatsby in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

When to choose Gatsby

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

How this comparison was built

Scores are medians across 1627 audited core-js sites and 36 audited Gatsby 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 Gatsby?
Based on real BeaverCheck audits, Gatsby sites score higher on Lighthouse performance (42 vs 36 on average).
Which has better security, core-js or Gatsby?
Gatsby sites score higher on security analysis (66 vs 65 on average).
Which has better accessibility, core-js or Gatsby?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Gatsby (91 vs 88). 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 Gatsby?
Gatsby sites score higher on Lighthouse SEO signals (93 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 Gatsby?
Gatsby sites show lower Time to First Byte (238 ms vs 385 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 Gatsby for my website?
Both platforms have trade-offs. Gatsby 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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