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core-js vs FullStory

Based on 1582 and 14 real audits

View core-js details | View FullStory details
Metriccore-jsFullStoryWinner
Performance3628core-js
Accessibility8891FullStory
Best Practices8486FullStory
SEO9193FullStory
Security6564core-js
TTFB374ms367msFullStory
Composite7271core-js
Performance
core-js
36
FullStory
28
Accessibility
core-js
88
FullStory
91
Security
core-js
65
FullStory
64
SEO
core-js
91
FullStory
93
Composite
core-js
72
FullStory
71

FullStory outperforms core-js in 4 of 7 categories, with a stronger composite score (71 vs 72). core-js leads in performance, security, composite score.

When to choose core-js

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

When to choose FullStory

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

How this comparison was built

Scores are medians across 1582 audited core-js sites and 14 audited FullStory 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 FullStory?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 28 on average).
Which has better security, core-js or FullStory?
core-js sites score higher on security analysis (65 vs 64 on average).
Which has better accessibility, core-js or FullStory?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor FullStory (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 FullStory?
FullStory 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 FullStory?
FullStory sites show lower Time to First Byte (367 ms vs 374 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 FullStory 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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