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core-js vs SockJS

Based on 1582 and 3 real audits

View core-js details | View SockJS details
Metriccore-jsSockJSWinner
Performance3643SockJS
Accessibility8872core-js
Best Practices8475core-js
SEO9191Tie
Security6563core-js
TTFB374ms243msSockJS
Composite7271core-js
Performance
core-js
36
SockJS
43
Accessibility
core-js
88
SockJS
72
Security
core-js
65
SockJS
63
SEO
core-js
91
SockJS
91
Composite
core-js
72
SockJS
71

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

When to choose core-js

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

When to choose SockJS

Choose SockJS 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 1582 audited core-js sites and 3 audited SockJS 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.

FAQ

Which is faster, core-js or SockJS?
Based on real BeaverCheck audits, SockJS sites score higher on Lighthouse performance (43 vs 36 on average).
Which has better security, core-js or SockJS?
core-js sites score higher on security analysis (65 vs 63 on average).
Which has better accessibility, core-js or SockJS?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 72). 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 SockJS?
core-js sites score higher on Lighthouse SEO signals (91 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 SockJS?
SockJS sites show lower Time to First Byte (243 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 SockJS for my website?
Both platforms have trade-offs. SockJS 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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