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cdnjs vs SockJS

Based on 358 and 3 real audits

View cdnjs details | View SockJS details
MetriccdnjsSockJSWinner
Performance3943SockJS
Accessibility8872cdnjs
Best Practices8675cdnjs
SEO9091SockJS
Security6563cdnjs
TTFB366ms243msSockJS
Composite7371cdnjs
Performance
cdnjs
39
SockJS
43
Accessibility
cdnjs
88
SockJS
72
Security
cdnjs
65
SockJS
63
SEO
cdnjs
90
SockJS
91
Composite
cdnjs
73
SockJS
71

cdnjs outperforms SockJS in 4 of 7 categories, with a stronger composite score (73 vs 71). SockJS leads in performance, SEO, TTFB.

When to choose cdnjs

Choose cdnjs 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 358 audited cdnjs 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, cdnjs or SockJS?
Based on real BeaverCheck audits, SockJS sites score higher on Lighthouse performance (43 vs 39 on average).
Which has better security, cdnjs or SockJS?
cdnjs sites score higher on security analysis (65 vs 63 on average).
Which has better accessibility, cdnjs or SockJS?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor cdnjs (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, cdnjs or SockJS?
SockJS sites score higher on Lighthouse SEO signals (91 vs 90 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), cdnjs or SockJS?
SockJS sites show lower Time to First Byte (243 ms vs 366 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 cdnjs or SockJS for my website?
Both platforms have trade-offs. SockJS scores higher on overall composite score while cdnjs 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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