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JSS vs React

Based on 15 and 1231 real audits

View JSS details | View React details
MetricJSSReactWinner
Performance4143React
Accessibility9089JSS
Best Practices8488React
SEO8993React
Security6970React
TTFB293ms406msJSS
Composite7476React
Performance
JSS
41
React
43
Accessibility
JSS
90
React
89
Security
JSS
69
React
70
SEO
JSS
89
React
93
Composite
JSS
74
React
76

React outperforms JSS in 5 of 7 categories, with a stronger composite score (76 vs 74). JSS leads in accessibility, TTFB.

When to choose JSS

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

When to choose React

Choose React when your primary concern is best practices and SEO. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 15 audited JSS sites and 1231 audited React 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, JSS or React?
Based on real BeaverCheck audits, React sites score higher on Lighthouse performance (43 vs 41 on average).
Which has better security, JSS or React?
React sites score higher on security analysis (70 vs 69 on average).
Which has better accessibility, JSS or React?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor JSS (90 vs 89). 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, JSS or React?
React sites score higher on Lighthouse SEO signals (93 vs 89 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), JSS or React?
JSS sites show lower Time to First Byte (293 ms vs 406 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 JSS or React for my website?
Both platforms have trade-offs. React scores higher on overall composite score while JSS 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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