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JSS vs React

Based on 17 and 1402 real audits

View JSS details | View React details
MetricJSSReactWinner
Performance3944React
Accessibility9090Tie
Best Practices8589React
SEO9093React
Security7071React
TTFB324ms462msJSS
Composite7577React
Performance
JSS
39
React
44
Accessibility
JSS
90
React
90
Security
JSS
70
React
71
SEO
JSS
90
React
93
Composite
JSS
75
React
77

React outperforms JSS in 5 of 7 categories, with a stronger composite score (77 vs 75). JSS leads in TTFB.

When to choose JSS

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

When to choose React

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

How this comparison was built

Scores are medians across 17 audited JSS sites and 1402 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 (44 vs 39 on average).
Which has better security, JSS or React?
React sites score higher on security analysis (71 vs 70 on average).
Which has better accessibility, JSS or React?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor JSS (90 vs 90). 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 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), JSS or React?
JSS sites show lower Time to First Byte (324 ms vs 462 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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