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core-js vs Express

Based on 1637 and 70 real audits

View core-js details | View Express details
Metriccore-jsExpressWinner
Performance3639Express
Accessibility8886core-js
Best Practices8485Express
SEO9192Express
Security6566Express
TTFB385ms245msExpress
Composite7372core-js
Performance
core-js
36
Express
39
Accessibility
core-js
88
Express
86
Security
core-js
65
Express
66
SEO
core-js
91
Express
92
Composite
core-js
73
Express
72

Express outperforms core-js in 5 of 7 categories, with a stronger composite score (72 vs 73). core-js leads in accessibility, composite score.

When to choose core-js

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

When to choose Express

Choose Express 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 1637 audited core-js sites and 70 audited Express 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 Express?
Based on real BeaverCheck audits, Express sites score higher on Lighthouse performance (39 vs 36 on average).
Which has better security, core-js or Express?
Express sites score higher on security analysis (66 vs 65 on average).
Which has better accessibility, core-js or Express?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 86). 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 Express?
Express sites score higher on Lighthouse SEO signals (92 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 Express?
Express sites show lower Time to First Byte (245 ms vs 385 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 Express for my website?
Both platforms have trade-offs. Express 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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