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core-js vs Create React App

Based on 1599 and 2 real audits

View core-js details | View Create React App details
Metriccore-jsCreate React AppWinner
Performance3639Create React App
Accessibility8892Create React App
Best Practices84100Create React App
SEO9167core-js
Security6572Create React App
TTFB379ms74msCreate React App
Composite7273Create React App
Performance
core-js
36
Create React App
39
Accessibility
core-js
88
Create React App
92
Security
core-js
65
Create React App
72
SEO
core-js
91
Create React App
67
Composite
core-js
72
Create React App
73

Create React App outperforms core-js in 6 of 7 categories, with a stronger composite score (73 vs 72). core-js leads in SEO.

When to choose core-js

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

When to choose Create React App

Choose Create React App when your primary concern is server response time 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 1599 audited core-js sites and 2 audited Create React App 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 Create React App?
Based on real BeaverCheck audits, Create React App sites score higher on Lighthouse performance (39 vs 36 on average).
Which has better security, core-js or Create React App?
Create React App sites score higher on security analysis (72 vs 65 on average).
Which has better accessibility, core-js or Create React App?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Create React App (92 vs 88). 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 Create React App?
core-js sites score higher on Lighthouse SEO signals (91 vs 67 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 Create React App?
Create React App sites show lower Time to First Byte (74 ms vs 379 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 Create React App for my website?
Both platforms have trade-offs. Create React App 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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