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core-js vs PWA

Based on 1570 and 111 real audits

View core-js details | View PWA details
Metriccore-jsPWAWinner
Performance3639PWA
Accessibility8888Tie
Best Practices8483core-js
SEO9192PWA
Security6567PWA
TTFB371ms325msPWA
Composite7274PWA
Performance
core-js
36
PWA
39
Accessibility
core-js
88
PWA
88
Security
core-js
65
PWA
67
SEO
core-js
91
PWA
92
Composite
core-js
72
PWA
74

PWA outperforms core-js in 5 of 7 categories, with a stronger composite score (74 vs 72). core-js leads in best practices.

When to choose core-js

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

When to choose PWA

Choose PWA 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 1570 audited core-js sites and 111 audited PWA 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 PWA?
Based on real BeaverCheck audits, PWA sites score higher on Lighthouse performance (39 vs 36 on average).
Which has better security, core-js or PWA?
PWA sites score higher on security analysis (67 vs 65 on average).
Which has better accessibility, core-js or PWA?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 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 PWA?
PWA 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 PWA?
PWA sites show lower Time to First Byte (325 ms vs 371 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 PWA for my website?
Both platforms have trade-offs. PWA 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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