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core-js vs PWA

Based on 1841 and 153 real audits

View core-js details | View PWA details
Metriccore-jsPWAWinner
Performance3749PWA
Accessibility8890PWA
Best Practices8587PWA
SEO9192PWA
Security6772PWA
TTFB439ms435msPWA
Composite7478PWA
Performance
core-js
37
PWA
49
Accessibility
core-js
88
PWA
90
Security
core-js
67
PWA
72
SEO
core-js
91
PWA
92
Composite
core-js
74
PWA
78

PWA outperforms core-js in 7 of 7 categories, with a stronger composite score (78 vs 74). core-js leads in no categories.

When to choose core-js

core-js doesn't clearly lead PWA in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

When to choose PWA

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

How this comparison was built

Scores are medians across 1841 audited core-js sites and 153 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 (49 vs 37 on average).
Which has better security, core-js or PWA?
PWA sites score higher on security analysis (72 vs 67 on average).
Which has better accessibility, core-js or PWA?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor PWA (90 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 (435 ms vs 439 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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