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core-js vs Pusher

Based on 1570 and 8 real audits

View core-js details | View Pusher details
Metriccore-jsPusherWinner
Performance3637Pusher
Accessibility8886core-js
Best Practices8487Pusher
SEO9191Tie
Security6569Pusher
TTFB371ms284msPusher
Composite7274Pusher
Performance
core-js
36
Pusher
37
Accessibility
core-js
88
Pusher
86
Security
core-js
65
Pusher
69
SEO
core-js
91
Pusher
91
Composite
core-js
72
Pusher
74

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

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 Pusher

Choose Pusher when your primary concern is server response time and security. 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 8 audited Pusher 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 Pusher?
Based on real BeaverCheck audits, Pusher sites score higher on Lighthouse performance (37 vs 36 on average).
Which has better security, core-js or Pusher?
Pusher sites score higher on security analysis (69 vs 65 on average).
Which has better accessibility, core-js or Pusher?
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 Pusher?
core-js sites score higher on Lighthouse SEO signals (91 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 Pusher?
Pusher sites show lower Time to First Byte (284 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 Pusher for my website?
Both platforms have trade-offs. Pusher 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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