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core-js vs Pusher

Based on 1840 and 9 real audits

View core-js details | View Pusher details
Metriccore-jsPusherWinner
Performance3737Tie
Accessibility8886core-js
Best Practices8587Pusher
SEO9192Pusher
Security6770Pusher
TTFB439ms311msPusher
Composite7475Pusher
Performance
core-js
37
Pusher
37
Accessibility
core-js
88
Pusher
86
Security
core-js
67
Pusher
70
SEO
core-js
91
Pusher
92
Composite
core-js
74
Pusher
75

Pusher outperforms core-js in 5 of 7 categories, with a stronger composite score (75 vs 74). 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 1840 audited core-js sites and 9 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, core-js sites score higher on Lighthouse performance (37 vs 37 on average).
Which has better security, core-js or Pusher?
Pusher sites score higher on security analysis (70 vs 67 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?
Pusher 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 Pusher?
Pusher sites show lower Time to First Byte (311 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 Pusher for my website?
Both platforms have trade-offs. core-js 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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