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core-js vs Newspack by Automattic

Based on 1600 and 2 real audits

View core-js details | View Newspack by Automattic details
Metriccore-jsNewspack by AutomatticWinner
Performance3648Newspack by Automattic
Accessibility8884core-js
Best Practices8484Tie
SEO9192Newspack by Automattic
Security6563core-js
TTFB379ms272msNewspack by Automattic
Composite7275Newspack by Automattic
Performance
core-js
36
Newspack by Automattic
48
Accessibility
core-js
88
Newspack by Automattic
84
Security
core-js
65
Newspack by Automattic
63
SEO
core-js
91
Newspack by Automattic
92
Composite
core-js
72
Newspack by Automattic
75

Newspack by Automattic outperforms core-js in 4 of 7 categories, with a stronger composite score (75 vs 72). core-js leads in accessibility, security.

When to choose core-js

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

When to choose Newspack by Automattic

Choose Newspack by Automattic 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 1600 audited core-js sites and 2 audited Newspack by Automattic 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 Newspack by Automattic?
Based on real BeaverCheck audits, Newspack by Automattic sites score higher on Lighthouse performance (48 vs 36 on average).
Which has better security, core-js or Newspack by Automattic?
core-js sites score higher on security analysis (65 vs 63 on average).
Which has better accessibility, core-js or Newspack by Automattic?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 84). 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 Newspack by Automattic?
Newspack by Automattic 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 Newspack by Automattic?
Newspack by Automattic sites show lower Time to First Byte (272 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 Newspack by Automattic for my website?
Both platforms have trade-offs. Newspack by Automattic 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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