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core-js vs Pingdom RUM

Based on 1582 and 10 real audits

View core-js details | View Pingdom RUM details
Metriccore-jsPingdom RUMWinner
Performance3649Pingdom RUM
Accessibility8888Tie
Best Practices8487Pingdom RUM
SEO9187core-js
Security6566Pingdom RUM
TTFB374ms301msPingdom RUM
Composite7274Pingdom RUM
Performance
core-js
36
Pingdom RUM
49
Accessibility
core-js
88
Pingdom RUM
88
Security
core-js
65
Pingdom RUM
66
SEO
core-js
91
Pingdom RUM
87
Composite
core-js
72
Pingdom RUM
74

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

When to choose core-js

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

When to choose Pingdom RUM

Choose Pingdom RUM 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 1582 audited core-js sites and 10 audited Pingdom RUM 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 Pingdom RUM?
Based on real BeaverCheck audits, Pingdom RUM sites score higher on Lighthouse performance (49 vs 36 on average).
Which has better security, core-js or Pingdom RUM?
Pingdom RUM sites score higher on security analysis (66 vs 65 on average).
Which has better accessibility, core-js or Pingdom RUM?
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 Pingdom RUM?
core-js sites score higher on Lighthouse SEO signals (91 vs 87 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 Pingdom RUM?
Pingdom RUM sites show lower Time to First Byte (301 ms vs 374 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 Pingdom RUM for my website?
Both platforms have trade-offs. Pingdom RUM 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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