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core-js vs Yahoo Advertising

Based on 1582 and 15 real audits

View core-js details | View Yahoo Advertising details
Metriccore-jsYahoo AdvertisingWinner
Performance3629core-js
Accessibility8882core-js
Best Practices8476core-js
SEO9192Yahoo Advertising
Security6560core-js
TTFB374ms793mscore-js
Composite7269core-js
Performance
core-js
36
Yahoo Advertising
29
Accessibility
core-js
88
Yahoo Advertising
82
Security
core-js
65
Yahoo Advertising
60
SEO
core-js
91
Yahoo Advertising
92
Composite
core-js
72
Yahoo Advertising
69

core-js outperforms Yahoo Advertising in 6 of 7 categories, with a stronger composite score (72 vs 69). Yahoo Advertising leads in SEO.

When to choose core-js

Choose core-js when your primary concern is server response time and best practices. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Yahoo Advertising

Choose Yahoo Advertising when your primary concern is SEO. 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 15 audited Yahoo Advertising 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 Yahoo Advertising?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 29 on average).
Which has better security, core-js or Yahoo Advertising?
core-js sites score higher on security analysis (65 vs 60 on average).
Which has better accessibility, core-js or Yahoo Advertising?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 82). 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 Yahoo Advertising?
Yahoo Advertising 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 Yahoo Advertising?
core-js sites show lower Time to First Byte (374 ms vs 793 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 Yahoo Advertising 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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