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core-js vs Sailthru

Based on 1582 and 46 real audits

View core-js details | View Sailthru details
Metriccore-jsSailthruWinner
Performance3628core-js
Accessibility8886core-js
Best Practices8480core-js
SEO9192Sailthru
Security6563core-js
TTFB374ms186msSailthru
Composite7271core-js
Performance
core-js
36
Sailthru
28
Accessibility
core-js
88
Sailthru
86
Security
core-js
65
Sailthru
63
SEO
core-js
91
Sailthru
92
Composite
core-js
72
Sailthru
71

core-js outperforms Sailthru in 5 of 7 categories, with a stronger composite score (72 vs 71). Sailthru leads in SEO, TTFB.

When to choose core-js

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

When to choose Sailthru

Choose Sailthru when your primary concern is server response time and 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 46 audited Sailthru 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 Sailthru?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 28 on average).
Which has better security, core-js or Sailthru?
core-js sites score higher on security analysis (65 vs 63 on average).
Which has better accessibility, core-js or Sailthru?
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 Sailthru?
Sailthru 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 Sailthru?
Sailthru sites show lower Time to First Byte (186 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 Sailthru 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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