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core-js vs Gladly

Based on 1582 and 12 real audits

View core-js details | View Gladly details
Metriccore-jsGladlyWinner
Performance3623core-js
Accessibility8890Gladly
Best Practices8477core-js
SEO9190core-js
Security6566Gladly
TTFB374ms161msGladly
Composite7272Tie
Performance
core-js
36
Gladly
23
Accessibility
core-js
88
Gladly
90
Security
core-js
65
Gladly
66
SEO
core-js
91
Gladly
90
Composite
core-js
72
Gladly
72

core-js and Gladly are closely matched, each leading in different categories. core-js has a composite score of 72 while Gladly scores 72.

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 Gladly

Choose Gladly when your primary concern is server response time and accessibility. 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 12 audited Gladly 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 Gladly?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 23 on average).
Which has better security, core-js or Gladly?
Gladly sites score higher on security analysis (66 vs 65 on average).
Which has better accessibility, core-js or Gladly?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Gladly (90 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 Gladly?
core-js sites score higher on Lighthouse SEO signals (91 vs 90 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 Gladly?
Gladly sites show lower Time to First Byte (161 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 Gladly 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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