Skip to content

Classy vs core-js

Based on 1 and 1599 real audits

View Classy details | View core-js details
MetricClassycore-jsWinner
Performance2736core-js
Accessibility9688Classy
Best Practices5784core-js
SEO9291Classy
Security6165core-js
TTFB105ms379msClassy
Composite7272Tie
Performance
Classy
27
core-js
36
Accessibility
Classy
96
core-js
88
Security
Classy
61
core-js
65
SEO
Classy
92
core-js
91
Composite
Classy
72
core-js
72

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

When to choose Classy

Choose Classy when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose core-js

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

How this comparison was built

Scores are medians across 1 audited Classy sites and 1599 audited core-js 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, Classy or core-js?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 27 on average).
Which has better security, Classy or core-js?
core-js sites score higher on security analysis (65 vs 61 on average).
Which has better accessibility, Classy or core-js?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Classy (96 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, Classy or core-js?
Classy 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), Classy or core-js?
Classy sites show lower Time to First Byte (105 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 Classy or core-js for my website?
Both platforms have trade-offs. core-js scores higher on overall composite score while Classy 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.
Audit your own site

Send Feedback