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BySide vs core-js

Based on 1 and 1599 real audits

View BySide details | View core-js details
MetricBySidecore-jsWinner
Performance3136core-js
Accessibility9988BySide
Best Practices7784core-js
SEO10091BySide
Security6265core-js
TTFB128ms379msBySide
Composite7072core-js
Performance
BySide
31
core-js
36
Accessibility
BySide
99
core-js
88
Security
BySide
62
core-js
65
SEO
BySide
100
core-js
91
Composite
BySide
70
core-js
72

core-js outperforms BySide in 4 of 7 categories, with a stronger composite score (72 vs 70). BySide leads in accessibility, SEO, TTFB.

When to choose BySide

Choose BySide 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 BySide 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, BySide or core-js?
Based on real BeaverCheck audits, core-js sites score higher on Lighthouse performance (36 vs 31 on average).
Which has better security, BySide or core-js?
core-js sites score higher on security analysis (65 vs 62 on average).
Which has better accessibility, BySide or core-js?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor BySide (99 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, BySide or core-js?
BySide sites score higher on Lighthouse SEO signals (100 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), BySide or core-js?
BySide sites show lower Time to First Byte (128 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 BySide or core-js for my website?
Both platforms have trade-offs. core-js scores higher on overall composite score while BySide 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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