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core-js vs Performant Translations

Based on 1555 and 2 real audits

View core-js details | View Performant Translations details
Metriccore-jsPerformant TranslationsWinner
Performance3655Performant Translations
Accessibility8894Performant Translations
Best Practices8481core-js
SEO9192Performant Translations
Security6571Performant Translations
TTFB370ms4253mscore-js
Composite7277Performant Translations
Performance
core-js
36
Performant Translations
55
Accessibility
core-js
88
Performant Translations
94
Security
core-js
65
Performant Translations
71
SEO
core-js
91
Performant Translations
92
Composite
core-js
72
Performant Translations
77

Performant Translations outperforms core-js in 5 of 7 categories, with a stronger composite score (77 vs 72). core-js leads in best practices, TTFB.

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 Performant Translations

Choose Performant Translations when your primary concern is performance and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 1555 audited core-js sites and 2 audited Performant Translations 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, core-js or Performant Translations?
Based on real BeaverCheck audits, Performant Translations sites score higher on Lighthouse performance (55 vs 36 on average).
Which has better security, core-js or Performant Translations?
Performant Translations sites score higher on security analysis (71 vs 65 on average).
Which has better accessibility, core-js or Performant Translations?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Performant Translations (94 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 Performant Translations?
Performant Translations 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 Performant Translations?
core-js sites show lower Time to First Byte (370 ms vs 4253 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 Performant Translations for my website?
Both platforms have trade-offs. Performant Translations 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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