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core-js vs waitForImages

Based on 1599 and 3 real audits

View core-js details | View waitForImages details
Metriccore-jswaitForImagesWinner
Performance3646waitForImages
Accessibility8865core-js
Best Practices8481core-js
SEO9186core-js
Security6566waitForImages
TTFB379ms296mswaitForImages
Composite7272Tie
Performance
core-js
36
waitForImages
46
Accessibility
core-js
88
waitForImages
65
Security
core-js
65
waitForImages
66
SEO
core-js
91
waitForImages
86
Composite
core-js
72
waitForImages
72

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

When to choose core-js

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

When to choose waitForImages

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

How this comparison was built

Scores are medians across 1599 audited core-js sites and 3 audited waitForImages 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 waitForImages?
Based on real BeaverCheck audits, waitForImages sites score higher on Lighthouse performance (46 vs 36 on average).
Which has better security, core-js or waitForImages?
waitForImages sites score higher on security analysis (66 vs 65 on average).
Which has better accessibility, core-js or waitForImages?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor core-js (88 vs 65). 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 waitForImages?
core-js sites score higher on Lighthouse SEO signals (91 vs 86 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 waitForImages?
waitForImages sites show lower Time to First Byte (296 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 core-js or waitForImages for my website?
Both platforms have trade-offs. waitForImages 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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