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Day.js vs Microsoft

Based on 14 and 2623 real audits

View Day.js details | View Microsoft details
MetricDay.jsMicrosoftWinner
Performance4040Tie
Accessibility7889Microsoft
Best Practices8386Microsoft
SEO9289Day.js
Security6868Tie
TTFB475ms347msMicrosoft
Composite7573Day.js
Performance
Day.js
40
Microsoft
40
Accessibility
Day.js
78
Microsoft
89
Security
Day.js
68
Microsoft
68
SEO
Day.js
92
Microsoft
89
Composite
Day.js
75
Microsoft
73

Microsoft outperforms Day.js in 3 of 7 categories, with a stronger composite score (73 vs 75). Day.js leads in SEO, composite score.

When to choose Day.js

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

When to choose Microsoft

Choose Microsoft 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 14 audited Day.js sites and 2623 audited Microsoft 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, Day.js or Microsoft?
Based on real BeaverCheck audits, Day.js sites score higher on Lighthouse performance (40 vs 40 on average).
Which has better security, Day.js or Microsoft?
Day.js sites score higher on security analysis (68 vs 68 on average).
Which has better accessibility, Day.js or Microsoft?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Microsoft (89 vs 78). 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, Day.js or Microsoft?
Day.js sites score higher on Lighthouse SEO signals (92 vs 89 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), Day.js or Microsoft?
Microsoft sites show lower Time to First Byte (347 ms vs 475 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 Day.js or Microsoft for my website?
Both platforms have trade-offs. Day.js scores higher on overall composite score while Day.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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