Fast, unopinionated, minimalist web framework
- Weekly Downloads
- 0
Trend data unavailable
- Bundle (gzip)
- 236.1 KB
- Updated
- Vulns
- 0
Comparison guide
Side-by-side NPM package comparison

Smallest Bundle
Koa
61.8 KB gzipped
Most Popular
Express
0 weekly downloads
Best Maintained
Express
100/100 maintenance score
Highest Quality
Express
50/100 quality score
Overall Pick
Koa
Best all-around based on popularity, size, maintenance & quality
Fast, unopinionated, minimalist web framework
Trend data unavailable
Koa web app framework
Trend data unavailable
Choosing between Express and Koa? Here's a data-driven comparison based on real npm data — downloads, bundle size, health scores, and more — to help you decide which package fits your project best.
Express and Koa both have 0 weekly downloads, indicating equal adoption in the ecosystem.
Koa has the smallest gzipped bundle at 61.8 KB. Express comes in at 236.1 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.
Express has an overall health score of 67/100 (good), with strong maintenance, security scores. Koa has an overall health score of 55/100 (moderate), with strong security scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.
Choose Express if you value actively maintained, strong security track record. Choose Koa if you value strong security track record.
Both Express and Koa are solid choices for JavaScript development. Express has the edge in overall health score (67/100), while each package brings unique strengths to the table. Evaluate them based on your project's priorities — whether that's community size, bundle efficiency, or maintenance activity — and choose the one that aligns best with your requirements.
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