Version 18.1.2
Object schema validation
- Weekly Downloads
- 16.4M
- Bundle (gzip)
- 171.3 KB
- Updated
- Vulns
- 0
Side-by-side NPM package comparison
Smallest Bundle
Superstruct
3.4 KB gzipped
Most Popular
Joi
16.4M weekly downloads
Best Maintained
Joi
100/100 maintenance score
Highest Quality
Joi
50/100 quality score
Overall Pick
Joi
Best all-around based on popularity, size, maintenance & quality
Version 18.1.2
Object schema validation
Version 2.0.2
A simple and composable way to validate data in JavaScript (and TypeScript).
Choosing between Joi and Superstruct? 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.
Joi leads with 16.4M weekly downloads — roughly 4.4x more. Superstruct has 3.7M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.
Superstruct has the smallest gzipped bundle at 3.4 KB. Joi comes in at 171.3 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.
Joi has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Superstruct has an overall health score of 61/100 (good), with strong security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.
Choose Joi if you value massive community and ecosystem, actively maintained, strong security track record. Choose Superstruct if you value large community support, minimal bundle footprint, strong security track record.
Both Joi and Superstruct are solid choices for JavaScript development. Joi has the edge in overall health score (85/100), 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.
One PDF: the best package for every category (ORMs, bundlers, auth, testing, state management). Used by 500+ devs. Free, updated monthly.