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Joi vs Superstruct

Side-by-side NPM package comparison

Quick Verdict

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

joi icon

joi

Extremely Popular

Version 18.1.2

0
85
Excellent

Object schema validation

Weekly Downloads
16.4M
4%
Bundle (gzip)
171.3 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70
superstruct icon

superstruct

Very Popular

Version 2.0.2

0
61
Good

A simple and composable way to validate data in JavaScript (and TypeScript).

Weekly Downloads
3.7M
4%
Bundle (gzip)
3.4 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
20
Popularity
100
Quality
50
Security
100
Stability
70

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.

Downloads & Popularity

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.

Bundle Size

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.

Health Score Comparison

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.

When to Choose Each

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.

Our Verdict

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.

Frequently Asked Questions

Is joi better than superstruct?
It depends on your needs. Joi has a health score of 85/100 while Superstruct scores 61/100. Joi has more weekly downloads (16.4M), suggesting broader adoption. Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
Which has a smaller bundle size, joi or superstruct?
Superstruct has the smaller gzipped bundle at 3.4 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use joi vs superstruct?
Based on npm download statistics, Joi has approximately 16.4M weekly downloads and Superstruct has approximately 3.7M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, joi or superstruct?
Joi currently has the higher overall health score at 85/100. Joi has a maintenance score of 100/100 and Superstruct scores 20/100 on maintenance.

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