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Superstruct vs Zod

Side-by-side NPM package comparison

Quick Verdict

Smallest Bundle

Superstruct

53.4 KB gzipped

Most Popular

Zod

144.7M weekly downloads

Best Maintained

Zod

80/100 maintenance score

Highest Quality

Zod

80/100 quality score

Overall Pick

Zod

Best all-around based on popularity, size, maintenance & quality

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
3.8M
↓10%
Bundle (gzip)
53.4 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
20
Popularity
100
Quality
50
Security
100
Stability
70
zod icon

zod

Extremely Popular

Version 4.3.6

0
86
Excellent

TypeScript-first schema declaration and validation library with static type inference

Weekly Downloads
144.7M
↑19%
Bundle (gzip)
1.2 MB
Updated
Vulns
0

Health Score Breakdown

Maintenance
80
Popularity
100
Quality
80
Security
100
Stability
70

Choosing between Superstruct and Zod? 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

Zod leads with 144.7M weekly downloads — roughly 37.6x more. Superstruct has 3.8M 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 53.4 KB. Zod comes in at 1.2 MB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Zod has an overall health score of 86/100 (very good), with strong maintenance, quality, 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 Superstruct if you value large community support, strong security track record. Choose Zod if you value massive community and ecosystem, strong security track record.

Our Verdict

Both Superstruct and Zod are solid choices for JavaScript development. Zod has the edge in overall health score (86/100), 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 superstruct better than zod?
It depends on your needs. Superstruct has a health score of 61/100 while Zod scores 86/100. Zod has more weekly downloads (144.7M), 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, superstruct or zod?
Superstruct has the smaller gzipped bundle at 53.4 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use superstruct vs zod?
Based on npm download statistics, Superstruct has approximately 3.8M weekly downloads and Zod has approximately 144.7M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, superstruct or zod?
Zod currently has the higher overall health score at 86/100. Superstruct has a maintenance score of 20/100 and Zod scores 80/100 on maintenance.

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