86
ExcellentThe modular and type safe schema library for validating structural data
- Weekly Downloads
- 18.5M
↑15%
- Bundle (gzip)
- 14.4 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
80
Popularity
100
Quality
80
Security
100
Stability
70
Comparison guide
Valibot vs Zod
Side-by-side NPM package comparison
Quick Verdict
Smallest Bundle
Valibot
14.4 KB gzipped
Most Popular
Zod
274.7M weekly downloads
Best Maintained
Zod
100/100 maintenance score
Highest Quality
Valibot
80/100 quality score
Overall Pick
Zod
Best all-around based on popularity, size, maintenance & quality
92
ExcellentTypeScript-first schema declaration and validation library with static type inference
- Weekly Downloads
- 274.7M
↑8%
- Bundle (gzip)
- 81.2 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
100
Popularity
100
Quality
80
Security
100
Stability
70
Choosing between Valibot 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 274.7M weekly downloads — roughly 14.8x more. Valibot has 18.5M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.
Bundle Size
Valibot has the smallest gzipped bundle at 14.4 KB. Zod comes in at 81.2 KB. 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 92/100 (excellent), with strong maintenance, quality, security, popularity scores. Valibot has an overall health score of 86/100 (very good), with strong maintenance, quality, security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.
When to Choose Each
Choose Valibot if you value massive community and ecosystem, strong security track record. Choose Zod if you value massive community and ecosystem, actively maintained, strong security track record.
Our Verdict
Both Valibot and Zod are solid choices for JavaScript development. Zod has the edge in overall health score (92/100), 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 valibot better than zod?
- It depends on your needs. Valibot has a health score of 86/100 while Zod scores 92/100. Zod has more weekly downloads (274.7M), 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, valibot or zod?
- Valibot has the smaller gzipped bundle at 14.4 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
- How many developers use valibot vs zod?
- Based on npm download statistics, Valibot has approximately 18.5M weekly downloads and Zod has approximately 274.7M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
- Which is better maintained, valibot or zod?
- Zod currently has the higher overall health score at 92/100. Valibot has a maintenance score of 80/100 and Zod scores 100/100 on maintenance.
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The 2026 JavaScript Stack Cheatsheet
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