valibot
The modular and type safe schema library for validating structural data
17.2M weekly downloads · 14.4 KB gzip · Health 92/100
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Comparison guide
Valibot vs Zod
Side-by-side NPM package comparison
Quick Verdict
Smallest Bundle
Valibot
14.4 KB gzipped
Most Popular
Zod
264.4M weekly downloads
Best Maintained
Valibot
100/100 maintenance score
Highest Quality
Valibot
80/100 quality score
Overall Pick
Zod
Best all-around based on popularity, size, maintenance & quality
zod
TypeScript-first schema declaration and validation library with static type inference
264.4M weekly downloads · 86.5 KB gzip · Health 92/100
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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 264.4M weekly downloads — roughly 15.4x more. Valibot has 17.2M 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 86.5 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.
Health Score Comparison
Valibot has an overall health score of 92/100 (excellent), with strong maintenance, quality, security, popularity scores. Zod has an overall health score of 92/100 (excellent), 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, actively maintained, 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. Valibot 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 92/100 while Zod scores 92/100. Zod has more recorded weekly downloads (264.4M). 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?
- Zod has more recorded weekly downloads (264.4M). Download counts reflect package installations, not unique developers.
- Which is better maintained, valibot or zod?
- Valibot has a maintenance score of 100/100. Valibot scores 100/100 and Zod scores 100/100 on maintenance.
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