Version 18.1.2
0
85
ExcellentObject schema validation
- Weekly Downloads
- 17.4M
↓6%
- Bundle (gzip)
- 52.8 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70
Joi vs Yup
Side-by-side NPM package comparison
Quick Verdict
Smallest Bundle
Yup
13.1 KB gzipped
Most Popular
Joi
17.4M 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 1.7.1
0
67
GoodDead simple Object schema validation
- Weekly Downloads
- 9.9M
↓7%
- Bundle (gzip)
- 13.1 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
40
Popularity
100
Quality
50
Security
100
Stability
70
Choosing between Joi and Yup? 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 17.4M weekly downloads — roughly 1.8x more. Yup has 9.9M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.
Bundle Size
Yup has the smallest gzipped bundle at 13.1 KB. Joi comes in at 52.8 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. Yup has an overall health score of 67/100 (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 Yup if you value large community support, strong security track record.
Our Verdict
Both Joi and Yup 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 yup?
- It depends on your needs. Joi has a health score of 85/100 while Yup scores 67/100. Joi has more weekly downloads (17.4M), 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 yup?
- Yup has the smaller gzipped bundle at 13.1 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 yup?
- Based on npm download statistics, Joi has approximately 17.4M weekly downloads and Yup has approximately 9.9M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
- Which is better maintained, joi or yup?
- Joi currently has the higher overall health score at 85/100. Joi has a maintenance score of 100/100 and Yup scores 40/100 on maintenance.
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The 2026 JavaScript Stack Cheatsheet
One PDF: the best package for every category (ORMs, bundlers, auth, testing, state management). Used by 500+ devs. Free, updated monthly.