ajv vs joi

NPM Package Comparison - Which one should you use?

ajv

🏆Most PopularðŸŠķLightweight📘TypeScript

Another JSON Schema Validator

View Repository →
npm install ajv

joi

ðŸ“ĶSmallest⭐Most Starred🔄Recently Updated📘TypeScript

Object schema validation

View Repository →
npm install joi

Download Trends (Last 12 Weeks)

When to Choose Each

👉Choose ajv if:

  • ✓You want the most battle-tested solution with a larger community
  • ✓You prefer fewer dependencies to reduce supply chain risk

👉Choose joi if:

  • ✓Bundle size is critical for your project
  • ✓Community popularity and ecosystem support matter to you

Comparison

Metricajvjoi
Weekly Downloads307.2M21.1M
GitHub Stars14.7k21.2k
Bundle Size1.0 MB584.1 KB
Dependencies47
Last Updated4 weeks ago2 weeks ago
TypeScriptYesYes
LicenseMITBSD-3-Clause
Version8.20.018.2.1

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