@sinclair/typebox vs ajv
Side-by-side comparison of @sinclair/typebox and ajv
- Weekly Downloads
- 84.2M
- Stars
- 0
- Gzip Size
- 14.2 kB
- License
- MIT
- Last Updated
- 4d ago
- Open Issues
- 0
- Forks
- 0
- Unpacked Size
- 1.9 MB
- Dependencies
- 1
- Weekly Downloads
- 230.2M
- Stars
- 14.6K
- Gzip Size
- 36.1 kB
- License
- MIT
- Last Updated
- 2h ago
- Open Issues
- 311
- Forks
- 937
- Unpacked Size
- 1.0 MB
- Dependencies
- 4
Download Trends
Verdict
@sinclair/typebox excels in providing a type-safe approach to building JSON Schema, specifically catering to TypeScript users who need static type resolution. In contrast, ajv serves as a robust JSON Schema validator that is widely adopted and well-supported, making it suitable for various JavaScript environments.
For smaller, TypeScript-centric projects where type safety is a priority, @sinclair/typebox would be the best choice. However, for larger projects or teams seeking extensive community support and features, ajv's proven track record and greater adoption could offer more advantages.
Developers migrating from simpler validation libraries may find ajv's additional complexity worth considering. Meanwhile, users of @sinclair/typebox should be aware that its current limited support in terms of forks and stars might indicate a less active community compared to ajv's larger ecosystem.
Detailed Comparison
| Criteria | @sinclair/typebox | ajv |
|---|---|---|
| Open Issues | ✓No open issues suggesting a stable state. | 311 open issues may reflect ongoing development challenges. |
| GitHub Forks | No forks suggest limited community engagement. | ✓937 forks imply active modification and usage. |
| GitHub Stars | Lacks GitHub stars, indicating low visibility. | ✓14.6K stars signal strong community interest. |
| Last Updated | Last updated in February 2026 demonstrates recent activity. | Updated January 2026 reflects a commitment to maintainance. |
| Unpacked Size | 1.9 MB is relatively large for a type-building tool. | ✓1.0 MB is compact and efficient for a validator. |
| Learning Curve | May require TypeScript familiarity, potentially increasing initial learning. | ✓Easier for JavaScript developers due to broader familiarity with validators. |
| Overall Purpose | Targets TypeScript users needing type-safe JSON Schema construction. | ✓Provides a general-purpose JSON Schema validation tool. |
| Weekly Downloads | 83.7M downloads indicates moderate usage. | ✓230.5M downloads highlight widespread adoption. |
| Bundle Size (gzip) | ✓At 14.2 kB, it offers a lightweight footprint for TypeScript use. | 36.1 kB suggests added features may increase size for validation. |
| TypeScript Support | ✓Designed specifically for TypeScript users with static type resolution. | Offers TypeScript support but is not heavily oriented towards it. |
| Validation Features | Focuses on types with JSON Schema integration without extensive validation features. | ✓Comprehensive range of features for JSON Schema validation, including custom keywords. |
| Community Activities | Limited community metrics may imply lower engagement. | ✓High engagement with numerous stars and forks. |