ajv vs zod

ajv is a versatile JSON schema validator that excels in standalone validation tasks and is widely adopted for both small and large projects. It serves a broad audience with its mature ecosystem and extensive schema support, making it an ideal choice for applications where JSON validation is paramount.

In contrast, zod focuses on TypeScript users, offering schema declarations with static type inference that enhance type safety during development. It is particularly beneficial for teams invested in TypeScript, ensuring runtime validation aligns closely with static type checks, thus streamlining development processes and reducing runtime errors.

While ajv is lightweight with a smaller bundle size, zod’s larger size comes with added TypeScript features, which may be a consideration for projects prioritizing type safety over performance. Organizations transitioning from JavaScript to TypeScript might find zod more valuable, while those needing a straightforward JSON validator might prefer ajv for its simplicity and established track record.