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JSON Best Practices Every Developer Should Know

2026-05-017 min read

JSON is the lingua franca of modern web APIs. These best practices keep your data interoperable and performant.

Use consistent naming

Pick camelCase or snake_case and stick with it across the entire API.

Validate against schemas

Use JSON Schema or Zod to validate payloads at runtime.

Keep payloads small

Send only fields the client needs. Use pagination and gzip/brotli compression.

Version your APIs

Use /v1/ in URLs or version headers. Breaking changes need a clear migration path.

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