JSON to Protobuf Schema

Generate Protocol Buffer (.proto) schema definitions from JSON data. Perfect for gRPC services and efficient data serialization.

Input JSON

🔧 All JSON Tools

Protobuf Output

Features

📦 Proto3 Support

  • Modern proto3 syntax
  • Automatic field numbering
  • Nested message support
  • Repeated fields for arrays

⚡ Smart Types

  • int32/int64 for integers
  • double for floats
  • bool for booleans
  • Nested messages for objects

🚀 gRPC Ready

  • Package declarations
  • Service stubs (optional)
  • Compatible with protoc
  • Ready for code generation