gRPC is a high-performance open-source universal RPC framework developed by Google that leverages HTTP/2 transport and Protocol Buffers for schema-driven communication.
gRPC (gRPC Remote Procedure Calls) is a cloud-native RPC framework created by Google. It uses Protocol Buffers (Protobuf) as its Interface Definition Language (IDL) and message serialization format, running over HTTP/2 multiplexed streams for high-throughput, low-latency microservice communication.
Inspect Protobuf schemas with the Protobuf Inspector or convert JSON payloads to binary definitions using the JSON to Protobuf Converter.
| Feature | gRPC | REST / JSON |
|---|---|---|
| Protocol | HTTP/2 (Multiplexed, binary framing) | HTTP/1.1 or HTTP/2 |
| Payload Format | Protocol Buffers (Binary) | Text-based JSON / XML |
| Schema Contract | Strict .proto definition file |
Optional OpenAPI / Swagger |
| Streaming | Unary, Server, Client, & Bidirectional streaming | SSE or WebSockets required |
| Serialization Speed | 5x–10x faster than JSON serialization | Slower string parsing |
Free, browser-based utilities to test, generate, and inspect gRPC High-Performance Remote Procedure Call Framework payloads directly.
Parse and inspect Protocol Buffer .proto files — view message structures, field types, enums, and services.
Generate Protocol Buffer (.proto) schema definitions from JSON objects.
Build and test HTTP API requests with headers, body, auth, and response visualization.
Analyze HTTP response headers for security, caching, and compliance issues.
