Protobuf to TypeScript Generator
Convert Protocol Buffers (.proto) definitions into clean, strongly-typed TypeScript interfaces and type definitions directly in your browser.
At a glance
Protobuf to TypeScript Generator is a free client-side tool that compiles Protocol Buffers (.proto) files into clean, strongly-typed TypeScript interfaces and types. It accurately handles messages, enums, repeated arrays, maps, and oneof blocks. Zero server uploads — everything compiles in browser memory.
100% Client-Side In-Browser TypeScript Interface Generator
Protocol Buffers (.proto) definitions compile into strongly-typed TypeScript interfaces locally in your browser memory. Zero code or schema uploads.
How Protobuf to TypeScript Interface Generation Works
Consuming gRPC services or Protocol Buffers binary payloads in web applications, Node.js microservices, or frontend clients requires clean, strongly-typed TypeScript models. This tool parses proto3 schemas and generates modular TypeScript interfaces with full support for repeated collections, key-value maps, and oneof unions.
Strict Static Typing for gRPC
Every proto3 message compiles into an exact TypeScript representation. Scalar numbers, strings, booleans, and byte arrays map directly to their idiomatic TypeScript equivalents.
Nested Messages Decomposition
Deeply nested messages and sub-enums are recursively identified and extracted into top-level declarations so they can be individually imported, exported, and extended across your codebase.
100% Client-Side Privacy
Your proprietary gRPC contracts, RPC endpoints, and internal microservice structures never leave your local device. Everything compiles inside your browser memory.
Why Use This Protobuf to TypeScript Generator?
How to Use Protobuf to TypeScript Generator
Paste Proto Definition or Upload .proto
Enter your proto3 message syntax or drop a .proto file into the editor.
Configure TypeScript Options
Choose between interface or type alias declarations, toggle readonly properties, and select enum style.
Copy or Download TypeScript
Review the generated TypeScript type definitions, copy to your clipboard, or download as a .ts file.
gRPC User Profile Proto to TypeScript Interfaces
Parses the proto3 message definition and compiles it into a clean TypeScript interface with exact type annotations.
syntax = "proto3";
message UserProfile {
string user_id = 1;
string email = 2;
bool is_active = 3;
repeated string tags = 4;
}
export interface UserProfile {
user_id: string;
email: string;
is_active: boolean;
tags: Array<string>;
}
Technical Specifications & Engine Details
| Specification | Details |
|---|---|
| Supported Formats | TEXT/PLAIN, .PROTO, .TXT → TEXT/TYPESCRIPT, TEXT/PLAIN, .TS, .D.TS |
| Execution Mode | 100% Client-Side In-Browser (client) |
| Browser Requirements | Requires modern web browser with ECMAScript 6+ and standard DOM Web APIs. |
| Performance Constraints | Runs 100% client-side in browser memory. Performance bounded by local device RAM. |
100% Client-Side Privacy Guarantee
Your proto definitions remain strictly on your local device. Zero data is transmitted to external servers.
Frequently Asked Questions
Are my proto files uploaded to an external server?
Does it support proto3 repeated fields and maps?
How does the tool handle oneof fields?
Can I generate type aliases instead of interfaces?
Methodology
This tool runs entirely in your browser. The example above shows a representative input and the result it produces.
Last updated .