TS → Protobuf proto3
Microservice Schema & RPC Automation

TypeScript Interface to Protocol Buffers proto3 Converter

Translate TypeScript interfaces and type definitions into Protobuf 3 syntax messages, fields with incremental tags, and enums.

100% Client-Side Privacy
Zero Server Transmission
Presets:
Protobuf 3 Compiler Options & Tag Allocation Settings
syntax = "proto3"•snake_case
TypeScript Interface / Types
Lines: 46•Interfaces: 0•Enums: 0
892 Chars: • 0.9 KB
syntax = "proto3";
package identity.v1;
Messages: 0•Fields: 0•Syntax: proto3
40 Chars: • 0.0 KB
Proto Messages0 messages (0 fields)
Enums0 enums parsed
gRPC Services0 gRPC Services (identity.v1)

100% Client-Side TypeScript AST Parsing

Zero server uploads or database transmissions. All TypeScript interface extraction, type tokenization, and Protobuf schema compilation execute strictly in browser memory.

Smart Proto3 Tag Allocation & Field Normalization

Automatically numbers field tags sequentially from 1, converts field identifiers to protobuf standard snake_case, and resolves complex Record types to proto maps.

Production gRPC & Proto3 Service Generation

Seamlessly compiles TypeScript RPC interface signatures into production-ready gRPC service definitions, message request/response pairs, and streaming stubs.

Technical Reference & Architecture Guide

TypeScript Interface to Protocol Buffers proto3 Converter — Reference Guide

Translate TypeScript interfaces and type definitions into Protobuf 3 syntax messages, fields with incremental tags, and enums.

Key Parameters & Controls

Field Naming CasingEnum (snake_case | camelCase | preserve)

Specifies field identifier casing. Google Protobuf style guides require lower_snake_case for message field names.

Default: snake_case
Default Number TypeEnum (int32 | int64 | double | float | uint32)

Determines the protobuf scalar type mapped from general TypeScript 'number' primitive types.

Default: int32
Optional Fields ModeEnum (proto3_optional | implicit | wrappers)

Controls how optional TypeScript properties (field?: type) are emitted. 'proto3_optional' emits explicit 'optional' keywords with presence tracking.

Default: proto3_optional
Proto Package NameString

Defines the package namespace at the top of the generated .proto file to prevent naming collisions in cross-service stubs.

Default: api.v1
Auto Well-Known Type ImportsBoolean

Automatically detects TypeScript Date, unknown, or Record types and injects corresponding google/protobuf/timestamp.proto or struct.proto imports.

Default: true

Pro Tips & Best Practices

Preserve Deterministic Tag Numbers

In production Protobuf schemas, never reorder fields after deployment. Field tags (1, 2, 3...) permanently identify binary payloads. Always append new fields with higher tag numbers or use reserved statements.

Mapping Dates to Timestamps

TypeScript Date properties automatically convert to 'google.protobuf.Timestamp'. Ensure your protobuf compiler includes Google well-known types during code generation.

Record and Dictionary Translation

TypeScript 'Record<string, T>' or '{ [key: string]: T }' index signatures map seamlessly to Protobuf 'map<string, T>' fields, retaining key-value lookups without intermediate wrapper messages.

TypeScript Union Types as Oneof

Discriminated union types (e.g., type Event = A | B) should be mapped into Protobuf 'oneof' blocks to ensure mutual exclusivity and memory-efficient binary packing on the wire.

Common Gotchas & Troubleshooting

Ambiguous TypeScript 'number' type mapping to Protobuf scalars

TypeScript 'number' can represent integers or 64-bit floating point numbers. Use the 'Default Number Type' setting, or annotate fields with JSDoc comments like /** @type {int64} */ or /** @type {double} */ to override individual fields.

Missing google/protobuf/timestamp.proto import in protoc compilation

Ensure the 'Auto Well-Known Type Imports' option is enabled, and verify your protoc or buf build command has access to the official Google Well-Known Types directory.

Nested anonymous interface types inside TypeScript declarations

Protobuf requires all message types to have explicit names. Extract inline object types (e.g., { user: { id: string } }) into dedicated named interfaces (e.g., interface UserSummary) before converting.

Frequently Asked Questions

How does this converter handle Protobuf proto3 vs proto2 syntax?▼

The generator targets proto3 by default, utilizing clean syntax where scalar fields are optional with default values, and supporting the 'proto3_optional' keyword for explicit field presence.

How are TypeScript array types converted to Protocol Buffers?▼

TypeScript arrays (T[] or Array<T>) are mapped to the 'repeated' field rule in proto3 (e.g., 'repeated string tags = 3;'). Proto3 automatically uses packed encoding for repeated scalar numeric types for wire efficiency.

Can TypeScript string enums and numeric enums be translated into proto3 enums?▼

Yes. TypeScript enums are translated into proto3 'enum' declarations. Because proto3 requires the first enum entry to have numeric value 0 (serving as the default value), the converter automatically assigns or prefixes an UNSPECIFIED = 0 entry if not already present.

Are my TypeScript interfaces and source code uploaded to any backend server?▼

No. The entire lexical parsing, AST tokenization, and .proto code generation run 100% locally within your client browser. No code or sensitive schema definitions are ever sent across the network.

How are TypeScript interfaces with extends or type intersections handled?▼

Inherited properties from extended interfaces ('interface Child extends Parent') and type intersections ('type Combined = A & B') are flattened into the resulting Protobuf message with consecutive incremental field tags.

Related Tools & Utilities

All Tools →
GitLab CI/CD (.gitlab-ci.yml) Pipeline GeneratorDeveloper

Build production GitLab CI/CD pipelines with multi-stage workflows (build, test, deploy, docker), cache policies, and artifact rules.

Open tool→
Linux Supervisord (supervisord.conf) Program GeneratorDeveloper

Generate Supervisord program configuration blocks with auto-restart, process counts, log redirection, environment variables, and user privileges.

Open tool→
HAProxy Load Balancer Configuration GeneratorDeveloper

Construct production HAProxy 2.x/3.x configs with frontend SSL termination, round-robin backends, health checks, ACLs, and rate limiting.

Open tool→
Kubernetes Helm Chart (Chart.yaml & values.yaml) GeneratorDeveloper

Generate standard Kubernetes Helm v3 Chart.yaml, values.yaml, and deployment templates with service, ingress, and resource limits.

Open tool→
Multi-Stage Dockerfile Generator (Node, Go, Python, Rust)Developer

Create hardened, lightweight multi-stage Dockerfiles for Node.js, Golang, Python, Rust, and Java with non-root security and cache optimization.

Open tool→
SQL DDL to Kysely TypeScript Database Interface GeneratorDeveloper

Convert SQL CREATE TABLE DDL schemas into strongly-typed Kysely TypeScript database interfaces, Generated columns, and ColumnType definitions.

Open tool→