Apache Avro Schema to TypeScript Generator

Transform Apache Avro Schema (.avsc) files into clean, strongly-typed TypeScript interfaces and type definitions directly in your browser.

At a glance

Apache Avro Schema to TypeScript Generator is a free, client-side tool that compiles Apache Avro Schema (.avsc) files into strongly-typed TypeScript interfaces and types. It accurately handles records, arrays, enums, maps, union nullability, and logical types. Zero server uploads — everything compiles in browser memory.

100% Client-Side In-Browser TypeScript Interface Generator

Apache Avro Schema (.avsc) files compile into strongly-typed TypeScript interfaces locally in your browser memory. Zero code or schema uploads.

Pure In-Browser
Sample Presets:
Valid Schema 0 chars
Compiles records, arrays, maps, enums, unions, and logical types
0 B
Types Created
0
Total Fields
0
Output Target
TypeScript 5.x
Execution
100% Client-Side

How Avro to TypeScript Compilation Works

Consuming Apache Kafka event streams, Confluent Schema Registry contracts, or data lake records in modern Node.js or browser TypeScript environments requires strict static types. This tool parses Apache Avro Schema (.avsc) files and generates strongly-typed TypeScript interfaces with spec-compliant nullability.

Spec-Accurate Nullability

In Apache Avro, optional attributes are represented as union types containing "null" (e.g. ["null", "string"]). Our generator maps these into optional TypeScript properties with strict null support (field?: string | null).

Recursive Nested Extraction

Deeply nested Avro records and enums are recursively identified and extracted into clean, top-level TypeScript interfaces so that your domain models can be easily reused and exported throughout your codebase.

100% In-Browser Privacy

Your proprietary Avro schema files, internal Kafka event structures, and enterprise data models never leave your browser sandbox. All conversion runs 100% locally in client-side JavaScript.

Why Use This Apache Avro Schema to TypeScript Generator?

100% Client-Side Privacy: Your enterprise schema contracts never leave your local device.
Spec-Accurate Nullability: Accurately maps optional fields and non-null ! modifiers to TypeScript.
Recursive Record Extraction: Automatically creates clean top-level interfaces for nested models.
Configurable Output: Select between interface or type alias declarations, enums, and readonly fields.

How to Use Apache Avro Schema to TypeScript Generator

1

Paste Avro Schema or Upload .avsc

Enter your Avro schema JSON into the left editor or drop an .avsc file, or load one of our built-in domain presets.

2

Configure TypeScript Options

Choose between interface or type alias declarations, toggle readonly properties, and select enum style.

3

Copy or Download TypeScript

Review the generated TypeScript type definitions, copy to your clipboard, or download as a .ts or .d.ts file.

Kafka Clickstream Event Schema to TypeScript Interfaces

Compiles the Avro record into a TypeScript interface with precise nullability and array types.

Apache Avro Schema (.avsc) Source
{
  "type": "record",
  "name": "ClickEvent",
  "fields": [
    { "name": "id", "type": "string" },
    { "name": "referrer", "type": ["null", "string"] },
    { "name": "tags", "type": { "type": "array", "items": "string" } }
  ]
}
Generated TypeScript Interfaces Processed
export interface ClickEvent {
  id: string;
  referrer?: string | null;
  tags: Array<string>;
}

Technical Specifications & Engine Details

Technical specifications and engine details for Apache Avro Schema to TypeScript Generator
Specification Details
Supported Formats APPLICATION/JSON, TEXT/PLAIN, .AVSC, .JSON, .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.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

Your schemas remain strictly on your local device. Zero data is transmitted to external servers.

Frequently Asked Questions

Are my Avro schemas uploaded to an external server?
No. All schema parsing and TypeScript compilation execute 100% locally in your web browser. Your private schema definitions, field names, and data structures never leave your local device.
How does the tool handle Avro union nullability in TypeScript?
Avro union types containing 'null' (e.g. ['null', 'string']) are translated into optional, nullable TypeScript properties (e.g. field?: string | null). Non-null Avro fields compile directly to mandatory TypeScript types.
Can I generate type aliases instead of interfaces?
Yes. Toggle between TypeScript interface declarations and type aliases with a single click in the options toolbar.
Does it support nested records and enums?
Yes. Nested record definitions are recursively extracted into separate top-level TypeScript interfaces, and Avro enums compile to either TypeScript enums or string literal unions.

Methodology

This tool runs entirely in your browser. The example above shows a representative input and the result it produces.

Last updated .