OpenAPI & Swagger to Postman / Bruno Converter

Easily convert OpenAPI 3.0 and Swagger 2.0 API specifications written in YAML or JSON into ready-to-import collections for Postman and Bruno. This tool works fully in your browser — no uploads, no servers, and complete privacy.

100% Client-side Processing YAML & JSON Support Postman Collection v2.1
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Frequently Asked Questions about OpenAPI to Postman / Bruno Converter

No. This OpenAPI to Postman / Bruno converter works entirely in your browser using client-side JavaScript. Your API specifications written in YAML or JSON are processed locally and are never uploaded, stored, or shared with any server.

Yes. You can paste or upload OpenAPI 3.0 or Swagger 2.0 specifications written in either YAML or JSON format. The built-in client-side parser automatically detects and processes the format without any configuration.

The converter automatically reads the servers field (OpenAPI 3.0) or the host and basePath fields (Swagger 2.0) and creates a reusable {{baseUrl}} variable in the generated Postman or Bruno collection. This makes it easy to switch between development, staging, and production environments later.