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Postman to OpenAPI Converter

Convert Postman Collections (v2.1) to OpenAPI 3.0 (Swagger) specifications in YAML or JSON format.

100% Private. Data processing happens in your browser and is never uploaded.

How to use the Postman to OpenAPI Converter

  1. Export your data from the source platform (Postman JSON).
  2. Upload the .json file to the converter above.
  3. Click "Convert" to process the file securely in your browser.
  4. Download the converted .yaml file compatible with the target platform.

Why use this converter?

Migrating data between development tools is often a manual, error-prone process. This Postman to OpenAPI Converter automates the formatting, ensuring your data transfers smoothly without data loss. Whether you are moving from Jira to Linear or documenting APIs from Postman, this free tool saves you hours of manual work.