To import your API specifications into Postman:
- From the sidebar, select APIs, then select Import.
- Select a file or folder, enter a link to the API, or paste your raw text. ...
- Confirm the name, format, and what you would like your data to import as.
- Select Import to bring your data into Postman. (google)
also read
Importing and exporting data | Postman Learning Center
Importing and exporting data: documentation for Postman, the collaboration platform for API development. Create better APIs—faster.