Exporting to excel file

There is this NPM CLI called PTOE, Follow below steps to generate Excel file from the collection.json.

1. Install PTOE globally using command npm i -g ptoe.
2. Export your collection from postman in latest format (v2.1 as of now)
3. Type ptoe –file <collection_name.json>
4. Excel file will be generated in the same file.

Exporting to html or markdown

https://github.com/thedevsaddam/docgen

Export to swagger

https://github.com/joolfe/postman-to-openapi