How to Run Postman Collections with Newman CLI for Automated API Testing?

Newman is the official command-line collection runner for Postman. It allows developers and QA engineers to execute API test suites directly from the command prompt or terminal.

How do I install and run Postman collections with Newman CLI?

To run a Postman collection using Newman, follow these steps:

1. Installation

Ensure Node.js is installed, then install Newman globally via npm:

npm install -g newman

2. Running a Collection

Execute your exported collection JSON file along with an environment file:

newman run my_collection.json -e my_environment.json

3. Generating HTML Reports

Install the HTML reporter and generate test execution reports:

npm install -g newman-reporter-htmlextra
newman run my_collection.json -r htmlextra

Using Newman in CLI enables seamless integration into CI/CD build scripts such as Jenkins, GitHub Actions, or GitLab CI.