Data visualization

Overview

When you’re working with APIs that return large or complex responses—think logs, analytics data, geo info—it’s often easier to visualize the data than to scroll through raw JSON. This template helps you use Postman Visualizer to turn your API responses into interactive charts, tables, and maps—right inside Postman.

It’s a fast way to explore, debug, or even prototype internal tools based on API output.

What is the Postman Visualizer?

The Postman Visualizer lets you display API responses as custom visualizations using HTML, CSS, and JavaScript. It’s built into Postman and runs directly inside the “Visualize” tab of any request.

You can use it to render:

• Bar charts and line graphs

• Data tables

• Geo maps

• Anything you can build with basic web code and your API response

It’s especially helpful for internal APIs that return structured data—like metrics, summaries, or data feeds.

What does the data visualization template contain?

• Sample API responses in JSON, CSV, and XML

• Working test scripts that use pm.visualizer.set() to generate charts and tables

• Example visualizations:

  • Bar charts

  • Tables

  • Maps

• Inline documentation and code snippets you can copy, extend, or modify

It’s a hands-on reference for how to build interactive visualizations directly in Postman.

How to use the data visualization template

1. Fork the collection to your workspace

2. Run the example requests to see how the visualizations render in the Visualize tab

3. Review the test scripts—these use pm.visualizer.set() to bind response data to custom HTML

4. Modify the scripts to match your own response formats, visual styles, or chart types

5. Test with your own API by pointing the requests to your endpoints and customizing the logic

This is great for demos, internal dashboards, or just making raw API data easier to explore and present.