How to Use JSON Formatter for API Debugging (2025)

When working with APIs, raw JSON responses often look messy and hard to read. That’s where the JSON Formatter Chrome extension becomes an essential tool. It helps you format, beautify, and analyze API responses directly in your browser.

In this tutorial, SoftwareBhai.com will show you how to use JSON Formatter for API debugging and make your development process faster and cleaner in 2025.

What Is JSON Formatter?

JSON Formatter is a lightweight Chrome extension that automatically formats JSON data into a readable, collapsible structure. It’s one of the best tools for developers who frequently work with REST APIs or web services.

  • ✅ Makes JSON data human-readable
  • ✅ Collapsible nodes for easy navigation
  • ✅ Validates JSON structure for errors
  • ✅ Works directly in the Chrome browser

How to Install JSON Formatter

Follow these simple steps to install the extension:

  1. Open Google Chrome and go to the Chrome Web Store.
  2. Search for “JSON Formatter”.
  3. Click on Add to Chrome → Add Extension.
  4. Once installed, it will automatically work on any JSON URL you visit.

How to Use JSON Formatter for API Debugging

After installing, you can start using it immediately:

  1. Visit any API endpoint that returns JSON (e.g., https://api.example.com/users).
  2. Instead of showing unformatted text, Chrome will now display a beautifully structured JSON tree.
  3. Expand or collapse objects using the arrow icons.
  4. Click the “Raw” or “Formatted” view to switch between modes.
  5. Copy JSON data for use in Postman or your code editor.

Key Features of JSON Formatter

  • ✅ Syntax Highlighting: Makes JSON easier to read.
  • ✅ Validation: Detects errors in malformed JSON instantly.
  • ✅ Collapsible Tree View: Expand and collapse nested data easily.
  • ✅ Offline Support: Works even when disconnected from the internet.

Pro Tips for Developers

  • Use JSON Formatter with Postman or Insomnia for faster API debugging.
  • Combine with the DevTools Network tab to inspect live API requests.
  • Use Ctrl + F to search within large JSON files quickly.

Final Thoughts

The JSON Formatter Chrome extension is one of the simplest yet most powerful tools for front-end and back-end developers. Whether you’re building APIs or integrating third-party data, this extension saves time and helps you understand complex JSON structures clearly.

Explore more developer tools and browser extensions in our Google Chrome Browser section at SoftwareBhai.com.