API Tester Pro - Powerful API Testing Tool for Developers

Powerful Features

Everything you need to test APIs efficiently and effectively

Fast & Lightweight

No heavy apps needed. Test APIs directly in your browser with minimal resource usage.

Multiple Methods

Supports GET, POST, PUT, DELETE, PATCH and more. All HTTP methods at your fingertips.

Custom Headers

Add any headers you need with our intuitive interface. Perfect for authentication.

JSON Support

Beautiful JSON formatting for both request and response bodies with syntax highlighting.

Request History

Never lose your work. All requests are saved locally for quick access later.

How It Works

Get started with API Tester Pro in just a few simple steps

1

Install the Extension

Add API Tester Pro to your Chrome browser from the Chrome Web Store with just one click.

2

Configure Your Request

Enter your API endpoint, select the HTTP method, add headers, and include a body if needed.

3

Send & Inspect

Send your request and view the response with status code, timing, and formatted JSON.

What Developers Say

Trusted by developers worldwide

API Tester Pro has become my go-to tool for quick API testing. It's so much faster than opening Postman, and having it right in my browser is a game-changer.

Sarah Johnson

Senior Developer, TechCorp

I love how lightweight this extension is. It has all the features I need without the bloat of standalone API clients. The code generation feature saves me so much time!

Michael Chen

Full Stack Developer

As someone who works with APIs daily, I can't recommend API Tester Pro enough. It's simple yet powerful, and the UI is so intuitive. My whole team uses it now.

David Rodriguez

API Architect, DataSystems

Ready to Supercharge Your API Workflow?

Join thousands of developers who use API Tester Pro to save time and work more efficiently.

Get Started Now

Test APIs Directly From Your Browser