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Test Your REST APIs in Seconds - No Downloads Required

Whether you're debugging an API issue at midnight or testing a new endpoint before pushing to production, our API Request Tester makes it effortless. Think of it as your Postman alternative that lives in your browser—no installation, no account creation, just pure simplicity.

We built this tool for developers who need quick API testing without the hassle. Import cURL commands directly from Chrome DevTools, add authentication headers in seconds, and see beautifully formatted responses. It's perfect for testing JSON APIs, debugging REST endpoints, or validating your API documentation.

Step 1

Enter API Endpoint URL

Enter your API endpoint URL and select the HTTP method (GET, POST, PUT, PATCH, DELETE, etc.).

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Supports all HTTP methods: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS
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HTTPS and HTTP: Test both secure and non-secure endpoints
Step 2

Configure Request Details

Use tabs to configure different aspects of your API request:

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Body Tab: Add JSON or text request body for POST/PUT/PATCH requests
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Headers Tab: Add custom headers like Content-Type, Accept, etc.
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Auth Tab: Add Bearer tokens or Basic authentication
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Import cURL Tab: Paste cURL commands from browser DevTools
Step 3

Send Request and View Response

Click the "Send" button to execute your API request and see the response instantly.

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Status code: See HTTP status (200, 404, 500, etc.) with color coding
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Response time: View request duration in milliseconds
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Formatted response: JSON responses are automatically formatted
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Copy response: One-click copy to clipboard

Why Developers Love This Tool

We've packed in features that actually matter when you're testing APIs. No bloat, no unnecessary complexity—just the tools you need to get your work done faster. Here's what makes our API tester stand out:

✓
Lightning-Fast cURL Import

Right-click any request in Chrome DevTools, copy as cURL, paste it here, and boom—everything's parsed automatically. URL, headers, auth tokens, request body—all extracted in milliseconds. No manual copying field by field.

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Smart Headers Management

Add as many custom headers as you need. Testing CORS? Add Origin headers. Need content negotiation? Set Accept headers. Each header has a toggle switch so you can quickly enable/disable without deleting. Perfect for A/B testing different header combinations.

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Built-in Authentication

Bearer tokens and Basic auth support built right in. No need to manually construct Authorization headers or encode credentials. Just paste your token or username/password and we'll handle the rest.

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Beautiful JSON Formatting

Syntax-highlighted JSON editor for both requests and responses. No more squinting at minified JSON. Copy responses with one click, or use our JSON beautifier for even more formatting options.

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Query Parameters Builder

Visual interface for managing URL query parameters. Add, edit, enable, or disable params without manually editing the URL. Perfect for testing pagination, filters, or search APIs with multiple query string values.

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Response Analysis

View response status codes, timing metrics, headers, and body all in one place. Switch between formatted body view, raw headers table, and complete HTTP response. Download responses or share API configurations with your team.

Need More Data Processing Tools?

Working with different data formats? Check out our complete suite of conversion and validation tools:

• JSON to CSV Converter• JSON Validator• JSON to XML• XML to JSON• YAML to JSON• JSON Diff Tool

Frequently Asked Questions

How do I import a cURL command?

Super easy! Open your browser's DevTools (F12), go to the Network tab, right-click any request, and select "Copy as cURL" (or "Copy → Copy as cURL" in Chrome). Then switch to our "cURL" tab, paste the command, and click "Parse cURL Command".

The tool instantly extracts everything—URL, HTTP method, headers, request body, and even authentication. It's like magic, but it's just smart cURL parsing. Works with cURL commands from Chrome, Firefox, Safari, and Edge.

Can I test APIs that require authentication?

Absolutely! Authentication is built right in. Head to the "Auth" tab and choose your authentication type:

  • Bearer Token: Perfect for JWT tokens and OAuth 2.0 APIs. Just paste your token and we'll add the Authorization header automatically.
  • Basic Auth: Enter your username and password, and we'll handle the Base64 encoding for you.
  • Custom Headers: Need API keys or custom auth? Add them manually in the Headers tab with full control.

What HTTP methods are supported?

All standard HTTP methods are supported: GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS. Request body is supported for POST, PUT, PATCH, and DELETE methods.

Does it work with CORS-protected APIs?

Requests are made directly from your browser, so CORS policies apply. If you encounter CORS errors, you may need to use the API's CORS settings or test from a server-side environment. Public APIs usually allow CORS.

Can I save my requests?

Currently, requests are stored in your browser session. For persistent storage, you can copy the cURL equivalent or save request details manually. We're working on adding request history and collections features.

Is the API tester free to use?

Yes, completely free with no limitations on the number of requests. No registration required.