API Tester
Professional API testing tool for developers. Test REST APIs, analyze responses, manage authentication, and debug HTTP requests with comprehensive features and detailed response analysis.
API Request Builder
Headers
Authentication
API Response
No Response Yet
Send an API request to see the response here
Request History
No request history yet
How to Use the API Tester
Enter API Details
Select HTTP method and enter your API endpoint URL. Choose from GET, POST, PUT, DELETE, and other methods.
Configure Headers
Add custom headers, set content type, and configure authentication tokens or API keys as needed.
Add Request Body
For POST/PUT requests, add JSON, XML, or form data payload with built-in formatting and validation.
Send & Analyze
Send the request and analyze response status, headers, body, timing, and save to history for future reference.
Key Features
Fast Testing
Quick API testing with instant response analysis and comprehensive error handling for efficient debugging.
Authentication Support
Support for Bearer tokens, Basic Auth, API keys, and custom authentication methods for secure API testing.
Multiple Formats
Handle JSON, XML, form data, and plain text with syntax highlighting and automatic formatting.
Request History
Automatic request history tracking with the ability to replay, modify, and export previous requests.
Response Analysis
Detailed response analysis including status codes, headers, cookies, response time, and payload size.
Export & Save
Export responses, save request templates, and download results in various formats for documentation.
Advanced Features
Response Time Measurement
Accurate response time tracking to help optimize API performance and identify bottlenecks.
Cookie Management
Automatic cookie handling and session management for testing authenticated API endpoints.
Syntax Highlighting
Beautiful syntax highlighting for JSON, XML, and other response formats for better readability.
Request Sharing
Share API requests with team members through exportable configurations and templates.
Use Cases
API Development
Test and debug APIs during development phase with comprehensive request/response analysis.
Debugging Issues
Troubleshoot API integration problems with detailed error analysis and response inspection.
API Documentation
Create API documentation by testing endpoints and exporting request/response examples.
Performance Testing
Monitor API performance, response times, and payload sizes for optimization purposes.
Frequently Asked Questions
What HTTP methods are supported?
Our API tester supports all standard HTTP methods including GET, POST, PUT, DELETE, PATCH, HEAD, and OPTIONS. You can easily switch between methods using the dropdown selector.
Can I test APIs with authentication?
Yes! We support multiple authentication methods including Bearer tokens, Basic Authentication, and API keys. You can also add custom headers for other authentication types.
Is my API data secure and private?
All API requests are sent directly from your browser to the target server. We don't store or log any of your API data, ensuring complete privacy and security.
Can I save and reuse API requests?
Yes, you can save requests locally in your browser and reload them later. You can also export request configurations and import them when needed.
What response formats are supported?
The API tester can handle any response format including JSON, XML, HTML, plain text, and binary data. JSON and XML responses are automatically formatted and highlighted.