HTTP Tester
Request Configuration
Response
Response will be displayed here after sending the request
Instructions
Basic Usage
- Enter the full API URL (including http:// or https://)
- Select the appropriate request method (GET, POST, PUT, etc.)
- Fill in POST parameters if you need to send data
- Click the "Submit" button to send the request
Advanced Features
- Supports custom headers such as Authorization, User-Agent, etc.
- Supports setting cookies for authentication
- POST parameters support both form-encoded and JSON formats
- View complete response header information
Tips
This tool sends requests through a server proxy, avoiding browser CORS restrictions. Do not use it for sensitive APIs or data.
HTTP Tester
HTTP Tester is a free online API debugging tool supporting GET, POST, PUT, DELETE, PATCH and other methods, with custom headers, query parameters, and request bodies (JSON, form data, plain text). Responses are automatically formatted for easy reading.
No desktop client like Postman to install — open the page and start sending requests. Ideal for quickly verifying endpoints, troubleshooting production issues, and integrating third-party APIs.
How to Use
- Choose a request method (GET/POST/PUT/DELETE, etc.) and enter the API URL
- Configure headers, query parameters, and the request body as needed
- Send the request and inspect the formatted status, headers, and body
- Tweak parameters and retest until the API behaves as expected
FAQ
Can this replace Postman?
For everyday endpoint verification and debugging, yes — no installation needed. For team collaboration and automated test suites, a dedicated client is still recommended.
Which request methods are supported?
GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS, and other common HTTP methods.
Can I set custom headers and bodies?
Yes. Headers and query parameters are fully editable, and bodies support JSON, form data, and plain text.
Is it free?
Completely free, no registration required.