API Tester
Developer ToolsTest REST APIs with custom headers, methods, and body. View response time and status.
How to use API Tester
- 1Enter your input in the text area above
- 2Click the action button to process your data
- 3View the result and copy it to your clipboard
Common Use Cases
Quick Processing
Process your data quickly and efficiently.
Secure & Private
All processing happens in your browser.
Free to Use
This tool is completely free with no signup.
Mobile Friendly
Works on any device with a browser.
Frequently Asked Questions
What HTTP methods are supported?
We support all standard HTTP methods: GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS. You can also specify custom methods. For each request, you can add: headers (Authorization, Content-Type, etc.), query parameters, and request body (JSON, form-data, text).
Can I see response details?
Yes! Response panel shows: status code (200, 404, 500, etc.), response time (in ms), response size, headers, and formatted body (auto-detects JSON, XML, HTML, or plain text). JSON responses are automatically beautified and syntax-highlighted.
Is it safe for testing production APIs?
This tool runs in your browser and makes direct requests from your machine. CORS restrictions apply (browsers block cross-origin requests unless the API allows it). For testing APIs without CORS, use a browser extension or server-side tool. Never test destructive operations (DELETE) on production without caution.
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