API Tester
Test REST API endpoints directly in your browser. Send GET, POST, PUT, DELETE requests and view responses with headers.
How to Test REST APIs
- 1 Select the HTTP method (GET, POST, PUT, DELETE)
- 2 Enter the API endpoint URL
- 3 Add headers if required for authentication
- 4 Include a JSON body for POST/PUT requests
- 5 Click Send Request to execute
- 6 View the response status, headers, and body
Frequently Asked Questions
Is my code or data stored anywhere? ▼
No. All developer tools process data locally in your browser. Nothing is sent to any server or logged.
Can I use these tools offline? ▼
Yes! After the initial page load, most developer tools work without an internet connection.
Are there API limits? ▼
No limits. Since processing happens in your browser, you can use the tools as much as you need.
Is the output compatible with production use? ▼
Yes. Our tools produce standard-compliant output suitable for production environments.
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Last updated: January 15, 2026 · v2.1