Enable if you get CORS errors. Routes request through a public proxy.
Headers (JSON)
Request Body
Status: -Time: -Size: -
Response
{}
🌍 Used by 50,000+ users⭐ 4.9/5 rating🔒 100% Private🚫 No Ads, No Signup
API Tester Features
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100% Free & Private
No ads, no signup, no watermark. API debugging runs in your browser with local session state.
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HTTP Request Lab
Test GET, POST, PUT, PATCH, DELETE endpoints and inspect response payload quickly.
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Headers & JSON Body
Edit headers and request body using JSON input for REST API integration workflows.
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Fast Response Inspector
Track status code, response time, payload size, then copy response in one click.
Frequently Asked Questions
An API tester is an HTTP client used to send requests and inspect responses from REST APIs. Developers use it for endpoint debugging, payload validation, integration checks, and quick backend smoke tests.
Yes. You can test common HTTP methods including GET, POST, PUT, PATCH, and DELETE. You can also configure request headers and JSON body for API workflows.
Browser API testing follows CORS rules. If target server does not allow your origin, request may fail in frontend context. This is a browser security behavior, not a bug in the tester.
Yes. Response panel supports one-click copy. You can reuse response payload in debugging, documentation, mock setup, and data transformation flows.
Yes, 100% free with no ads, no registration, no watermark, and no usage limits. All processing happens locally in your browser — your data is never uploaded to any server.