Online API Tester - Test REST APIs from Your Browser

Free online API Tester, pure client-side. Supports GET/POST/PUT/DELETE HTTP methods with custom headers, body, and query parameters. View response status and data in real-time.

🔒 100% Client-Side

🔗 Request Settings

📋 Headers

Query Parameters

📝 Request Body

🔒 Requests go directly from your browser. This tool does NOT log any data.

How to Use

Follow these simple steps. All processing happens locally in your browser.

Input your data or upload your file in the tool area above.
Adjust any available options to customize the output.
Click the process button and get your result instantly.

FAQ

What HTTP methods are supported?

All common methods: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS. Body section auto-shows for POST/PUT/PATCH.

Are my requests logged or saved?

No. Requests go directly from your browser to the target API. This tool does NOT record, save, or forward any data.

Why do some requests fail?

Likely CORS restrictions. If the target API doesn't set Access-Control-Allow-Origin headers, the browser blocks the request. Try a CORS-supporting API or use a server-side proxy.

Does it support HTTPS?

Yes. You can use http:// or https:// URLs. HTTPS is recommended for encrypted data transfer.

Can I upload files?

File upload is not supported yet. For file upload testing, use Postman or curl.

Technical Details

This tool runs 100% in your browser using modern web technologies. No data is ever sent to any server.

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