🔌 API Tester
Send HTTP requests and inspect responses. A browser-based API client, like a mini Postman.
Note: This tool runs entirely in your browser using the fetch() API. Due to CORS (Cross-Origin Resource Sharing) restrictions, some APIs may block requests from web pages. If a request fails, the target server may not allow cross-origin requests. Public APIs and APIs with permissive CORS headers will work fine. For restricted APIs, consider using a dedicated API client or a CORS proxy.
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Free Browser-Based API Tester
Test HTTP APIs directly in your browser with this lightweight API client. Supports GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS methods. Add custom headers, set request bodies (JSON, form data, or raw text), and configure authentication (Bearer token or Basic Auth). View response status codes, headers, timing, and body content with JSON syntax highlighting. Request history is saved locally so you can quickly re-send previous requests. All processing happens in your browser. Your data never leaves your device. No account or installation required.