cURL Command Builder

cURL is a command-line tool for transferring data to and from servers using various protocols. It is most commonly used for making HTTP requests to APIs, downloading files, and testing web services. Developers use curl for automation, debugging, and scripting because it works across all platforms and can reproduce any web request a browser can make.

Select the authentication type from the dropdown: None, Basic, Bearer Token, or API Key. For Basic auth, enter your username and password. For Bearer tokens, paste your token string. For API keys, specify whether to send the key in a header or as a query parameter. The generated command will include the proper syntax for your chosen method.

Yes. Click the Import cURL button and paste your command. The parser will extract the method, URL, headers, body, and authentication settings into the visual editor. You can then modify any component and regenerate the command. Note that very complex shell scripts or commands with variable substitution may not parse completely.

Only query parameters with the checkbox enabled and a non-empty key are included. Check that your parameter has a key name and is marked as enabled. The URL preview updates automatically as you add or modify parameters.

Set the Body Type to File Upload and enter the file path. Alternatively, use Form Data and add a field with type set to File, then enter the filename. The generated command will use the @ prefix to tell curl to read from that file path.

JSON sends raw text with Content-Type: application/json using the -d flag. Form Data uses Content-Type: multipart/form-data with the -F flag, which supports file uploads and is how HTML forms submit data. Choose JSON for APIs; choose Form for file uploads or form submissions.

Yes. Select the PowerShell tab in the output section to get an Invoke-RestMethod command with proper parameter syntax. The tool also provides standard Windows command prompt format with ^ line continuations.

The -L flag tells curl to follow HTTP 3xx redirect responses to their final destination. Without this, curl stops at the redirect response and does not proceed to the redirected URL. Most API clients enable this by default.

No. The cURL Command Builder runs entirely in your browser. No request data, URLs, or generated commands are transmitted to any external service. You can verify this by checking your browser's network inspector.

The parser extracts standard curl flags but may not preserve custom shell variables, command substitutions, or complex multi-line constructs. Static headers, data, and standard options are fully supported. Review the parsed configuration after import to ensure completeness.

Enter your desired User-Agent string in the Options section under Custom User-Agent. If left blank, curl uses its default identifier. Some APIs require specific User-Agent strings for access.

HTTPie is a modern, user-friendly command-line HTTP client with sensible defaults, expressive syntax, and colored output. The HTTPie tab generates equivalent commands that are often shorter and more readable than raw curl. It is useful for documentation and interactive testing.