cURL Command Generator
Generate cURL commands easily with this online cURL command builder. Configure HTTP methods, headers, authentication, request body, and advanced options to create ready-to-use cURL commands. Perfect for API testing, debugging, and sharing HTTP requests.
Request Configuration
Generated cURL Command
Generated command will appear here
Enter a URL to start building your cURL command
About cURL Commands
What is cURL? cURL is a command-line tool for making HTTP requests. It's widely used for testing APIs, debugging web services, and automating HTTP interactions.
Automatic Escaping: This tool automatically escapes special characters in your headers, body, and other parameters to ensure your cURL command works correctly in the shell.
Line Breaks: Long commands are formatted with backslashes (\) for better readability. These allow you to split the command across multiple lines in your terminal.
Common Options: The tool supports the most commonly used cURL options including custom headers (-H), request methods (-X), authentication (-u), request data (-d), and various flags like -L (follow redirects), -v (verbose), and -k (insecure).
About cURL Command Generator
The cURL Command Generator is a comprehensive tool for building cURL commands with a user-friendly interface. Configure all aspects of an HTTP request including URL, method (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS), custom headers, query parameters, request body, and authentication (Bearer token, Basic Auth, API key). Includes advanced options like follow redirects (-L), verbose mode (-v), insecure SSL (-k), custom user agent, timeout settings, and more. Generate properly formatted cURL commands with escaped special characters and copy them with one click. Ideal for developers who need to quickly construct cURL commands without memorizing syntax.
Why use a cURL Command Generator?
Constructing cURL commands manually can be error-prone and time-consuming, especially when dealing with complex authentication, multiple headers, or special characters that need escaping. This cURL command generator simplifies the process with an intuitive interface that handles all the complexity for you. Build commands visually, preview them in real-time, and copy production-ready commands with proper escaping. Perfect for creating cURL examples for documentation, sharing API requests with team members, testing endpoints during development, or learning cURL syntax. The tool automatically formats long commands with line breaks for readability and ensures special characters are properly escaped.
Who is it for?
Essential for backend developers testing APIs, DevOps engineers debugging HTTP endpoints, QA testers validating API behavior, and technical writers creating API documentation with cURL examples. Perfect for developers learning cURL syntax, teams standardizing API testing procedures, API providers documenting endpoints with example commands, and anyone who needs to quickly generate cURL commands without memorizing complex syntax and escaping rules.
How to use the tool
Enter the target URL for your HTTP request
Select the HTTP method (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS)
Add custom headers with key-value pairs (add or remove as needed)
Configure authentication: Basic Auth, Bearer Token, or API Key
Add request body for POST/PUT/PATCH requests
Enable advanced options like follow redirects, verbose mode, or insecure SSL
Set custom user agent, timeout, or max redirects if needed
Configure output options like saving to file or including headers
View the generated cURL command in real-time
Copy the command with one click to use in terminal or documentation
Use the clear/reset button to start over with a new command
Frequently Asked Questions
How do I generate a curl command online?
Fill in the request parameters: URL, HTTP method (GET, POST, PUT, DELETE, etc.), headers (Content-Type, Authorization, custom), body (JSON, form-data, raw), query parameters, basic auth credentials, follow-redirects setting, output format. The tool generates the equivalent curl command. Copy and paste into a terminal. Runs entirely in your browser — your inputs never leave the device. Useful for: API debugging, sharing reproducible requests with team, documenting API calls.
What is curl?
curl is a command-line tool for transferring data via URLs — primarily HTTP/HTTPS but also FTP, SCP, IMAP, and many other protocols. Available on virtually every OS (preinstalled on macOS/Linux; widely installable on Windows). Used for: API testing, downloading files, scripting HTTP interactions, network debugging. curl's syntax: `curl [options] <URL>`. The tool generates the full command including all the options matching your specified request.
Is my data sent to a server?
No — command generation runs entirely in your browser. The tool builds the curl command string from your inputs; no actual HTTP request is made by the tool itself. Your request data (URL, headers, body) is used only to construct the command string. Zero HTTP requests during generation. Verify in DevTools' Network tab. Safe for sensitive API credentials and request data.
What's the difference between curl and Postman / Insomnia?
**curl**: command-line, scriptable, no GUI; native on every Unix-like system; great for automation, scripts, CI/CD. **Postman / Insomnia**: GUI applications; collections of requests, environments, automated tests; great for interactive API exploration and team collaboration. Both make HTTP requests; curl is for automation, GUI tools for exploration. This generator helps bridge: design the request in a visual form, then export as curl for scripts.
How do I send a POST request with JSON body?
`curl -X POST -H 'Content-Type: application/json' -d '{"key":"value"}' https://api.example.com/endpoint`. Breakdown: `-X POST` sets the method, `-H 'Content-Type: application/json'` sets the header, `-d '{...}'` sets the body. The tool generates this from your form inputs. For larger JSON, use `-d @file.json` to read from a file. For HTTPS endpoints with self-signed certs (dev only), add `-k` to skip cert verification.
How do I include authentication?
Several methods. **Bearer token (OAuth/JWT)**: `-H 'Authorization: Bearer YOUR_TOKEN'`. **Basic auth**: `-u username:password` (or `-H 'Authorization: Basic <base64-encoded>'`). **API key in header**: `-H 'X-API-Key: YOUR_KEY'`. **API key in query string**: include in URL `?api_key=YOUR_KEY`. **Cookies for session auth**: `-b 'sessionid=abc'`. The generator handles these patterns. For sensitive credentials in scripts, use environment variables: `-H 'Authorization: Bearer $API_TOKEN'`.
Can I generate curl commands for HTTPS APIs?
Yes — HTTPS is the default. curl uses the OS's CA bundle for certificate verification automatically. For APIs with self-signed certs (dev environments), add `-k` (or `--insecure`) to skip verification — production code should never use `-k`. For client certificate auth (`mTLS`): `--cert client.pem --key client.key`. For specific TLS versions: `--tlsv1.2` or `--tlsv1.3` to force a version.
How do I follow redirects?
Add `-L` (or `--location`): `curl -L https://example.com/redirect-source`. Without `-L`, curl follows neither 3xx redirects nor returns the final destination. With `-L`, curl follows the redirect chain (up to a default limit, configurable with `--max-redirs`). For debugging redirect chains, use `-v` (verbose mode) to see each redirect step. For requests where you want to inspect the redirect response (e.g., the Location header), omit `-L`.
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