Convert Any cURL Command Into Working Code
A cURL command is the universal shorthand for an HTTP request. It shows up in API documentation, in the copy-as-cURL menu of browser dev tools, in Postman exports, and in bug reports where a colleague pastes the exact call that failed. The problem is that a cURL string is not something you can drop into an application. You still have to translate its flags into the request shape your language expects, and that manual rewrite is where mistakes creep in. This converter reads a cURL command and produces equivalent, ready-to-run code in the language you choose, so the request you tested on the command line becomes the request your program actually sends.
The tool works by parsing the command the same way a shell would, then mapping each recognised flag onto a request property. The URL is pulled out as the target. The -X or --request flag sets the HTTP method. Every -H or --header flag becomes an entry in a headers object. A -d or --data flag becomes the request body, and it carries an important rule: supplying data without an explicit method implies POST, exactly as cURL itself behaves, so the generated code uses POST even when no -X appears. A -F flag is treated as multipart form data rather than a raw string body. A -u user:pass flag is expanded into an Authorization header whose value is the word Basic followed by the base64 encoding of the user:pass pair. Once the request is modelled this way, the tool emits it in the idioms of the target language, choosing fetch or axios for JavaScript, the requests library for Python, the standard net/http client for Go, and the conventional HTTP classes for PHP, Java, and C#.
A concrete example makes the mapping clear. Take the command curl -u user:pass https://api.x with no other flags. The converter recognises the basic auth flag, computes base64 of the literal string user:pass, and produces the value dXNlcjpwYXNz. It then generates code that sends a GET request to https://api.x with a single header, Authorization set to Basic dXNlcjpwYXNz. In JavaScript that becomes a fetch call with a headers object; in Python it becomes a requests.get with a headers dictionary. Because the base64 value is computed for you, the generated snippet already contains the correct credential string and runs without any further editing, which is the whole point of skipping the manual translation step.
Day to day, this converter fits neatly into a few workflows. When an API vendor documents an endpoint only as a cURL example, you paste it and immediately get code in your project's language instead of hand-porting each header. When you reproduce a browser request, you use copy-as-cURL in dev tools, drop the result here, and get a clean snippet that mirrors what the page actually sent, cookies and headers included. When you are onboarding a new teammate, sharing a single cURL line is easier than pasting a block of language-specific code, and each person converts it into whatever stack they use. When you write integration tests, you convert the documented request once and adapt the generated code into your test harness, confident the method, headers, and body match the original.
A few tips keep the results accurate. Watch how your shell quotes the command, because unbalanced single and double quotes are the most common reason a paste parses incorrectly, especially around a JSON body. Remember the implicit POST rule so you are not surprised when a data flag alone produces a POST rather than a GET. Treat the generated basic auth header as a real credential and avoid committing it to a repository, since base64 is trivially reversible and offers no protection. Finally, know the limits: exotic or rarely used cURL flags may not have a direct equivalent in every language and can be skipped, so review the output before shipping it. Everything runs in your browser, nothing is uploaded, and your commands and credentials never leave your device.
