What cURL flags and options are supported by this converter?

The converter supports standard HTTP methods (-X, --request), headers (-H, --header), payload bodies (-d, --data, --data-raw, --data-binary, --data-urlencode), Basic Auth (-u, --user), bearer tokens, cookies (-b, --cookie), user agents (-A), redirects (-L), and multi-line backslash syntax.

How do I copy a cURL command directly from Chrome, Firefox, or Safari DevTools?

Open DevTools (F12 or Cmd+Option+I), navigate to the Network tab, execute the request, right-click the specific network row, navigate to "Copy", and select "Copy as cURL (bash)" or "Copy as cURL (POSIX)".

How does the converter handle JSON vs form-urlencoded payload bodies?

The parser analyzes both the Content-Type header and body structure. For application/json, it generates parsed object literals with JSON.stringify() or json=dict. For form-urlencoded payloads, it generates URLSearchParams or form dictionaries.

Can I convert cURL commands containing multipart/form-data or file uploads?

Yes. Commands containing -F or --form flags are automatically converted to standard FormData constructs in JavaScript/TypeScript, files tuples in Python Requests, or multipart/form-data buffers in Go.

Are my authorization tokens, passwords, or cookies kept private?

Yes, 100%. All cURL parsing, tokenization, and code compilation occur entirely inside your browser using client-side JavaScript. No request data or API keys are ever transmitted across the network.

Dev & Data Essential

cURL Command to Fetch, Axios, Python, Go & PHP Converter

Convert cURL commands instantly into production-ready code snippets for JavaScript (Fetch, Axios), Node.js, Python (Requests, httpx), Go (net/http), PHP (cURL, Guzzle), Rust, and Java with full header, cookie, and body parsing.

Multi-target code generation: JavaScript (Fetch, Axios), Python (Requests, HTTPX), Go, PHP (cURL, Guzzle), Rust (Reqwest), and Dart

Intelligent AST parser for complex cURL flags: --data-raw, -d, -H, -u, -X, --cookie, --compressed, and multi-line syntax

Automatic JSON and form-urlencoded body serialization with proper Content-Type headers

Handles Basic Auth, Bearer tokens, custom headers, and query parameters cleanly

100% Client-side AST compilation: zero API credentials or sensitive authorization tokens sent over the network

Mastering API Interoperability: Transforming cURL Commands into Idiomatic Multi-Language Code

In-depth specifications, architectural mechanics, real-world code implementations, and industry best practices.

The Ubiquity of cURL and the Modern Multi-Language API Landscape

cURL (Client URL), authored by Daniel Stenberg in 1997, remains the universal lingua franca for command-line HTTP communication and API documentation (RFC 9110 / HTTP/1.1 and RFC 9113 / HTTP/2). Web browsers, Postman, Insomnia, and command-line terminals allow engineers to export any network interaction directly as a cURL command. However, translating bash cURL invocations into idiomatic code across modern stacks (Node.js Fetch, Python Requests, Go net/http) is often tedious and error-prone. An automated AST-based converter bridges command-line inspection and backend implementation seamlessly.

Implementation Example

// Raw Bash cURL Command copied from DevTools
curl 'https://api.example.com/v1/orders' \
  -X POST \
  -H 'Authorization: Bearer sec_tok_991823' \
  -H 'Content-Type: application/json; charset=utf-8' \
  --data-raw '{"orderId":"ORD-4821","amount":149.50,"currency":"USD"}'

Lexical Analysis & Command-Line Argument Parsing Mechanics

Converting a cURL command requires tokenizing shell syntax according to POSIX shell grammar rules. The parser processes flags including HTTP method definitions (-X, --request), custom request headers (-H, --header), basic authentication (-u, --user), query parameters (-G, --get), cookie jars (-b, --cookie), and payload data (--data, -d, --data-raw, --data-binary, --data-urlencode). Once tokenized, an abstract HTTP request model is constructed with distinct fields for URL, method, headers map, authentication credentials, and body payload representation.

Implementation Example

// Transformed Abstract Request Model (Intermediate Representation)
interface ParsedCurlRequest {
  url: string;
  method: 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE';
  headers: Record<string, string>;
  auth?: { user: string; pass: string } | { bearer: string };
  body?: { type: 'json' | 'form' | 'raw'; content: string | Record<string, unknown> };
}

Step-by-Step Practical Workflow: From Browser DevTools to Production Code

• Follow this streamlined workflow to inspect and replicate any real-world HTTP request:
• Step 1: Open Chrome, Firefox, or Safari DevTools and navigate to the Network tab.
• Step 2: Trigger the network action, right-click the HTTP request, and select Copy -> Copy as cURL (bash / POSIX).
• Step 3: Paste the cURL command into WebCraftKit cURL to Code.
• Step 4: Select your desired target language: TypeScript Fetch, Axios, Python Requests, Python HTTPX, Go net/http, or PHP Guzzle.
• Step 5: Click Copy Code and paste the idiomatic snippet directly into your backend service or frontend client.

Implementation Example

// Converted Idiomatic TypeScript (Fetch API)
async function createOrder() {
  const response = await fetch('https://api.example.com/v1/orders', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer sec_tok_991823',
      'Content-Type': 'application/json; charset=utf-8',
    },
    body: JSON.stringify({
      orderId: 'ORD-4821',
      amount: 149.50,
      currency: 'USD',
    }),
  });

  if (!response.ok) {
    throw new Error(`HTTP error! status: ${response.status}`);
  }
  return await response.json();
}

Multi-Language Idiomatic Implementations: Python, Go & PHP

Different languages require distinct idiomatic paradigms for handling network requests. In Python, the requests library handles JSON serialization and header management compactly. In Go, the net/http standard library requires creating an http.NewRequestWithContext with an io.Reader buffer and deferring response body closure. In PHP, modern applications utilize Guzzle or native curl_init handles.

Implementation Example

# Python (Requests)
import requests

url = "https://api.example.com/v1/orders"
headers = {
    "Authorization": "Bearer sec_tok_991823",
    "Content-Type": "application/json; charset=utf-8"
}
payload = {
    "orderId": "ORD-4821",
    "amount": 149.50,
    "currency": "USD"
}

response = requests.post(url, json=payload, headers=headers)
print(response.status_code, response.json())

Security Best Practices, Sanitization & Privacy Safeguards

When working with cURL commands copied from live sessions, authorization tokens, cookies, and API keys are embedded directly in the command. Always replace raw secrets with environment variables (e.g., process.env.API_SECRET or os.getenv("API_KEY")) before committing code to version control. WebCraftKit executes all cURL parsing and code generation 100% locally in your web browser with zero server transmission, guaranteeing complete secrecy for your credentials.

Implementation Example

// Best Practice: Abstract secrets to environment variables
const API_TOKEN = process.env.API_BEARER_TOKEN;
if (!API_TOKEN) throw new Error('Missing API_BEARER_TOKEN environment variable');

const headers = {
  'Authorization': `Bearer ${API_TOKEN}`,
  'Content-Type': 'application/json',
};

Knowledge Base & Clarifications