API Integration · Zero Leakage · Multi-Language

cURL to Fetch & Axios Converter

Paste any terminal cURL command and convert it instantly into production-ready JavaScript fetch(), Axios, or Python requests code.

Presets:

cURL Command InputPOST /v1/users

async function sendRequest() {
  const response = await fetch('https://api.speed-drain.com/v1/users', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': 'Bearer sec_live_948f2b7a'
    },
    body: JSON.stringify({
          "username": "alex_dev",
          "email": "alex@speeddrain.test",
          "role": "engineer",
          "tier": "enterprise"
    })
  });

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

Parsed Request Metadata

HTTP Method:

POST

Destination Endpoint:

https://api.speed-drain.com/v1/users

Headers Extracted:

2 header(s)

cURL Command Flag Cheat Sheet & API Integration Guide

Essential cURL Flags Reference

-X, --request [METHOD]

Specifies the custom HTTP request method to use (e.g. GET, POST, PUT, DELETE, PATCH).

-H, --header [HEADER]

Adds extra HTTP headers to the request, such as Authorization tokens and Content-Type declarations.

-d, --data [DATA]

Sends HTTP POST data. Automatically implies POST unless a different method is explicitly specified via -X.

-u, --user [USER:PASS]

Supplies basic authentication credentials, which are Base64-encoded into the HTTP Authorization: Basic header.

Native fetch() vs. Axios: Choosing the Right API Client

When migrating network requests from the terminal into frontend or backend codebases, modern web standards offer two predominant paradigms:

Native fetch(): Built natively into all modern web browsers and Node.js runtimes (Node 18+). Zero dependency weight, high performance, and standards-compliant. Requires manual checks on response.ok since HTTP 4xx/5xx statuses do not reject the promise.
Axios: Third-party promise-based HTTP client featuring automatic JSON data transformation, request/response interceptors, request cancellation via AbortController, and automated 4xx/5xx exception throwing.