How to use the cURL to Fetch and Axios Converter
- 1. Paste cURLFrom API documentation, Postman or DevTools (Copy as cURL).
- 2. Pick a targetfetch for browsers and Node 18+, or axios.
- 3. Copy the codeGet ready async code with error handling.
What is understood
-X/--request: the method. Without it, GET, or POST if there is a body.-H: headers.-A,-eand-bset the User-Agent, Referer and Cookie headers.-d,--data-raw,--data-binary,--data-urlencodeand--json: the request body. JSON bodies become JavaScript objects.-F: multipart form fields, turned into a FormData object.-u user:pass: Basic authentication.-G: moves data into the query string.- Quotes, backslash line breaks and Windows ^ line breaks.
Flags with no JavaScript meaning, such as -L, -s or --compressed, are ignored, and others are listed in a note.
Worked example
The sample is a POST to https://api.example.com/v1/students with a bearer token, a JSON content type and a JSON body. The result says POST request · api.example.com · 2 headers, JSON body, and the fetch code is:
const response = await fetch("https://api.example.com/v1/students", {
method: "POST",
headers: { … },
body: JSON.stringify({ name: "Asha", course: "Python" })
});
if (!response.ok) throw new Error(`HTTP ${response.status}`);Unlike axios, fetch does not throw on 404 or 500, which is why the generated code checks response.ok. Remember that calling another site's API from a browser also needs that server to allow CORS; the same request may work from Node.js but fail in the browser.
Frequently asked questions
Is my token safe?
The conversion runs in your browser and nothing is sent. Still, replace real tokens with placeholders before sharing code.
Can I convert to Python requests?
Not in this tool yet; it targets JavaScript fetch and axios.
Why do I get a CORS error in the browser?
The API server must send Access-Control-Allow-Origin for your site. Call it from your back end instead if it does not.
Is the curl to fetch and axios converter free?
Yes, it is free. Your first conversion asks for your name and WhatsApp number once, and after that the curl to fetch and axios converter and every other Uncodemy tool open without the form.