Question 1

What is a curl converter?

Accepted Answer

A curl converter is a tool that takes a curl command-line instruction and automatically generates equivalent HTTP request code in a programming language like Python, JavaScript, Go, PHP, or Node.js. Instead of manually translating curl flags, headers, and request bodies into your language’s HTTP library syntax, the converter does it instantly and accurately.

Question 2

Which curl flags are supported?

Accepted Answer

The converter supports all common curl flags including -X (method), -H (headers), -d/--data/--data-raw (body), -u (basic auth), -A (user agent), -b/--cookie (cookies), --compressed, -k (insecure), -L (follow redirects), -o (output), -I (HEAD), --connect-timeout, --max-time, --retry, -e (referer), and more. It also handles multiline commands with backslash continuations and both single and double quoted values.

Question 3

What programming languages can I convert to?

Accepted Answer

The tool currently supports five target languages: Python (using the requests library), JavaScript (using the native fetch() API), Go (using the net/http standard library package), PHP (using the cURL extension with curl_setopt), and Node.js (using node-fetch). Each language generates complete, ready-to-run code that you can paste directly into your project.

Question 4

Does the curl converter work with multiline commands?

Accepted Answer

Yes. The converter fully supports multiline curl commands that use backslash (\) line continuations, which are common when a curl command has many flags and headers. The tool joins the lines before parsing, so you can paste curl commands exactly as they appear in your terminal or shell scripts.

Question 5

Is my curl command data sent to a server?

Accepted Answer

No. The curl converter runs entirely in your browser. All parsing and code generation happens client-side, so your curl commands — including any headers, tokens, or request bodies they contain — never leave your device. This makes it safe to use even with sensitive authentication data.

Question 6

How does the converter handle authentication?

Accepted Answer

The -u (or --user) flag for basic authentication is automatically converted to an Authorization: Basic header with the appropriate Base64-encoded credentials. Bearer tokens passed via -H "Authorization: Bearer ..." are preserved as-is in the generated code. The output code will include the authentication header in the appropriate format for each target language.

Question 7

Can I convert curl commands with JSON request bodies?

Accepted Answer

Yes. The converter detects JSON request bodies (strings starting with { or [) and generates language-appropriate code. In JavaScript and Node.js, JSON bodies are wrapped in JSON.stringify() with proper object literals. In Python, the body is passed as the data parameter. In Go, it’s wrapped in strings.NewReader(). In PHP, it’s sent via CURLOPT_POSTFIELDS.

Question 8

Does it work on mobile devices?

Accepted Answer

Yes, the curl converter is fully responsive and works on all modern mobile browsers. The layout adapts to smaller screens, and all features — including the language tabs, code output, copy buttons, and parse result preview — are accessible on phones and tablets.

Flag	Description
-X, --request	Specify HTTP method (GET, POST, PUT, DELETE, PATCH, etc.)
-H, --header	Add a custom HTTP header to the request
-d, --data	Send data in the request body (sets POST if method not specified)
--data-raw	Send data without interpreting @ as a file reference
-u, --user	Add basic authentication credentials (user:password)
-A, --user-agent	Set the User-Agent header
-b, --cookie	Send cookies with the request
--compressed	Request compressed response (Accept-Encoding: gzip, deflate)
-k, --insecure	Skip SSL certificate verification
-L, --location	Follow HTTP redirects (3xx responses)
-o, --output	Write output to a file instead of stdout
-I, --head	Fetch headers only (HEAD method)
--connect-timeout	Maximum time to wait for connection
--max-time	Maximum total time for the request
--retry	Number of retry attempts on failure

Flag	Description
-X, --request	Specify HTTP method (GET, POST, PUT, DELETE, PATCH, etc.)
-H, --header	Add a custom HTTP header to the request
-d, --data	Send data in the request body (sets POST if method not specified)
--data-raw	Send data without interpreting @ as a file reference
-u, --user	Add basic authentication credentials (user:password)
-A, --user-agent	Set the User-Agent header
-b, --cookie	Send cookies with the request
--compressed	Request compressed response (Accept-Encoding: gzip, deflate)
-k, --insecure	Skip SSL certificate verification
-L, --location	Follow HTTP redirects (3xx responses)
-o, --output	Write output to a file instead of stdout
-I, --head	Fetch headers only (HEAD method)
--connect-timeout	Maximum time to wait for connection
--max-time	Maximum total time for the request
--retry	Number of retry attempts on failure

Cookie Preferences

Curl Converter

What is a Curl Converter?

How to Use

Supported Languages

Common Curl Flags Reference

Frequently Asked Questions