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cURL → Code Snippet
100% LocalConvert cURL to fetch or Axios JavaScript.
cURL → Code Snippet
cURL → code
Convert a cURL command into JavaScript fetch or Axios snippets. Parsing covers common flags (-X, -H, -d).
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This tool runs entirely in your browser. Your input is never uploaded, logged, or sent to AllDevToolsHub or anyone else, and it keeps working offline once the page has loaded.
Paste a curl command to generate equivalent code in Python, JavaScript, Go, or PHP.
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Overview
What is cURL → Code Snippet?
Paste a cURL command and get equivalent JavaScript using fetch or Axios. Parses common flags like -X, -H, and -d. Great for porting API examples to code.
FAQ
Frequently Asked Questions
Reference
Technical Deep Dive
cURL → Code Snippet
Paste a cURL command and get equivalent JavaScript using fetch or Axios. Parses common flags like -X, -H, and -d.
curl to fetch / Axios
Paste a curl line (copied from DevTools or a docs page) and get an equivalent JavaScript request with headers and body mapped over.
Handles the awkward flags
Understands --data-raw, -F form fields, --compressed, and multiple -H headers rather than choking on them.
Local conversion
The command — often containing a real bearer token — is parsed in the tab and never sent anywhere.
01 Instruction Mapping Matrix
| cURL Flag | Fetch Equivalent | Axios Equivalent |
|---|---|---|
-X POST | method: 'POST' | axios.post() |
-H 'K: V' | headers: { K: 'V' } | headers: { K: 'V' } |
-d '{...}' | body: JSON.stringify() | data: {...} |
-u user:pass | Authorization: Basic | auth: {...} |
02 Snippet Generation Pipeline
1
Command Tokenization
The CLI string is parsed into discrete flags and values using a POSIX-compliant shell lexer.
2
Payload Analysis
JSON bodies are detected and formatted, while headers are normalized to follow HTTP/1.1 and HTTP/2 standards.
3
Code Serialization
The extracted request state is serialized into an asynchronous JS snippet with proper error handling blocks.
03 Advanced cURL Conversion Patterns
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Authentication Header Handling This tool correctly converts cURL authentication patterns: -u user:pass becomes Basic auth headers, -H "Authorization: Bearer token" is preserved as-is, and --negotiate triggers Kerberos/NTLM flows. OAuth 2.0 flows with --data "grant_type=client_credentials" are converted to the appropriate library-specific auth methods in each target language.
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Multipart Form Data cURL -F or --form flags for file uploads are converted to the correct multipart handling: FormData in JavaScript, requests.post(files=...) in Python, multipart.NewWriter in Go, and CURLFile in PHP. This is the most complex conversion because each language handles multipart boundaries differently.
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RJRahul JalavadiyaFounder & Lead Engineer
Last reviewed 2026-07-29