cURL to Code Converter Online — Free cURL to JavaScript, Python, Go & 12+ Languages
cURL to Code Converter
Convert cURL commands to code in 12+ programming languages instantly.
Free online cURL to code converter. Paste any curl command and instantly generate idiomatic code in JavaScript (fetch, Axios, Node.js), Python (requests, http.client), Go, PHP, Ruby, Java, C#, Rust, Swift, Kotlin, and PowerShell. Supports all common cURL flags: headers, body data, basic auth, cookies, multipart forms, proxies, and SSL options. Includes a request inspector showing parsed URL, method, headers, and body type. Runs entirely in your browser — no cURL command is ever sent to a server.
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Tags: curl, converter, http, fetch, requests, api, code-generator
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How to cURL to Code Converter Online
Paste your cURL command into the input area on the left. Multi-line curl commands with backslash continuations are supported.
Choose your target language from the language selector in the bottom bar — JavaScript fetch, Axios, Python requests, Go, PHP, Ruby, Java, C#, Rust, Swift, or Kotlin.
Click Convert or press ⌘↵ to generate idiomatic code instantly.
Toggle the Request Inspector (⌘⇧I) to verify the parsed URL, method, headers, body, and authentication.
Copy the generated code with ⌘⇧C, download it as a file, or share your cURL command via a compressed URL.
cURL to Code Converter Features
14 language targets: JavaScript fetch, Axios, Node.js http, Python requests, Python http.client, Go net/http, PHP cURL, Ruby Net::HTTP, Java HttpClient, C# HttpClient, Rust reqwest, Swift URLSession, Kotlin OkHttp, and PowerShell.
Complete cURL flag support: -X, -H, -d, --data-raw, --data-binary, --data-urlencode, -F (multipart), -u (basic auth), -b (cookies), -L (follow redirects), -k (insecure), --compressed, -o, --connect-timeout, -m, --proxy.
Smart body type detection: automatically identifies JSON body, form-urlencoded, and multipart data from the cURL flags and content.
Request inspector: visual breakdown of the parsed request showing URL, method, header count, body type, auth type, and cookies.
Multipart form support: handles -F file uploads and form fields with correct multipart/form-data encoding per language.
Basic authentication: parses -u user:password and generates language-specific auth code (Authorization header, auth parameter, etc.).
Line continuation support: correctly parses multi-line cURL commands using backslash line continuations.
Auto-convert mode: regenerates code as you type for instant feedback.
Shareable URLs: gzip-compresses your cURL command into a URL parameter for sharing with teammates.
Works entirely in your browser — no cURL commands are ever sent to any server. Your API keys and tokens stay private.
Keyboard shortcuts: ⌘↵ to convert, ⌘⇧C to copy, ⌘⇧K to clear, ⌘⇧I to inspect.
Supported SQL Dialects
The cURL to Code Converter supports 12 SQL dialects. Select the right dialect for accurate formatting and keyword recognition.
- JavaScript — fetch()
- Modern browser-native HTTP API using async/await. Works in all modern browsers and Node.js 18+.
- JavaScript — Axios
- Popular promise-based HTTP client for browser and Node.js. Generates config-object style with response interceptors.
- Node.js — http/https
- Built-in Node.js modules with zero external dependencies. Uses the native request/response stream API.
- Python — requests
- The de facto standard Python HTTP library. Generates idiomatic code with session objects, auth tuples, and JSON body detection.
- Python — http.client
- Python standard library HTTP client. Zero external dependencies, useful in restricted environments.
- Go — net/http
- Go standard library HTTP client. Generates idiomatic Go with proper error handling and defer body close.
- PHP — cURL
- PHP cURL extension using curl_init(), curl_setopt(), curl_exec(). The most common PHP HTTP pattern.
- Ruby — Net::HTTP
- Ruby standard library HTTP client. Generates URI-based requests with proper SSL configuration.
- Java — HttpClient
- Java 11+ java.net.http.HttpClient. Modern, non-blocking API replacing the legacy HttpURLConnection.
- C# — HttpClient
- .NET HttpClient with async/await. Generates idiomatic C# with StringContent, FormUrlEncodedContent, or MultipartFormDataContent.
- Rust — reqwest
- Most popular Rust HTTP client. Generates async code with tokio runtime and proper error handling via Result.
- Swift — URLSession
- Apple Foundation framework URLSession. Generates async/await code compatible with iOS 15+ and macOS 12+.
In-Depth Technical Guides
All GuidesAutomating API Contract Testing: Converting OpenAPI 3.1 to Postman Collections
Transform OpenAPI (Swagger) specifications into executable Postman Collections (v2.1). Automate contract testing, generate mock servers, and streamline API integration.
Converting cURL Commands to Clean Node.js, Python, and Go HTTP Clients
Transform raw cURL commands and browser network exports into production-ready JavaScript Fetch, Axios, Python Requests/HTTPX, and Go net/http code.
Debugging CORS Errors: The Complete Guide to Preflight OPTIONS & Headers
A production debugging guide to fixing missing origin headers, failed preflight OPTIONS requests, credentialed CORS mismatches, and reverse-proxy proxy pass drops.
GraphQL Schema to TypeScript: Automated Type Generation, Operations & Codegen Guide
Generate end-to-end type safety across your GraphQL stack. Learn how to convert GraphQL SDL schemas and documents into typed queries, mutations, and resolver signatures.
Handling HTTP 429 Too Many Requests: Rate Limiting Headers, Exponential Backoff & Jitter
Diagnose and handle HTTP 429 status codes. Master IETF standard RateLimit and Retry-After headers, and implement production-grade exponential backoff with full jitter in Node.js, Python, and Go.
HAR File Analysis: How to Diagnose Slow API Endpoints & Network Bottlenecks
A practical guide to analyzing HTTP Archive (HAR) files, decoding network timing waterfalls, identifying high TTFB, and debugging slow REST and GraphQL APIs.
HTTP Cache-Control & CDN Caching: The Production Guide to stale-while-revalidate, ETags & Edge Invalidation
Master HTTP caching headers, understand browser vs CDN shared cache directives (s-maxage, stale-while-revalidate, immutable), and eliminate stale content and cache poisoning bugs.
HTTP Redirects Demystified: Debugging 301 vs 308, Chains, and Redirect Loops
Master HTTP 3xx status codes: 301 vs 308 permanent redirects, 302 vs 307 temporary redirects, fixing ERR_TOO_MANY_REDIRECTS loops, and optimizing redirect chains.
Server-Sent Events (SSE) vs WebSockets: Streaming Architecture for LLM & Real-Time APIs
Master unidirectional SSE vs bidirectional WebSockets for modern applications. Learn HTTP/2 multiplexing, automatic reconnection, Nginx proxy buffering gotchas, and token-by-token LLM streaming.
URL Encoding & Query Strings: Mastering RFC 3986, encodeURIComponent & URLSearchParams
Demystify percent-encoding rules, avoid double-encoding pitfalls, master + vs %20 space representations, and serialize complex nested objects and arrays for REST query strings.
Webhook Security & HMAC Signature Verification: Production Implementation Guide
Master webhook security: implement HMAC-SHA256 signature verification, prevent replay attacks with timestamp headers, avoid raw-body parser bugs, and secure asynchronous API callbacks.
Related Standards & RFC Specifications
All StandardscURL is a command-line tool and library (libcurl) for transferring data with URLs across HTTP, HTTPS, FTP, and dozens of network protocols.
HTTP headers are key-value metadata fields transmitted in HTTP requests and responses that govern caching, authentication, cookies, and security.
A webhook is an event-driven HTTP callback mechanism that sends real-time automated payloads between web systems when specific triggers occur.
Explore Full AI Model Pricing Directory
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Frequently Asked Questions
- Is this cURL converter free?
- Yes, DevFlow cURL to Code Converter is completely free with no usage limits. All parsing and code generation runs directly in your browser — no account required.
- Is my cURL command safe?
- All parsing happens entirely in your browser using pure JavaScript. No cURL commands, API keys, tokens, or any data is ever transmitted to a server. Your sensitive credentials stay completely private on your machine.
- What cURL flags are supported?
- The converter supports 22 commonly used cURL flags including -X (method), -H (headers), -d (body data), --data-raw, --data-binary, --data-urlencode, -F (multipart form), -u (basic auth), -b (cookies), -L (follow redirects), -k (insecure), --compressed, -o (output file), --connect-timeout, -m (max time), and --proxy.
- How do I convert a cURL command from Chrome DevTools?
- In Chrome DevTools, right-click a network request → Copy → Copy as cURL. Paste the copied command directly into this tool and select your target language. The converter handles the exact format Chrome exports, including all headers and cookies.
- Does it handle multipart file uploads?
- Yes. cURL commands using -F (or --form) flags for file uploads and form fields are parsed correctly. The generated code includes language-specific multipart/form-data handling — FormData in JavaScript, files parameter in Python requests, multipart/form-data in Go, etc.
- What if my cURL command has line continuations?
- Multi-line cURL commands using backslash (\) line continuations are fully supported. The parser joins continued lines before processing, so you can paste commands copied from documentation or scripts directly.
- Can I convert cURL commands exported from Postman?
- Yes. Postman's 'Copy as cURL' export format is fully compatible. Paste the exported command and convert to any language. This is a faster workflow than using Postman's built-in code generation because all processing happens instantly in your browser.
- Does the generated code handle authentication?
- Yes. Basic authentication via the -u flag is converted to language-specific auth patterns: Authorization header in fetch, auth parameter in Python requests, SetBasicAuth in Go, etc. Bearer tokens and custom Authorization headers set with -H are preserved in all generated code.
- Does it work offline?
- Yes. All parsing and code generation logic is bundled with the page as pure JavaScript. Once the page has loaded, the cURL to Code Converter works without an internet connection.
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