HTTP Request Code Generator – cURL, JavaScript, Python, Go, Rust
What is HTTP Request Code Generator?
Building HTTP requests for different programming languages can be tedious and error-prone. This tool lets you visually construct your API request - complete with headers, authentication, query parameters, and body content - then instantly generates production-ready code for your language of choice.
Whether you're testing a new API, documenting your endpoints, or just need a quick code snippet, this generator handles the boilerplate so you can focus on what matters.
How It Works
Simply fill in your request details using the form above, and watch as the code generates in real-time. Select from 9 different language/library combinations to get exactly the code you need.
Key Features:
- All HTTP Methods: GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS
- Dynamic Headers: Add as many custom headers as you need with enable/disable toggles
- Query Parameters: Build complex URLs with multiple query string parameters
- Multiple Body Types: JSON, Form Data, Raw text, and Binary support
- Authentication: Bearer Token, Basic Auth, and API Key (header or query)
- 9 Output Formats: cURL, JavaScript (fetch/axios), Python (requests/urllib), Java (HttpClient/OkHttp), Go, and Rust
- One-Click Copy: Copy generated code instantly to your clipboard
- Settings Persistence: Your preferences are saved to Local Storage
Supported Languages & Libraries
cURL (Bash)
Best for: Command-line testing, shell scripts, CI/CD pipelines
The universal HTTP client. Works on any Unix-like system and is perfect for quick API testing or automation scripts.
JavaScript - fetch
Best for: Browser applications, modern Node.js (18+), Deno
The native browser API for HTTP requests. No dependencies needed - it just works everywhere.
JavaScript - axios
Best for: Node.js backends, React/Vue apps, when you need interceptors
A battle-tested HTTP client with great error handling, automatic JSON parsing, and powerful features like request/response interceptors.
Python - requests
Best for: Scripts, data pipelines, backend services, API integrations
The de facto standard for HTTP in Python. Clean API, handles encoding automatically, and everyone already knows it.
Python - urllib
Best for: When you can't install external packages, standard library enthusiasts
Comes bundled with Python - no pip install required. More verbose but dependency-free.
Java - HttpClient
Best for: Java 11+ applications, when you want to avoid external dependencies
Built into modern Java. Async-capable with a fluent builder API.
Java - OkHttp
Best for: Android apps, high-performance Java backends
The go-to HTTP client for Android development. Efficient, reliable, and handles connection pooling automatically.
Go - net/http
Best for: Microservices, CLI tools, high-concurrency applications
Go's standard library HTTP client. Lightweight, fast, and sufficient for most use cases.
Rust - reqwest
Best for: Systems programming, when performance and safety matter
The most popular HTTP client in the Rust ecosystem. Async by default, with great ergonomics.
Common Use Cases
1. API Documentation
Generate code samples for your API docs. Instead of manually writing examples for each language, build the request once and export code for all supported languages.
2. Quick API Testing
Need to test an endpoint but don't want to open Postman? Build your request here, copy the cURL command, and run it straight from your terminal.
3. Integration Development
When integrating with a third-party API, generate starter code in your language. The generated code handles headers, auth, and body formatting correctly - just plug in your values.
4. Learning & Teaching
See how the same HTTP request looks across different languages. Great for understanding HTTP fundamentals or learning a new language's HTTP client.
FAQ
Q: Does this tool actually send HTTP requests?
A: No - this is purely a code generator. It creates the code for you to run in your own environment. No requests are made from this page.
Q: Is my data safe?
A: Absolutely. Everything happens locally in your browser. URLs, headers, tokens - none of it ever leaves your machine or gets sent to any server.
Q: Why would I use this instead of Postman?
A: When you just need quick code snippets, this is faster and lighter. No account needed, works in any browser, and generates code for 9 different languages instantly.
Q: Can I add multiple values for the same header?
A: Yes! Just add multiple header rows with the same key name. The generated code will include all of them.
Q: The generated code doesn't work. What's wrong?
A: Double-check your URL, headers, and body format. The generator assumes valid input. Also make sure you have the required libraries installed (axios, requests, etc.).
Tips for Better Results
- Use the enable/disable toggles to quickly test with different header combinations without deleting them
- For JSON bodies, make sure your JSON is valid - the generator doesn't validate it
- API keys in query params are automatically URL-encoded, so special characters are handled correctly
- When using Basic Auth, the credentials are Base64-encoded automatically in the generated code
- The generated code is a starting point - you may want to add error handling or customize it for your specific use case
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Request
Headers
Query Parameters
Request Body
Authentication
// Enter a URL to generate code