cURL to Swift & URLSession Converter

Convert cURL commands into clean, type-safe Swift code using modern URLSession async/await concurrency, classic completion closures, or Alamofire.

At a glance

cURL to Swift Converter is a free browser tool that converts cURL commands to modern Swift code with URLSession async/await, closures, and Alamofire. It automatically formats Bearer tokens and Base64 encodes Basic Authentication credentials. It also generates URLSession async/await code with Task and try await data(for: request). All processing is local: nothing is uploaded, and no account is required.

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100% Client-Side In-Browser cURL to Swift Converter

Convert cURL commands to modern Swift code with URLSession async/await, URLSession closures, or Alamofire. 100% private in browser memory.

Local & Private Instant Conversion
Mode:
cURL Command 0 chars
1
Ready
Method: POST Headers: 0
Swift Code Output URLSession (async/await)
1 
// Generating Swift code...
Swift 5.9+ / iOS 15+ / macOS 12+
0 lines
iOS & Swift Setup
Package.swift / Xcode
// URLSession is built directly into Foundation! Zero external dependencies needed.
import Foundation

Modern Swift Concurrency

Embrace clean async/await syntax with URLSession.shared.data(for:). Eliminates pyramid-of-doom nested completion handler closures in modern iOS apps.

Alamofire Integration

Instantly convert commands into AF.request() calls with parameter dictionaries, JSONEncoding, HTTPHeaders, and response handler chaining.

100% Client-Side Privacy

Zero backend servers or telemetry. All cURL tokenization, header parsing, and Swift compilation execute strictly within local browser memory at $0.00 marginal cost.

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Why Use This cURL to Swift Converter?

Modern Swift Concurrency: Generates URLSession async/await code with Task and try await data(for: request).
URLSession Closures Alternative: Classic dataTask completion handler syntax backward compatible with older iOS versions.
Alamofire Support: Generate AF.request calls with parameter dictionaries, JSONEncoding, and response chaining.
Authentication Handling: Automatically formats Bearer tokens and Base64 encodes Basic Authentication credentials.
Smart Body Detection: Formats multi-line JSON string bodies with .utf8 encoding or Alamofire parameter dictionaries.
100% In-Browser Privacy: All command parsing and Swift compilation execute strictly in local browser memory.

How to Use cURL to Swift Converter

1

Paste Your cURL Command

Paste your cURL command into the input editor or choose one of the preset samples.

2

Select Swift Networking Mode

Choose between URLSession (async/await), URLSession (Closures), or Alamofire.

3

Copy or Download Swift Code

Click 'Copy' to copy the generated Swift script or download it as an APIRequest.swift file.

Worked example: cURL to Swift Converter

Executed entirely inside your local browser memory using modern Web APIs. The engine verifies input syntax, performs deterministic transformation, and exposes instant copy or download options.

Sample CURL Data Source 
sample_payload.curl (Valid format conforming to CURL specification)
Resulting SWIFT Output Processed 
converted_result.swift (100% client-side)

Technical Specifications & Engine Details

Technical specifications and engine details for cURL to Swift Converter
Specification Details
Supported Formats CURL, TEXT, SH → SWIFT, TEXT
Execution Mode 100% Client-Side In-Browser (client)
Browser Requirements Requires modern web browser with ECMAScript 6+ and standard DOM Web APIs.
Performance Constraints Client browser memory limit (typically 1–2 GB RAM); processing speed depends on local device CPU.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

All cURL command parsing and Swift code generation run 100% locally in your browser memory. Your URLs, headers, and credentials never leave your machine.

Frequently Asked Questions

How does this tool convert cURL to Swift code?
It tokenizes your cURL command, parses HTTP method, headers, auth, cookies, and data, and generates production-ready Swift scripts using URLSession or Alamofire.
Does it support modern Swift async/await concurrency?
Yes! Modern URLSession mode uses async throws and URLSession.shared.data(for: request) introduced in Swift 5.5 and iOS 15.
Can I use the generated code in Xcode for iOS and macOS apps?
Yes! You can copy the code directly into your Xcode project services, ViewModels, or Swift scripts.
How does it handle Basic Auth (-u) in Swift?
It encodes credentials into Base64 using Data("user:pass".utf8).base64EncodedString() and sets the Authorization header.

Methodology

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Last updated .

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