The C# QR Code Library

IronQR is the leading C# QR Code library for reading and creating QR codes in .NET. Its user friendly API allows developers to add Barcode functionality to .NET projects in minutes.

Generate & Read QR Codes on Desktop, Mobile, or Cloud
Custom Machine Learning Model reads any QR Code
Fully supports .NET 8, 7, 6, Core, Standard, Framework
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QR Quickstart

  
 
using IronQr;
using IronSoftware.Drawing;
// Create a QR Code object
QrCode myQr = QrWriter.Write("hello world");
// Save QR Code as a Bitmap
AnyBitmap qrImage = myQr.Save();
// Save QR Code Bitmap as File
qrImage.SaveAs("qr.png");
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A C# QR Code Library that prioritizes accuracy, ease of use, and speed.

When you need to read, write, and style QR codes, fast.

Cross Platform Support

Designed for C#, F#, & VB.NET running on .NET 8, 7, 6, Core, Standard, or Framework

For 1D Barcode & PDF support, try our IronBarcode Library

Key Compatibility

.NET Versions

  • C#, VB.NET, F#
  • .NET Core (8, 7, 6, 5, and 3.1+)
  • .NET Standard (2.0+)
  • .NET Framework (4.6.2+)

.NET Project Types

  • Web (Blazor & WebForms)
  • Mobile (Xamarin & MAUI)
  • Desktop (WPF & MAUI)
  • Console (App & Library)

App Environments

  • Windows (10+, Server 2016+)
  • Linux (Ubuntu, Debian, CentOS, etc.)
  • Apple macOS (10+)
  • Apple iOS (12+)
  • Android API 21+ (v5 “Lollipop”)
  • Docker (Windows, Linux, Azure)
  • Azure (VPS, WebApp, Function)
  • AWS (EC2, Lambda)

IDEs

  • Microsoft Visual Studio
  • JetBrains ReSharper & Rider

Reading QR Codes

Read Many Image Formats

  • Images (jpg, png, svg, bmp)
  • Multipage Images (gif, tif, tiff)
  • System.Drawing Bitmaps
  • IronDrawing Images (AnyBitmap)

Machine Learning Model

  • Custom QR Detection Model
  • Slim Mode option (non-ML)

Output Data Formats

  • Value (String)
  • Link or Website (Uri)
  • Coordinates (PointF)

Supports:

  • Async
  • Multithreading

Writing QR Codes

Write to Document Types

  • Image (jpg, png, gif, tiff, bmp)
  • System.Drawing Images
  • IronDrawing Images (AnyBitmap)
  • Stream (MemoryStream, byte[])
  • PDF (Stamp on Existing PDF)

Encoding Data in QR Code

  • Text, URLs, bytes, and numbers

Styling QR Codes

  • Resizing
  • Margins & Borders
  • Recoloring
  • Add Logos to QR Codes

Checking Fault Tolerance

  • Choose QR Version
  • Null Checking
  • Checksums
  • Format Awareness
  • Detailed Error Messages
  • Custom QR Error Correction