The C# QR Code Library

QR Quickstart See All 6 Code Examples

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");

Install-Package IronQR

Explore the code, install IronQR with NuGet

PM > Install-Package IronQR

IronQR

Nuget

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Address security vulnerabilities

Cross Platform Support

Designed for C#, F#, & VB.NET running on .NET 9, 8, 7, 6, Core, Standard, or Framework
For 1D Barcode & PDF support, try our IronBarcode Library

The C# QR Code Library

A C# QR Code Library that prioritizes accuracy, ease of use, and speed.

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

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

IronQR Release Version 2025.4

Features & Upgrades

Compatibility

.NET Versions

C#, VB.NET, F#
.NET Core (9, 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)

Supported Types:

Standard QR code
Micro QR Code
Rectangular Micro QR Code

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

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