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.NETStandard2.0

IronQR.Slim - The lightweight package for writing and reading QR codes.

Published
Feb 10, 2026
8mo ago
Total Downloads
66.0K
66,009

Install

dotnet add package IronQR.Slim --version 2026.1.2
ProductVersions
.NET Standard
netstandard2.0

README

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IronQR - The C# QR Code Library

Effortlessly generate, scan, and customize QR Codes in your .NET applications

IronQR NuGet Trial Banner Image

IronQR is a library developed and maintained by Iron Software that helps C# Software Engineers to detect, read, and create QR Codes in .NET applications & websites with a sophisticated custom Machine Learning model.

Get Started in 3 Steps

1. Install the NuGet Package

PM> Install-Package IronQR

2. Create Your First QR Code

using IronQr;
using IronSoftware.Drawing;

// Create QR Code
QrCode myQr = QrWriter.Write("hello world"); // Embedded value as string
AnyBitmap qrBitmap = myQr.Save(); // Bitmap object able to export as bytes or file
qrBitmap.SaveAs("qr.png"); // Save to disk

// Read QR Code
var qrReader = new QrReader(settings: optionalQrReaderSettings); // Create reader
IEnumerable<QrResult> results = qrReader.Read(new QrImageInput("image.jpg")); // Reader calls ML Model to detect and read
IEnumerable<QrResult> asyncResults = await qrReader.ReadAsync(new QrImageInput("image.jpg")); // Async version

// Advanced QR Creation
var optionalOptions = new QrOptions(QrErrorCorrectionLevel.High, 20); // Advanced QR Generation Options

QrCode myQr = QrWriter.Write("hello world", options: optionalOptions); // QR code created with options

var fancyBrandedQrSettings = new QrStyleOptions // Add logo, branding, coloring, rouding, etc.
{
    Dimensions = 300, // px
    Margins = 10, // px
    Color = Color.Black,
    Logo = new QrLogo
    {
        Bitmap = new AnyBitmap(new Uri("website.com/image.svg")),
        Width = 50,
        Height = 50,
        CornerRadius = 2
    }
};
AnyBitmap qrWithBranding = myQr.Save(fancyBrandedQrSettings);
qrWithBranding.SaveAs("qr_fancy.png");

3. Explore More

Dive deeper with our extensive documentation and examples:

  • Tutorials: Step-by-step guides to help you create your first QR Code application.

  • Code Examples: Concise set of code that can be easily executable.

  • How-To Guides: Practical, goal-oriented instructions to solve specific problems.

  • Demo: Detailed technical descriptions of the API and its components.

  • API Reference: Demonstrating guides that showcase how IronQR works the way it does.

Key Features

  • Read QR Code: Reliably scan and decode QR codes from images and PDFs, including those of poor quality.

  • Generate QR Code: Create and customize QR codes with full control over size, color, and logo, and export them to images.

  • QR Code Types: Comprehensive support for standard QR code formats including QR Code, Micro QR Code, RMQRCode, for both reading and writing.

  • Supported Applications: Perfect for a wide range of applications and integrations including desktop, web, and mobile apps.

Compatibility

IronQR is built for modern .NET and supports a wide range of project types and operating systems.

  • Platforms: .NET 10, .NET 9, .NET 8, .NET 7, .NET 6, .NET 5, Core 2x & 3x, Standard 2

  • Framework: .NET Framework 4.6.2 (and above)

  • App Models: Console, Web, and Desktop Apps

  • Operating Systems: Windows, macOS, Linux (Debian, CentOS, Ubuntu), iOS, Android

  • Cloud & Containerization Platforms: Azure, AWS, Docker

  • IDEs: Microsoft Visual Studio or Jetbrains ReSharper & Rider

IronQr Cross Platform Compatibility Support Image

License

IronQR is a commercially licensed product.

  • Trial License: Get a free developer key to evaluate the full library with no commitment. Ideal for development and testing purposes. Start your trial HERE.

  • Purchase a License: Unlock the library for use in commercial projects and get access to our full technical support. Purchase your license HERE.

Getting Help & Support

Have a question or running into an issue?

Changes from Previous Version

No structural changes between v2026.1.1 and v2026.1.2.

Adoption Assessment

Assess this package against its supported frameworks, license, maintenance signals and dependency graph before making it a project standard.

No SPDX license expression is published. Review the license text and your organisation's policy before redistribution.Compatibility metadata lists 1 target framework; confirm the exact target used by your application.

Related Guides & Workflows

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