How to Convert QR Code to PDF

How to Convert QR Code to PDF

1. Install C# QR code and PDF library to create and convert QR Code to PDF.
2. Generate a simple QR object using QrWriter.Write method from IronQR.
3. Save the QR Code object as a Bitmap.
4. Save the QR Code Bitmap as a File using SaveAs method.
5. Set the QR code image path in a variable.
6. Use File.Exists method to check if a QR code Image exists before converting.
7. Utilize ImageToPdfConverter.ImageToPdf method from IronPDF to load the Image and convert it to a PDF object.
8. Save the PDF using SaveAs method.

Introduction to IronQR

IronQR is an easy-to-use C# library by Iron Software that allows developers to generate static QR codes, style, and read QR codes in .NET applications. Its simplicity and robust features make it an ideal tool for integrating QR code functionality into desktop, web, and mobile apps. One of its key strengths is the ability to handle QR codes across a wide range of platforms, including Windows, Linux, macOS, Android, iOS, and cloud environments like Azure and AWS.

The IronQR library provides a robust solution for generating QR codes, allowing developers to create static and dynamic QR codes for various applications easily. With its advanced features, IronQR facilitates reading QR codes and integrates seamlessly with PDF documents, enabling users to generate, print, and embed QR codes directly into their PDFs.

Create a Visual Studio Project

To begin, let's create a new project in Visual Studio:

1. Open Visual Studio and click on Create a new project.

   

2. Select Console App (.NET C#) project type.

   

3. Choose a name for your project (e.g., QRCodeToPDF) and set the location where it should be saved.

   

4. In Additional Information, select the latest version of .NET Framework. IronPDF supports the latest version of .NET.

   

5. Click Create.

Install IronQR and IronPDF Library via NuGet Package Manager

To work with IronQR and IronPDF, you need to download and install the packages using the NuGet Package Manager:

1. In Microsoft Visual Studio, right-click on your project in the Solution Explorer.
2. Select Manage NuGet Packages.

3. In the Browse tab, search for IronQR.

   

4. Select the package from the list and click Install.
5. Accept the license terms to complete the installation.

6. Similarly, search for IronPDF and install it.

   

Generate a QR Code using IronQR Library

using IronQr; // IronQR namespace
using IronSoftware.Drawing; // For working with general image formats

// Set your License Key for IronQR
License.LicenseKey = "YOUR-LICENSE-KEY-HERE";

// Create a QR Code object with the specified text
QrCode myQr = QrWriter.Write("hello world");

// Save QR Code as a Bitmap object
AnyBitmap qrImage = myQr.Save();

// Save QR Code Bitmap as a File with specified format
qrImage.SaveAs("qr.png");

using IronQr; // IronQR namespace
using IronSoftware.Drawing; // For working with general image formats

// Set your License Key for IronQR
License.LicenseKey = "YOUR-LICENSE-KEY-HERE";

// Create a QR Code object with the specified text
QrCode myQr = QrWriter.Write("hello world");

// Save QR Code as a Bitmap object
AnyBitmap qrImage = myQr.Save();

// Save QR Code Bitmap as a File with specified format
qrImage.SaveAs("qr.png");

Introduction to IronPDF

IronPDF is a robust .NET C# library from Iron Software that easily creates, manipulates, and converts PDF documents in .NET applications. With IronPDF, developers can easily embed images (including QR codes) into a PDF document template, making it perfect for tasks like converting QR code images into a document-ready PDF.

IronPDF provides HTML to PDF conversion, which allows developers to directly embed QR code images in an HTML template and then generate PDF documents seamlessly. The embedded QR code formatting is preserved in the document, allowing error-free scanning of the QR codes.

Convert the QR Code Image to a PDF File

Now, with everything set up perfectly, the following code example will help you convert a QR code image to a PDF using IronPDF:

using IronPdf; // IronPDF namespace
using System.IO; // For File operations

// Set your License Key for IronPDF
License.LicenseKey = "YOUR-LICENSE-KEY-HERE";

// Define the file path for the QR code image
var qrImagePath = "assets/sample_qr_code.png";

// Ensure that the image file exists before proceeding
if (File.Exists(qrImagePath))
{
    // Convert the image to a PDF and save it
    ImageToPdfConverter.ImageToPdf(new[] { qrImagePath }).SaveAs("QRCodeImageToPDF.pdf");
    Console.WriteLine("QR Code image has been successfully converted to a PDF.");
}
else
{
    Console.WriteLine("QR Code image not found. Please check the file path.");
}

using IronPdf; // IronPDF namespace
using System.IO; // For File operations

// Set your License Key for IronPDF
License.LicenseKey = "YOUR-LICENSE-KEY-HERE";

// Define the file path for the QR code image
var qrImagePath = "assets/sample_qr_code.png";

// Ensure that the image file exists before proceeding
if (File.Exists(qrImagePath))
{
    // Convert the image to a PDF and save it
    ImageToPdfConverter.ImageToPdf(new[] { qrImagePath }).SaveAs("QRCodeImageToPDF.pdf");
    Console.WriteLine("QR Code image has been successfully converted to a PDF.");
}
else
{
    Console.WriteLine("QR Code image not found. Please check the file path.");
}

Run the Application

Now that the code is in place, it's time to run the application and see the conversion in action. Follow these steps:

1. Ensure that the QR code image (sample_qr_code.jpg) is correctly placed in the specified folder (e.g., the assets folder).
2. Build and run the project in Visual Studio by pressing F5 or clicking Start.
3. The application will convert the QR code image into a PDF if the image exists at the specified location.
4. The generated PDF will be saved in the root of your project directory with the filename QRCodeImageToPDF.pdf.
5. Check the PDF file to ensure the QR code image has been successfully embedded.

You should now have a PDF containing your QR code image, which can be shared, printed, or archived. Here is the output PDF with the QR code image we used:

Conclusion

Using IronQR and IronPDF, creating and converting a QR code image to a PDF is simple and efficient. By following the steps outlined above, you can easily create a QR code image, convert it, and save it as a PDF in just a few lines of code. Whether for business or personal use, this approach ensures that your QR code is document-ready in PDF format and can be shared over the internet without any data or pixel loss.

IronPDF provides a free trial so you can explore its features and capabilities for yourself. For those ready to unlock the full potential of the library, licenses start at $799, offering comprehensive access to all functionalities. Don't miss the opportunity to enhance your PDF generation—try IronPDF today by downloading it!