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USING IRONPDF

C# Convert PNG to PDF (Code Example Tutorial)

This article will guide you on how to convert PNG to PDF using the IronPDF image conversion API in C#.

Topics Covered in the Tutorial

In this tutorial, the following topics will be covered:

  1. Introduction to the IronPDF Library
  2. Create a C# Project
  3. Install the IronPDF Library
    • Method 1: NuGet Package Manager Solution
    • Method 2: NuGet Package Manager Console
    • Method 3: Using the DLL file
  4. Add the IronPDF Namespace
  5. Convert JPG Images to PDF Documents
  6. Summary

Requirements when using IronPDF:

  • You should have basic knowledge of C# languages.
  • You should have a basic knowledge of Windows Applications.

1. Introduction to the IronPDF Library

The IronPDF .NET PDF Library solution is a dream for developers, particularly software engineers who use C#. Using this excellent Iron Software tool, you can easily create a core PDF library for .NET. IronPDF will ensure any PDF conversion from different formats is an effortless and time-saving process.

It also enables you to construct a PDF file using HTML5, JavaScript, CSS, and images. You can seamlessly edit, stamp, and add headers and footers to a PDF. Furthermore, it makes it very easy to read PDF text, extract images, or convert images to PDF programmatically.

Some of the important features include:

Here, this tutorial focuses on the conversion of PNG files to PDF documents. IronPDF supports almost every image format for conversion. Supported image formats are JPG, PNG, GIF, TIFF, SVG, and BMP.

2. Create a C# Project

This tutorial will use the latest version of Visual Studio and C# programming language to build the project. As the example code is derived from C# 10.0, you should have some knowledge concerning top-level statements.

Let's begin by creating a C# project.

  • Open Visual Studio.
  • Either create a new C# project or open an existing one.
  • Give a name to the project.
  • Select .NET Core >= 3.1 as 3.1 is supported and works on every device. The latest and most stable version of the .NET Framework is 6.0.

C# Convert PNG to PDF (Code Example Tutorial), Figure 1: Console Program after Creating Project Console program after creating project

3. Install the IronPDF Library

Method 1: NuGet Package Manager Solution

C# Convert PNG to PDF (Code Example Tutorial), Figure 2: Open from Solution Explorer Open from Solution Explorer

Once the NuGet Package Manager Solution is open, browse for the IronPDF library to convert a PNG image to a PDF file. Then click on install.

C# Convert PNG to PDF (Code Example Tutorial), Figure 3: Browse IronPDF Browse IronPDF

Method 2: NuGet Package Manager Console

Using the NuGet Package Manager Console will allow you to install the library effortlessly. Administrative privilege is not required to install the library. A NuGet command will be used to install the IronPDF library in your project. Just utilize the following command to proceed.

Install-Package IronPdf

Method 3: Using DLL File

You can directly download the IronPDF .DLL file from the website. It can be instantly downloaded from the IronPDF official DLL download link.

To reference the library in your project, follow these directions:

  • Right-click the Solution in the Solution Explorer
  • Select "References"
  • Browse for the IronPDF.dll library
  • Click OK

All done! IronPDF is downloaded, installed, and ready to use to convert PNG to PDF format.

4. Add the IronPDF Namespace

Now add the IronPDF namespace to your program. You have to add a given line of code at the top of the file.

using IronPdf;
using IronPdf;
Imports IronPdf
$vbLabelText   $csharpLabel

This will allow you to access all of the functions provided by IronPDF. This line of code must be added to every file where you wish to use the IronPDF features.

5. Convert PNG to PDF format

Converting PNG files to PDF documents is very easy with IronPDF. Only one line of code can achieve this task using the IronPDF's ImageToPdf method. Inside the directory of the project, place the PNG images to be converted inside a folder named assets. The folder must be placed in the location: bin\Debug\net6.0. Then, using System.IO.Directory, enumerate the assets folder with all the PNG files and pass it to the ImageToPdf method for the conversion operation stream. The following code example helps you convert a PNG image to a PDF document and save a Stream object to the disk.

using IronPdf;
using System;
using System.IO;
using System.Linq;

public class Program
{
    public static void Main()
    {
        Console.WriteLine("C# Convert PNG to PDF using IronPDF");

        // Directory is set to the assets folder. Filters for files ending with '.png' or '.PNG'.
        var images = Directory.EnumerateFiles("assets").Where(f => f.ToLower().EndsWith(".png"));

        // Converts the images to a PDF and saves them.
        if (images.Any())
        {
            ImageToPdfConverter.ImageToPdf(images).SaveAs("composite.pdf");
            Console.WriteLine("PNG successfully converted to PDF");
        }
        else
        {
            Console.WriteLine("No PNG files found.");
        }
    }
}
using IronPdf;
using System;
using System.IO;
using System.Linq;

public class Program
{
    public static void Main()
    {
        Console.WriteLine("C# Convert PNG to PDF using IronPDF");

        // Directory is set to the assets folder. Filters for files ending with '.png' or '.PNG'.
        var images = Directory.EnumerateFiles("assets").Where(f => f.ToLower().EndsWith(".png"));

        // Converts the images to a PDF and saves them.
        if (images.Any())
        {
            ImageToPdfConverter.ImageToPdf(images).SaveAs("composite.pdf");
            Console.WriteLine("PNG successfully converted to PDF");
        }
        else
        {
            Console.WriteLine("No PNG files found.");
        }
    }
}
Imports IronPdf
Imports System
Imports System.IO
Imports System.Linq

Public Class Program
	Public Shared Sub Main()
		Console.WriteLine("C# Convert PNG to PDF using IronPDF")

		' Directory is set to the assets folder. Filters for files ending with '.png' or '.PNG'.
		Dim images = Directory.EnumerateFiles("assets").Where(Function(f) f.ToLower().EndsWith(".png"))

		' Converts the images to a PDF and saves them.
		If images.Any() Then
			ImageToPdfConverter.ImageToPdf(images).SaveAs("composite.pdf")
			Console.WriteLine("PNG successfully converted to PDF")
		Else
			Console.WriteLine("No PNG files found.")
		End If
	End Sub
End Class
$vbLabelText   $csharpLabel

In the above code snippet, the asset folder contains only one PNG file. The output file looks like this:

C# Convert PNG to PDF (Code Example Tutorial), Figure 4: Single JPG file to PDF file Single JPG file to PDF file

The same code example can be used to convert multiple PNG images. The output file formats contain three PNG-to-PDF documents.

C# Convert PNG to PDF (Code Example Tutorial), Figure 5: Multiple PNG Images to PDF Document Multiple PNG images to PDF document

6. Summary

This tutorial shows how to convert a PNG image to a PDF document using the IronPDF C# library. The manipulation and configuration of PDF files become remarkably effortless with the IronPDF library function. All that is needed is just a few lines of code to construct a PDF document from PNG files. Whether it's to convert JPG images, PNG images, or numerous other formats, IronPDF is ideal for developers and companies.

Utilize the free version to test it out! Additionally, with a free trial key, you can test the functionality of IronPDF. Furthermore, the current special offer allows you to get five products from IronPDF for the price of just two! Visit this IronPDF licensing information page for more information about licensing.

Frequently Asked Questions

How can I convert PNG images to PDF using C#?

You can use IronPDF's ImageToPdf method to easily convert PNG images to PDF in C#. This method allows you to convert a single image or multiple images into a single PDF document with minimal code.

What are the steps to set up IronPDF in a C# project?

To set up IronPDF in a C# project, you can install it via the NuGet Package Manager in Visual Studio, use the NuGet Package Manager Console with the command Install-Package IronPdf, or download the DLL file and add it directly to your project references.

Can I convert other file formats to PDF using this library?

Yes, IronPDF can convert various file formats including HTML, JavaScript, CSS, and images like JPG, GIF, TIFF, SVG, and BMP to PDF documents.

What prerequisites are needed for converting images to PDF in C#?

You should have a basic understanding of C# programming and familiarity with using Visual Studio and .NET applications to effectively utilize IronPDF for image to PDF conversion.

How do I include IronPDF in my C# code for image conversion?

Include the namespace using IronPdf; at the beginning of your C# file to access all the necessary functions provided by IronPDF.

Is it possible to convert multiple PNG images into a single PDF?

Yes, using IronPDF, you can convert multiple PNG images into a single PDF document by using the ImageToPdf method.

What are the recommended development tools for working with IronPDF?

It is recommended to use the latest version of Visual Studio with .NET Core version 3.1 or higher for optimal compatibility and performance when working with IronPDF.

Can I evaluate IronPDF before purchasing?

Yes, you can try IronPDF using its free version and a trial key, allowing you to evaluate its features and functionality before making a purchase decision.

How can I troubleshoot issues when converting images to PDF using IronPDF?

Ensure that you have included the correct namespaces and references in your project. Check for any errors in your code syntax and verify that your .NET framework is compatible with IronPDF. For additional support, consult the IronPDF documentation or community forums.

Chipego
Software Engineer
Chipego has a natural skill for listening that helps him to comprehend customer issues, and offer intelligent solutions. He joined the Iron Software team in 2023, after studying a Bachelor of Science in Information Technology. IronPDF and IronOCR are the two products Chipego has been focusing on, but his knowledge of ...Read More