How to Merge PDF Files in VB.NET
This tutorial demonstrates how to merge PDF files in VB.NET.
How to Merge PDF Files in VB.NET
- Download the C# library required for merging PDF files
- Load existing PDFs from files or render from HTML
- Use the
Merge
method to combine the PDFs - Save the merged PDF using the
SaveAs
method in VB.NET - Check the output PDF document
IronPDF Features
IronPDF is a powerful PDF SDK foundation for PDF processing, making it simple for developers to produce, read, and edit PDF documents quickly. The IronPDF library converts HTML to PDF by using the Chrome engine. Xamarin, Blazor, Unity, HoloLens applications, Windows Forms, HTML, ASPX, Razor HTML, .NET Core, ASP.NET, and WPF are just a few of the many web components that the library supports. Both conventional Windows Applications and ASP.NET Web Applications can make use of Microsoft .NET and .NET Core programming.
IronPDF allows you to build PDFs that are visually appealing and contain a title and footer by utilizing HTML5, JavaScript, CSS, and pictures. Along with a powerful HTML-to-PDF converter that works with PDF files, the API library also has a standalone PDF conversion engine that is not dependent on any external resources.
- The IronPDF library allows users to create PDFs from a variety of inputs, including image files, HTML, HTML5, ASPX, and Razor/MVC View.
- Tools that can be used to work with interactive PDFs include filling out and submitting interactive forms.
- Merge and divide PDFs, extract text and pictures from PDF files, search text in PDF files, rasterize PDFs to images, change font size and convert PDF files.
- The library also offers the usage of user agents, proxies, cookies, HTTP headers, and form variables for authentication behind HTML login forms, as well as links as the foundation for PDF publications.
- Password-protected PDF files can be accessed with IronPDF in exchange for usernames and passwords.
- Using the IronPDF API, existing PDF files may be read and edited.
- The library can extract images from PDF files in addition to adding text, graphics, bookmarks, watermarks, headers, and footers to PDF files.
- Users can split and combine pages in a new or old PDF document. Without having an Acrobat Reader, IronPDF can also create PDF objects from text.
- From CSS files and CSS media files, PDF documents can be produced.
To know more about the Merge PDF files using IronPDF, refer to the merge PDF files example.
Creating a .NET Core 6 Project
The examples in the parts that follow in this newsletter show how simple the IronPDF library is to use.
Creating a new project to merge PDF files is the first step.
Choose "New Project" from the "File" menu when Visual Studio is open.
Select the "Console App" template in the ensuing dialogue box, then click "Next".
Create a new project in Visual Studio
Enter any project name you pick in the Project name box, and the new project's location in the Location field. To continue, click the Next button.
Configure your new project
From the Framework drop-down menu, pick a .NET Framework. In this case, we're utilizing the long-supported version of .NET, 6.0. Next, click on Create.
.NET Framework selection
Next, download the solution's necessary IronPDF library. Use the following code on the package manager to accomplish this:
Install-Package IronPdf
As an alternative, the NuGet Package Manager can be used to look for the IronPdf
package.
Search for IronPDF in NuGet Package Manager UI
A "Save As" dialogue box that enables saving the created IronPDF to the chosen location has been added to this application.
Merge PDF files
You can utilize IronPDF to deal effectively with numerous or huge PDF files. When processing the documents, you can use less RAM thanks to the characteristics of lazy loading and incremental update built-in features. It is possible to merge multiple PDF documents into a single PDF file with a few lines of code.
Below is the sample code to merge multiple PDF files.
Imports System
Imports IronPdf
Module Program
Sub Main(args As String())
' Declare PdfDocument objects for the PDF files to be merged
Dim firstPDF, secondPDF, MergedPDF As PdfDocument
' Load existing PDF files into PdfDocument objects
firstPDF = PdfDocument.FromFile("A.pdf")
secondPDF = PdfDocument.FromFile("B.pdf")
' Merge the loaded PDF documents into a single PdfDocument
MergedPDF = PdfDocument.Merge(firstPDF, secondPDF)
' Save the merged PDF document to the specified file path
MergedPDF.SaveAs("MergeDoc.pdf")
End Sub
End Module
Imports System
Imports IronPdf
Module Program
Sub Main(args As String())
' Declare PdfDocument objects for the PDF files to be merged
Dim firstPDF, secondPDF, MergedPDF As PdfDocument
' Load existing PDF files into PdfDocument objects
firstPDF = PdfDocument.FromFile("A.pdf")
secondPDF = PdfDocument.FromFile("B.pdf")
' Merge the loaded PDF documents into a single PdfDocument
MergedPDF = PdfDocument.Merge(firstPDF, secondPDF)
' Save the merged PDF document to the specified file path
MergedPDF.SaveAs("MergeDoc.pdf")
End Sub
End Module
The above code snippet shows how to merge PDF documents using IronPDF. First, load two PDF files A.pdf
and B.pdf
to create a local variable for the PdfDocument
object by using the FromFile
function. IronPDF provides a separate function called Merge
which helps to pass multiple PDF document objects as parameters to merge PDFs. After passing all the objects into the merge function, another function called SaveAs
is used to save the combined PDF files into one PDF file.
The content of two PDF files
The above image shows the two input PDF files. The output PDF file will be linked below.
OUTPUT PDF FILE
The output file
The above images show that the function combines the first and second PDF files that are saved into a PDF file. Likewise, it can merge multiple PDF files. IronPDF can perform this process in a few milliseconds with few lines of code.
Conclusion
IronPDF is straightforward to use, and with just a few lines of code, it can produce PDF files. It is appropriate for beginners, and using this application requires only rudimentary expertise. There is no reliance between IronPDF and any other package. For instance, it is solely a single-package library.
In addition to the free license that is offered, developers have the option of purchasing a range of licenses to meet their needs. All library features, such as a perpetual license, a 30-day money-back guarantee, a year of software support, upgrades, and potential for SaaS and OEM redistribution, are not included in the $749 Lite edition.
It also does not include ongoing costs. These licenses are one-time investments that can be used for production, staging, and development. Additionally, IronPDF offers time-limited, non-distributable free licenses. For complete pricing and licensing information about IronPDF, kindly go to the licensing page.
Frequently Asked Questions
How do I merge PDF files in VB.NET?
You can merge PDF files in VB.NET using IronPDF by loading the PDFs with PdfDocument
objects, applying the Merge
method, and saving the result with the SaveAs
method.
What is the advantage of using IronPDF for merging PDFs?
IronPDF simplifies the merging process with a few lines of code and ensures that the formatting is preserved. It also supports various inputs like HTML, images, and more, enhancing the visual quality of PDFs.
How can I load existing PDF files in VB.NET for merging?
In VB.NET, you can load existing PDF files for merging by using IronPDF's PdfDocument
class to open and manipulate the files before merging them with the Merge
method.
Can IronPDF process password-protected PDF files?
Yes, IronPDF can handle password-protected PDF files by allowing you to provide the required credentials for access during processing.
Is IronPDF compatible with .NET Core?
Yes, IronPDF is compatible with .NET Core as well as other platforms like Xamarin, Blazor, and Windows Forms, making it versatile for different development environments.
How do I save a merged PDF document in VB.NET?
Once you have merged PDF files using IronPDF, you can save the combined document to a desired location using the SaveAs
method, specifying the file path.
Do I need external resources to use IronPDF?
No, IronPDF operates as a standalone library with its own PDF conversion engine, which means it does not depend on any external resources or packages.
What type of licensing options does IronPDF offer?
IronPDF offers a variety of licensing options including a free license and paid licenses that provide extra features such as perpetual use and software support.