Merge PDF files

We will show you how to combine multiple PDF files into one file using a desktop app called tmmMergePDF.

tmmMergePDF can be installed for free from the Microsoft Store. It does not display advertisements.

tmmMergePDF is a very simple Windows desktop app written in C#.

It was made for Windows 11 or 10, but it should work on earlier versions of Windows as long as .Net Framework 4.7.2 is supported.

When you start tmmMergePDF, you will see a text box for specifying the PDF file to save and a list box for specifying the PDFs to merge.

①Enter the full path of the file to save, or open a file selection dialog to specify the file to save to.

②Click the plus button to select the PDF files you want to merge. You can select multiple files at once. You can also drag and drop PDF files from Explorer.

Once you select an input file, you can delete it with ③, move it up with ④, or move it down with ⑤.
The display order here will be the page order when the PDFs are combined.

Click ⑥ to start the combining process.

A progress bar will be displayed during execution.
When complete, the specified file will be created as the output file.

Above, we have introduced how to merge PDF files using tmmMergePDF.
We hope this is helpful to you.

About tmmMergePDF
　Tools used: Microsoft Visial Studio 2019
　Programming Language: C# (.NET Framework 4.7.2)
　Author: tomomori & DDS
　This software uses the following libraries:
　PDFsharp
　　https://docs.pdfsharp.net/
　　License: MIT ( https://opensource.org/license/mit )
　　Install: NuGet