Merging PDF Files

Tony Tannous

Dec 14, 2019·2 min read

This article discusses some of the free methods/tools for merging of PDF files.

PDFsam

For GUI based fans, PDFsam is a good choice with an intuitive interface.

As of now, there are 3 different versions available for download and they are Trial, Pro and Education. The Trial allows for 14 days of free usage with all capabilities enabled. After the 14 day trial, the Merge feature will still continue to function.

MergePdf

MergePdf Powershell module, written by Sergey Pavlyukovich, utilises the PDFsharp .NET open source library for merging of multiple PDFs.

The module can be installed using Powershell.

Installation

By default, the Powershell package repository is set as “untrusted”.

PS C:\> Get-PSRepository

To trust this repo, run:

PS C:\> Set-PSRepository -Name PSGallery -InstallationPolicy Trusted

Install the module using:

PS C:\> Install-Module -Name MergePdf

Syntax and Usage Examples

Syntax details can be found using:

PS C:\> Get-Help Merge-Pdf

Examples of command invocations can be obtained by running:

PS C:\> Get-Help Merge-Pdf -examples

Example 1
Gets all .PDF files in current location and merges them into .\Merged.pdf

PS C:\>Merge-Pdf

Example 2
Appends in.pdf to out.pdf

PS C:\>Merge-Pdf -OutputPath c:\output\out.pdf `
 -Path c:\input\in.pdf -Append

Example 3
Merges all .PDF files in current location into c:\out\out.pdf

PS C:\>Merge-Pdf -OutputPath c:\out\out.pdf

Example 4
Merges all .PDF files in folder c:\input into c:\output\out.pdf

PS C:\>Merge-Pdf -Path c:\input\ -OutputPath c:\output\out.pdf

Example5
Merges .PDF files provided from pipeline into c:\output\out.pdf

PS C:\>'c:\file1.pdf' ,'c:\file2.pdf' | `
 Merge-Pdf -OutputPath c:\out.pdf

Ghostscript

Ghostscript can be downloaded from here. Once downloaded, complete the installation and add the bin directory (in the case of Windows, the default is C:\Program Files\gs\gs9.50\bin) to your system PATH.

Launch cmd/powershell prompt and using the following to merge your PDFs. The ^ designates a line continuation when using Windows Cmd.exe. If you are using Powershell, replace with `

c:\>gswin64 ^
-dBATCH ^
-dNOPAUSE -q ^
-sDEVICE=pdfwrite  ^
-dPDFSETTINGS=/prepress ^
-sOutputFile=YourOutputPdfFile.pdf ^
YourInputfile1.pdf ^ 
YourInputfile2.pdf