pdfmerge

Merge multiple PDFs into one.

Installation

Requirements: Java 8+

1. Download the prebuilt distribution from the project's Releases page, or build it yourself (see instructions below).
2. Extract the pdfmerge-<version>.zip file where you want.
3. Add the bin directory inside the extracted pdfmerge directory to your PATH.
4. Confirm that you are able to run the program with pdfmerge --version.

Usage

To confirm your installation you can display the help message by issuing:

pdfmerge --help

The output should be similar to this:

Usage: pdfmerge [-fhV] -o=OUTFILE FILE FILE...
Merge multiple PDF FILEs into OUTFILE.

      FILE FILE...       Path to the files to be merged.
  -f, --force            Overwrite OUTFILE.
  -h, --help             Show this help message and exit.
  -o, --output=OUTFILE   Path to the output file.
  -V, --version          Print version information and exit.

Usage is very simple: first, you have to specify the output file with the -o / --output option. Then you have to specify at least two input files:

pdfmerge -o path/to/output.pdf path/to/input1.pdf path/to/input2.pdf

If the output file already exists the program will not overwrite it and it will exit with an error. To overwrite the output file use the -f / --force option:

pdfmerge -f --output existing.pdf input1.pdf input2.pdf

The program only accepts file paths; but you can use globs to reference PDFs in a directory:

pdfmerge -o output.pdf mypdfs/*.pdf

Building

Requirements: JDK 8+

The build defaults to building the ZIP file.

Building the default ZIP distribution

To run the unit tests and build the ZIP file execute:

./mvnw package

To do all of the above and also run the integration tests execute:

./mvnw verify

The built ZIP file will be in the target directory.

Building the executable fat JAR

To build an executable JAR that contains all dependencies use the fatjar profile:

./mvnw package -Pfatjar

The built pdfmerge.jar will be in the target directory.

You can use it like this:

java -jar pdfmerge.jar <options>

Acknowledgements

This project is heavily building on these libraries:

• picocli
• Apache PDFBox

Both libraries are licensed under the Apache License version 2.0.

Contact

Gábor Némethi - nemethi

Project - https://github.com/nemethi/pdfmerge

License

This project is licensed under the MIT License. See the LICENSE file for more information.