oe7drt-website/content/posts/2024/71-combine-multiple-pdf-files/index.md

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---
title: Combine multiple PDF files
summary: >
A quick note on how I got multiple PDF files combined into one single one
on a linux command line.
<small>The thumbnail was created with Google AI (Imagen 3).</small>
date: 2024-10-26T20:27:05+02:00
lastmod: 2024-12-08T11:13:52+0000
categories:
- computerstuff
tags:
- command-line
- openbsd
- freebsd
- linux
---
I sometimes want to combine two or three PDF files into one (to print them
two pages on a sheet, mostly).
I did this recently and here I write it down again so I can find it again
(I will forget this until the next time I need it again):
```console
$ gs -q -sPAPERSIZE=letter -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=output.pdf file1.pdf file2.pdf file3.pdf ...
```
Found on [Stack Overflow](https://stackoverflow.com/questions/2507766/merge-convert-multiple-pdf-files-into-one-pdf/2507825#2507825).
I also found another solution (further down at the link above) usable, but it produces much bigger files:
```console
$ qpdf --empty --pages *.pdf -- out.pdf
```