PDF files are the ultimate in reliable document formatting and maintain their appearance across different devices and operating systems.

But combining multiple PDFs into one larger document can be difficult and fiddly without a dedicated app.

Here are the best ways to merge PDFs on Linux using the command line and through a graphical utility.

woman using a sewing machine

It is part of the poppler-utils package, which comes pre-installed on most popular Linux distros.

Using pdfunite to join PDF files in your terminal is simple.

First,use the cd commandto navigate to the directory containing your PDFs.

fco travel advice on Cambodia as part of a combined PDF

For example:

…will combine the three documents and output them asDestinations.pdf.

you’ve got the option to view the resulting PDF in any PDF viewer.

PDF Arranger has a fair few dependencies, so install these first.

join pdfs with pdfunite

The app is somewhat bare when you first open it.

To start, press theOpenicon in the top left corner, then select your PDF files, and clickOpen.

The interface will populate with individual pages of your chosen PDFs.

install PDF Arranger using PIP

If all you want to do is merge them into one document, click theSaveorSave asbutton.

Choose a location and filename for your output file, then clickSave.

Rearranging pages is also simple: just click and hold then drag the page to a new location.

multiple pages in PDF arranger

Right-clicking on a page or highlighted group of pages will give you a context menu.

Here there are entries to rotate, duplicate, split, and trim pages.

Clicking on one of these will do exactly what you think.

Don’t Just Merge PDFs!