Once you are done with the installation, open the PDF Tricks application from the system menu.
On the first run, you will get you a list of actions you can perform with this tool. To merge PDF files, go with the third option, obviously.
![merge pdf files using in ubuntu][3]
In the next step, click on **Add file** and select the files you want to merge:
![choose files to merge][4]
Once you select files, click on the **Merge** button:
![click on merge button][5]
And it will open the default file manager of your system. Here you can select where you want to save the merged file and what it should be named:
![locate and name the merged pdf file][6]
And that’s it. The combined pdf has been saved.
And if you are looking for a tool, we have a list of the [best PDF readers that you can use to read and edit PDF files.][7]
**Related read**: List of [PDF editors available for Linux][7].
### Method 2: Merge PDF Files using LibreOffice
The awesome LibreOffice is capable of handling many PDF related tasks. You can even [edit PDF files with LibreOffice Draw tool][8] for adding a digital signature, adding text, and much more.
The good thing is that you don’t need to install another application. LibreOffice is already installed on most distributions, if not all.
Open the file manager and select the PDF files that you want to merge.
**Right-click on selected files > Open With Other Application > LibreOffice Draw from there**, and it will open selected PDF files.
And it will open every PDF file you selected in a separate LibreOffice Draw instance:
![open pdf file in libreoffice][9]
Now, you have to **select individual pages or entire PDF file** (using Ctrl + A) from the left preview bar and drop it to the preview bar of the file that you want to combine with:
Once you are done with drag and drop, click on the 5th option from the top left, labeled as **Export Directly as PDF**:
![export directly as pdf in libreoffice][10]
And it will open a file manager from where you can locate and name the file:
![save merged file from libreoffice][11]
And that’s it!
### Bonus Tip: Merge PDFs in the command line [For advanced users]
What kind of Linux tutorial would it be if I didn’t include the command line method? To merge PDF files in the command line, you can use ImageMagick.
ImageMagick is actually an image-related tool. PDF files are essentially images and this is why ImageMagick can work with them.
You probably don’t even need to [install ImageMagick][12] as it is already installed in most distros by default.
For example, I will be adding 3 PDF files named pdf-1.pdf, pdf-2.pdf, and pdf-3.pdf and will name the final merged PDF file output as MergedFile.pdf (how clever):
![change policy in imagemagick to merge pdf files][14]
Save the changes, and now you can easily merge files using ImageMagick:
![merge pdf files using imagemagick in linux terminal][15]
### Wrapping Up
Now you know several ways of combining PDF files in Linux. Chances are that the merged PDF file is big in size. If you have to upload the merged PDF file on a portal that has size restrictions, you can [compress the PDF file][16].
Let me know if you face any issues with above discussed methods.
