OS X has a built in application that lets you open and read pdf files. It is called Preview. If you click on a pdf file it will automatically open in Preview.
Thankfully with OS X Yosemite (OSX 10.10) it’s really easily merge 2 pdf files with the built in OS X Preview app.
From within preview you can add more pages to the pdf file. When you save the pdf file these extra pages are combined so that all the extra pages are merged with the original pdf.
For older versions of OS X (10.6-10.7) click here.
For OS X 10.9 Mavericks click here.
For newer versions click here.
For OS X Yosemite read on…
Step 1 – Open the first pdf file in Preview. (Double click on a pdf file to open it.)
Step 2 – Add in the extra pages.
There are 2 ways to do this.
1. Select “Edit” then “Insert page from file” from the menu. It will prompt you to select a file, it can be a pdf or an image such as a jpg. It will put the new file after the currently selected page of the pdf file.
2. Alternatively, you can open the ‘thumbnail view’ on the first pdf file, then drag a pdf file from the desktop into the thumbnail draw where you want it. To open the thumbnail go to the “View” menu then “Thumbnails” and it will open a drawer with a preview of every page on it. These previews are called thumbnails.
Step 3 – Save the pdf file.
– Select File: Save from the menu.
– If that does not work select ‘Print’ and then select ‘Save to PDF’ to save the documents to a new pdf file.
If you are having problems you might like to try to ‘Print to pdf’ from Preview. Click here to read about that.