How to Change Settings to Open a PDF File. A Portable Document File is a type of file that uses an open standard across different computer platforms and programs.

Step 6: Adobe will open your newly merged PDF in a new tab, where you can edit it or download the file. Hit the download button in the top menu.

The files will begin to upload to PDF Joiner (this could take a few minutes, depending on how many and how large your files are). Click Join Files in the bottom right-hand corner of the screen.