Software for PDF files
The software is designed to bring PDF files!The software is easy to install and use and is completely free.
First, download the software from here
open the software
It will look like this:
Now you'll Merge tab
Click the plus sign to the right software!And select the files you want to combine.
After you select all files!You choose where to save the files (I picked desktop)!!Then click on "Merge files!
In this regard the operation succeeded!Click OK
Then we received 1 file instead of seeing e.g. 4 files
Note: the software can consolidate up to 5 files only.
Good luck.