Merge PDF Files
Whether you have a PDF file open or not, you can access the PDF merge tool by clicking the menu item “Merge” in main menu bar on the left side.
First, you need to click “Add Files” button and add the PDF files one by one, in the order that you would like them to be merged.
Second, Click the button “Merge Files”. The app then starts to merge the files.
When the merging is complete, the app will ask you to give the merged file a new file name and save it.