Run the software and connect iPhone to Mac. After the software has recognized iPhone device, click the name of iPhone and choose a library of iPhone in the left sidebar.
You can select one or certain files with Command key, and then right-click the selected files and choose Transfer to > My Computer.
In addition, you can check the square checkbox beside Name to select all files, and click the transfer button at the right bottom. After that, you need to check “Save to Folder” in the pop-up window and click Change to choose a target folder on your Mac to save the files. Then click Transfer Now to start backing up iPhone files to Mac computer.