- Open PDFill PDF Tools (Free)
- Click 'Scan into Image or PDF'
- Select the location you want to save the file and a name for the file. Be sure to change the File Type to PDF. Then click 'ScanNow'
- Configure the settings to your liking and press 'Scan'
- After the files are scanned you will see this window. Press 'Save as' and it will bring up a prompt to save the files in one PDF.