You could try the best PST to PDF Converter Tool to convert Outlook PST files to PDF. This is the most effective method for converting Outlook PST files to PDF. It is compatible with all Windows operating systems, like Windows 8, 8.1, 10, 11, Vista, and XP. This app converts Outlook PST files to Adobe PDF documents. Users can easily try out the free trial versions. Users can save data after converting Outlook PST files to PDF format.