Are you looking for solutions that can help you convert your OST files to PDF format along with all attachments? Then, you must go with my suggestion  OST to PST  Conversion Tool, which is much more efficient to accomplish the given task. Also if you need, you can go through with a manual solution to convert OST to PDF. Also, the software carries many additional features, which help you to use explore these features when you need them.

• You can use the Date Range Filter to convert only the emails within the date you need.
• The utility allows you to export multiple Outlook OST files immediately.
• If you are a novice user or don't have the technical expertise, even then, you can easily do the migration process using its simple User-Interface.
• You can convert the OST files into multiple file formats and can migrate them to various email clients.
• The software can run on any version of Windows.