Ans - You can easily export the OST file to Adobe Document in PDF format using the OST to PDF Converter. 1. Install the OST to PDF Converter. 2. Browse the OST file. 3. Now, preview and select the desired folders, and then click Next. 4. Select the PDF option and choose the features as per your needs. 5. After that, select the path location where you want to save. 6. Click on the Convert button.