How to Batch Convert PowerPoint (PPT or PPTX) to PDF in Microsoft PowerPoint. Click the add Files button. Click on the file or select a folder in the left. Drag and drop the PowerPoint file. You will see a list of all PPT files and your options. Pick the files you want to convert. Click on the next button. Select what you want to convert and click OK. Click on next to add PowerPoint presentation. Click on next to add PowerPoint file to add to the list, click on Save all to PDF… . When you have finished selecting the files and are ready to click Next you will see some options. Choose the size you want the file to be and finish the conversion procedure, and the file will be copied or moved from the “Work Area” to the “Presentation Area”. Save all as a PDF file, and your work is done. How to Batch Convert PPT to PDF on Mac and Windows Step 1. Click the “File” icon in the top left of the program and choose “Click to open” or use the Menu on the left. Step 2. Choose your PowerPoint Presentation File. Step 3. Click the “Select” button to create a file tree. Step 4. Select the “PDF” type from the file tree, and create a new folder in the file tree. Step 5. Click on the “Name” option to name the folder. Click on the “Ok” button to close the file tree window.