We also wrote an in-depth guide on how to convert images into PDF files, so we encourage you to check it out. Note: You can use any application for this purpose, but we decided to use the Photos app since it’s the default photo viewer app on Windows 10. Select the save location and enter the desired file name.When the Print window opens, set Printer to Microsoft Print to PDF.Click the Print option in the top right corner.Open the screenshot that you want to convert in the Photos app.Home › How to › Save screenshot as PDF on Windows 10