
Overall using Preview to convert PNG to JPEG and JPG to PNG is probably the easiest method that is universally applicable to Mac users on just about any MacOS version. Naturally you could modify the process and save any opened image file to a new image file format to do a similar conversion to other supported file types, many image formats are supported by Preview this way. If you want you can go back and delete the origin file, that is up to you, if you want to keep both the PNG and JPEG version of the image. Your PNG file now has been converted and saved as a JPG file to the location you specified in Finder!



Here are the necessary steps to convert the PNG / JPG as desired with Preview: Here are the steps to change Mac's screenshot format using Terminal: Open Terminal from the Application > Utilities folder, or use Spotlight to open it. How to Convert PNG to JPG, or JPEG to PNG on Mac
