Open the PNG image in an image editor or viewer that supports saving in different formats
Select File
Choose Save As or Export
Select JPG or JPEG as the file format
Adjust quality settings if prompted
Save the file with a new name or location
Use an online PNG to JPG converter if you do not have editing software
Upload the PNG file to the converter
Choose JPG as the output format
Download the converted JPG file
On Windows, open the image in Paint, then use Save As and choose JPEG picture
On Mac, open the image in Preview, then use File and Export and select JPEG
On mobile devices, use a photo editing app or file converter app that supports JPG export