There are several options for dealing with your issue:
Employ a Photoshop script: In Photoshop, you might be able to locate or write a script that would transform your outlined JPEG images into transparent PNG files. Online script searches and bespoke script creation are both options you have.
Use a third-party tool: Many third-party applications are readily available that can batch convert JPEG files to PNG files. XnConvert, IrfanView, and ImageMagick are a few examples. To find the one that best suits your needs, you can test out a few various tools.
Employ a freelancer: If you don’t have the time or the necessary skills to conduct the conversion yourself, you might want to think about hiring a freelancer. You may find a lot of independent graphic designers and picture editors to assist you with this assignment.