Many online converters advertise jpg to ppt conversion, but the results are typically not what users were looking for. A direct jpg to ppt conversion just imports the JPEG picture as picture on one of the slide of otherwise empty presentation.
What most users actually want, is to import the picture into existing presentation, especially in case that they do not have access to PowerPoint. You can try some of the open source alternatives that support PowerPoint formats, but it's fair to assume using the original software is best.
Updated: October 23, 2023