I also needed to convert a PNG file to a JPG file since the latter has a lower size capacity. Since the image resizer was not working and I do not find it efficient to install a software just to convert a file, I opted for an online source.
Although I also have Photoshop yet I do not find it convenient to use since it also hogs some resources in my slow working laptop.
There are two online sites that I have found useful for converting PNG and JPG.
Ezgif dot com – maximum uploaded file size is 35MB
Online-Convert dot com – maximum uploaded file size is 100 MB
These two online sites are the easiest and quickest online tools I have used for converting PNG to JPG files for now without the need for downloading and installing software. Soon, I will still look for better alternatives which allow larger files to upload, larger than 100 MB file size.