I occasionally need to convert the background color of a particular image to be transparent so that the image looks better on medium with backgrounds of colors other than the image’s original ...

While downloading images from the internet, you may have come across one of the relatively newer image formats called WebP.

An increasing number of websites are adopting 'WebP' and 'AVIF' as the format for images inserted into pages. However, many image viewers and image editing software do not support WebP or AVIF, ...