EXPORT JPEG WITH BACKGROUND

Hello everyone,

I have created thumbnails for my new website using CorelDraw 2021. My developers want the files in JPEG format only, but because I have included a small pink "Best buy" circle on the left-hand side of the image it has created a white background on that side. I have tried exporting in PNG format using the transparency as suggested on this page but to no avail.

What is the most straightforward way this can be done? It needs to be in .jpg format without the white border on the left side.

Snip 1 is the JPEG file on the actual website (look at the bottom left-hand side - this need to be transparent).

Snip 2 is the JPEG file without the pink "Best buy" circle.

Tried many different export types but nothing seems to work. Have many files to convert so help would be appreciated.

Thanks in advance.