Brand Store Image Compression

Hello

I’m having ongoing issues with image compression that result in visible artifacts on our brand store page. I’ve done extensive research and have already tried adjusting image resolution and DPI, as well as testing both PNG and JPG formats, but the compression artifacts persist. The issue is most noticeable on white text within the images.

I create the brand store images in Canva and export them as JPG files at 100% quality, carefully checking file sizes before uploading. Interestingly, I don’t experience these same issues with A+ content—only on the brand store page. Has anyone found a solution for this?