That is some quilt! I think the fabric selections really make it interesting, it might also make it hard to find another version.
For me, I use an old school digital camera without many of the current options. I use this site (no connection)
https://www.reduceimages.com/
I just use their default for the reduction, and save to my downloads. Here then I have to upload, I use the "Go Advanced" option next to Post Quick Reply, and have to CTRL Click the Manage Attachment buttons to get it to open in a different window -- otherwise my browser protection don't like the pop ups. Although there are pricing plans and such, I've always done it for free and still am using it that way!