FTP confirms that my content uploads folder has numerous versions of every uploaded image. I deleted them all, then went to WP –>Settings –> Media and set all image sizes to “0”, which is supposed to stop WP generating multiple image versions on upload (and I tested this, it seems to work).
But as soon as I use an image in the theme, multiple versions are created (some of these new versions are way heavier than the originals!). From my reading, this generation of multiple versions is caused by the theme itself. How can I disable this please?