the file sizes of images increase after being uploaded and used in a carousel. Let's say my uploaded image has a file size of 784 kb and a dimension of 2560 x 1440 px. When I save the image out of a carousel by opening a new tab, the file size shows 2.4 mb at 2048 x 1366 px. So the file size increases while the dimension of the used picture has become smaller.
Please have a look here (i.e. picture no.7):
Since the performance of my website, especially on mobile phones, is not satisfying, I wonder if each Image being used in a carousel is getting bigger in file size and needs too much time to be loaded.
Thank you for your help and best regards from Berlin