I have a Magento website with 1k+ products, recently I've decided that I want to make a change in the pictures, resize them with a canvas behind. So I downloaded the whole media folder and tried to change an image of only one product to make a try.
Changed the size, the look and added a watermark on the picture to see if it changes. Refreshed the whole cache, deleted cache folder in the media folder and still no change with the picture in the front-end. But when I tried to access it directly it was the image I uploaded.
In the back-end I see the image I uploaded in the thumbnail of the product when editing it.
How can I fix it? Thanks in advance.