In this document, you will find recommendations about file dimension and size for medias in the platform, organized by feature. Dimensions indicated for images are given to get an optimal display, we recommend to double the given dimensions or edit your image in 144 ppp so they can be displayed optimally on high resolution screens.
For images the platform is not displaying the original file uploaded, it serves the lightest version of each image file regarding required quality, user browser and screen resolution to give users the best experience possible while consuming as little bandwidth as possible.