Idea of Upload to Cloud Icon
The icon for upload to cloud is a cloud with an arrow pointing up. Since you are loading the images on a cloud service the arrow pointing up represents the images going into the cloud system that keeps the pictures out of your device but still easily accessible.
This is the Upload to Cloud icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.