You can upload images in two ways:

A.You can upload images by clicking the "Upload image" button, or dragging and releasing your local picture at the image area, or using the hot keys of "Ctrl+V".

B.You can input the http address of pictures to up load it.

Tip: You can not "drag and release" or "Ctrl+V" to upload image on your phone but you can upload your local image or take a photo then upload it.