Whenever you upload a photo that has a width between 320 and 1080 pixels & the aspect ratio between 1.91:1 and 4:5, the photo is kept at the original resolution. If it isn't between the above mentioned specification, there are two cases: - If the photo width is less than 320 pixels: the image is enlarged to fit 320 pixels width. - If the photo width is higher than 1080 pixels: the resolution of the image is reduced to 1080 pixels width (Not Cropped Just Scaled Down in Quality) Ofcourse if the image you are uploading is of the different aspect ration than the one mentioned above you will be asked to crop the image at the time of upload.