You can do it easily by simply converting them to other size efficient formats before uploading or emailing them. The best idea to deal with this heavy image size trouble is to find ways to lower down the image resolution. You may also waste lots of bandwidth and time to upload these photos to online libraries. It is not possible to share such heavy images on other devices.
They produce crystal clear images but the image size also goes as high as up to tens of megabytes. Most of the digital cameras these days are designed to offer very high picture resolution.