Currently, 150MB is the largest file size CloudSpot supported on CloudSpot. Images must also be less than 18,000px on the longest edge with an overall max image area of 250MP (for example, 17,000 x 14,500 pixels large). Larger than that is just too much awesomeness and you may see an error when you attempt to upload files.
If uploaded, larger files may fail to load in the Dashboard or Gallery.
If you have any questions or need additional help, feel free to contact us in the chat bubble in the lower right-hand corner of your dashboard. We're always happy to help!