Understanding file sizes, types and resolution   
Recommended and Maximum file sizes

The XOpi™ Image Manager will accept file types JPEG, GIF and PNG

Files should not exceed 1500 pixel width at 72 dpi. (1500px is wider than most web pages, so there is usually not a reason to upload them larger).

The maximum accepted file size is 4.2mbs, larger files will need to be reduced to at least the maximum size prior to uploading. Images can be resized again using the XOpi Image Editor once uploaded.