upload attributes
title
This is used in the gallery to describe the image, eg, its title, an alt tag.
description
A short text to describe the image. The use depends on the gallery type.
name
The file name taken from the upload and used when saving a file from the web browser.
mime
The image MIME type, immutable, it depends on the upload file data.
dimensions
The full size width and height of the image file. The size displayed depends on the gallery type.
md5
The MD5 check sum of the image file. The assumption is the md5 is uniquely identifies the upload file.
download url
The URL (after the domains name) used to download the file. the 2nd and 3rd words (between the /) are the sizes for the image resize. The final words is the md5 and the suffix for the MIME type. (Note similar files as determined by MD5 that are uploaded to different places share the URL and storage. This means if you upload the same image multiple times or clone a page set and its uploads yo do not duplicate storage.)
rank
An integer used when manually ordering.
icon
The image shown small size. Click on the icon to download the original image.
storage id
Internal number - ignore this.