upload attributes
title
This is used in the library to describe the files, eg, its title, an alt tag.
description
A short text to describe the file.
name
The file name taken from the upload and used when saving a file from the web browser.
mime
The file MIME type, immutable, it depends on the upload file data.
dimensions
The full size width and height of the file if an image. For non images these are zero.
md5
The MD5 check sum of the 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. If an image the 2nd and 3rd words (between the /) are the sizes for the image resize. Non images are download as originals. 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
An icon indicating the file MIME type or if an image an thumbnail of the image. Click on the icon to download the original file.
storage id
Ignore this.