| UUID | uuid | string | | Universally Unique Identifier. |
| Label | label | string | | Label to help identify the image. |
| URL | url | string | | URL of the image |
| Data | data | string | | As an alternative to the URL and only when the source data is small, like an SVG, the raw data may be provided using Base64 encoding. |
| MIME | mime | string | | Format of the image. |
| Description | description | string | | Details of what the image represents. |
| Alt | alt | string | | Alternative text if the image cannot be shown. |
| Height | height | integer | | Height of the image in pixels. |
| Width | width | integer | | Width of the image in pixels. |
| Digest | digest | dsig.Digest | | Digest can be used to ensure the image contained at the URL is the same one as originally intended. |
| Meta | meta | cbc.Meta | | Meta contains additional information about the image. |
