| AuthorContact | Information to contact the author of an image. |
| ColorSpace | The color model. |
| DimensionCategory | Associates the image size to a given category (e.g., 70x70, 100x100, 480x480, thumbnail). For example, if an image with a dimension of 72x73 is sent, it may be categorized as a 70x70 image. |
| FileName | The name of the image file. |
| FileSize | The size of the image file. |
| Format | Identifies the format of an image. Refer to OpenTravel Code List Content Format Code (CFC). |
| Height | The height of the image item (unit specified by unit of measure). |
| IsOriginalIndicator | When true, the image is the original file and format. When false, the image is not the original file and format. |
| Language | The language in which the image text is provided. |
| Latitude | The latitude of what is depicted in the image. |
| Longitude | The longitude of what is depicted in the image. |
| OriginalFileName | The original name of the image file. |
| Resolution | The resolution of an image expressed in DPI (Dots Per Inch). |
| Sort | Used to define the display order. |
| UnitOfMeasureCode | The unit of measure for the image item. Refer to OpenTravel Code list Unit of Measure (UOM). |
| Width | The width of the image item (unit specified by unit of measure). |
| ApplicableEnd | End month and day or date for which the multimedia content is relevent (e.g. the end of a season or the start of an event). When a year is not used (i.e. only the month and day) it signifies a recurring event. |
| ApplicableStart | Start month and day or date for which the multimedia content is relevent (e.g. the start of a season or the start of an event). When a year is not used (i.e. only the month and day) it signifies a recurring event. |
| Author | The author of the multimedia object. |
| ContentID | The content ID of a file attachment with the prefix 'cid:'. The value of this can be used to retrieve the corresponding attachment by the receiving system. |
| CopyrightEnd | The end date for which the multimedia content rights are claimed. |
| CopyrightNotice | A copyright notice for the multimedia object. |
| CopyrightOwner | Owner of the copyright for the multimedia content. |
| CopyrightStart | The start date for which the multimedia content rights are claimed. |
| EffectiveEnd | The end date for which the content is considered valid. |
| EffectiveStart | The start date for which the content is considered valid. |
| RecordID | Uniquely identifies this file in the message. |
| SourceID | Unique identifier for the source of the multimedia object (e.g., the original image file). |
| Title | The title of the multimedia object. |