XMP Basic Schema

The XMP Basic Schema contains XMP properties that provide basic descriptive information.

Reference: XMP Specification and Documentation

Property Label Value type Exiv2 type Category Description
Advisory Advisory bag XPath XmpBag External An unordered array specifying properties that were edited outside the authoring application. Each item should contain a single namespace and XPath separated by one ASCII space (U+0020).
BaseURL Base URL URL XmpText Internal The base URL for relative URLs in the document content. If this document contains Internet links, and those links are relative, they are relative to this base URL. This property provides a standard way for embedded relative URLs to be interpreted by tools. Web authoring tools should set the value based on their notion of where URLs will be interpreted.
CreateDate Create Date Date XmpText External The date and time the resource was originally created.
CreatorTool Creator Tool AgentName XmpText Internal The name of the first known tool used to create the resource. If history is present in the metadata, this value should be equivalent to that of xmpMM:History's softwareAgent property.
Identifier Identifier bag Text XmpBag External An unordered array of text strings that unambiguously identify the resource within a given context. An array item may be qualified with xmpidq:Scheme to denote the formal identification system to which that identifier conforms. Note: The dc:identifier property is not used because it lacks a defined scheme qualifier and has been defined in the XMP Specification as a simple (single-valued) property.
Label Label Text XmpText External A word or short phrase that identifies a document as a member of a user-defined collection. Used to organize documents in a file browser.
MetadataDate Metadata Date Date XmpText Internal The date and time that any metadata for this resource was last changed. It should be the same as or more recent than xmp:ModifyDate.
ModifyDate Modify Date Date XmpText Internal The date and time the resource was last modified. Note: The value of this property is not necessarily the same as the file's system modification date because it is set before the file is saved.
Nickname Nickname Text XmpText External A short informal name for the resource.
Rating Rating Closed Choice of Real XmpText External A number that indicates a document's status relative to other documents, used to organize documents in a file browser. Values are user-defined within an application-defined range.
Thumbnails Thumbnails alt Thumbnail XmpText Internal An alternative array of thumbnail images for a file, which can differ in characteristics such as size or image encoding.