Many applications now provide custom dialog windows to simplify the manual entry and editing of XMP metadata.

Schemas can be based on external standards (e.g., Dublin Core and EXIF) or internal schemas (e.g., XMP Rights Management) and can be associated with specific file types (e.g., PDF) or applications (e.g., Adobe Photoshop). Within XMP, metadata can be expressed using different schemas and can be extended by adding new schemas. XMP's model is flexible enough to allow structural metadata to be expressed-so that, for example, different pages in a document can be described independently. XMP values are expressed in XML using a subset of RDF (see Section 6.4), allowing great flexibility in metadata expression. In 2001, Adobe introduced the Extensible Metadata Platform (XMP) to provide a general solution for embedding metadata within files like images and PDF documents.

The JPEG 2000 file format has an XML Box container that can include any XML data, although DIG35 is suggested.

DIG35 groups elements into four main categories: image creation, content description, provenance, and intellectual property rights. The DIG35 standard provides an extensible XML framework that can be used to embed metadata in the private tags of image formats like TIFF and JPEG.

Downloadable exif data viewer