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XMP can be used in several file formats such as PDF, JPEG, JPEG 2000, JPEG XR, GIF, PNG, WebP, HTML, TIFF, Adobe Illustrator, PSD, MP3, MP4, Audio Video Interleave, WAV, RF64, Audio Interchange File Format, PostScript, Encapsulated PostScript, and proposed for DjVu. Embedding avoids a multitude of problems coming from proprietary vendor-specific metadata databases. This metadata describes various properties of the image like the creator tool, image dimension or a face region within the image.Įmbedding metadata in files allows easy sharing and transfer of files across products, vendors, platforms, without metadata getting lost. This is an example XML document for serialized XMP metadata in a JPEG photo: Similarly, it permits documents created from several smaller documents to retain the original metadata associated with the parts. This architecture makes it possible to retain authorship and rights information about, for example, images included in a published document. XMP metadata can describe a document as a whole (the "main" metadata), but can also describe parts of a document, such as pages or included images. This means that any binary data one wants to carry in XMP, such as thumbnail images, must be encoded in some XML-friendly format, such as Base64. XMP generally does not allow binary data types to be embedded. The standard is designed to be extensible, allowing users to add their own custom types of metadata into the XMP data. The most common metadata tags recorded in XMP data are those from the Dublin Core Metadata Initiative, which include things like title, description, creator, and so on. There are various equivalent ways to serialize the same XMP packet in RDF/XML. It is a syntax to express a Resource Description Framework graph in XML. As serialization format, a subset of the W3C RDF/XML syntax is most commonly used.
The abstract XMP data model needs a concrete representation when it is stored or embedded into a file. The prerequisite is that all involved editors either actively support XMP, or at least do not delete it from the resource. XMP allows each software program or device along the workflow to add its own information to a digital resource, which carries its metadata along. Software to add or modify properties in an XMP packet should leave properties that are unknown to it untouched.įor example, it is useful for recording the history of a resource as it passes through multiple processing steps, from being photographed, scanned, or authored as text, through photo editing steps (such as cropping or color adjustment), to assemble into a final document. Adding properties to a packet does not affect existing properties. Custom namespaces can be used to extend the data model.Īn instance of the XMP data model is called an XMP packet. a namespace for the Dublin Core Metadata Element Set). The XMP standard also defines particular namespaces for defined sets of core properties (e.g. These can be simple name/value pairs, structured values or lists of values. The defined XMP data model can be used to store any set of metadata properties.
Webp to jpg converter software 7.0 license key free#
4.2 Free software and open-source tools (read/write support).
Webp to jpg converter software 7.0 license key iso#
The XMP data model, serialization format and core properties is published by the International Organization for Standardization as ISO 16684-1:2012 standard. Although metadata can alternatively be stored in a sidecar file, embedding metadata avoids problems that occur when metadata is stored separately. Therefore, the non-XMP metadata have to be reconciled with the XMP properties.
It also provides guidelines for embedding XMP information into popular image, video and document file formats, such as JPEG and PDF, without breaking their readability by applications that do not support XMP. XMP standardizes a data model, a serialization format and core properties for the definition and processing of extensible metadata.
The Extensible Metadata Platform ( XMP) is an ISO standard, originally created by Adobe Systems Inc., for the creation, processing and interchange of standardized and custom metadata for digital documents and data sets.
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