The CP/LD format defines a flexible, extensible, machine readable format that links HTML5 documents with content to JSON-LD graphs for the data and semantics.^[1]

The Linked Document part of the standard outlines the minimal characteristics of documents, whereas the Content Profile part describes how to extend and refine rules for specific use cases.

History

2018. For internal use, as an alternative for the print driven, more rigid, XML format used at the Elsevier for processing scholarly articles, teams at that company started developing CP/LD in 2018.
2020. A proposal to create a standard from this effort was accepted by the NISO.
2023. CP/LD was published by the NISO and approved by the ANSI.

Examples

A example of a minimal document is: <syntaxhighlight lang="html"> <!DOCTYPE html> <html lang="en">

 <head>
   <link rel="schema.dcterms" href="http://purl.org/dc/terms/" />
   <base href="https://example.com/minimal" />
   <meta name="id" content="https://example.com/minimal" />
   <meta name="dcterms.conformsTo" content="https://w3id.org/cpld/" />
   <title>Minimal Linked Document</title>
   <script type="application/ld+json">
     {
       "@context": {
         "@vocab": "http://schema.org/",
         "doc": "https://example.com/minimal#",
         "ex": "https://example.com/narrativeStructure/"
       },
       "@graph": {
         "@id": "https://example.com/minimal",
         "schema:conformsTo": "https://w3id.org/cpld/",
         "@type": "schema:Article",
         "schema:hasPart": [
           {
             "@id": "doc:e1",
             "@type": "ex:Introduction"
           }
         ]
       }
     }
   </script>
 </head>
 <body>

Minimal document

Content Profile/Linked Document
Abbreviation	CP/LD
Status	Published
Year started	2018
First published	2023
Organization	ANSI/NISO
Committee	www.niso.org/standards-committees/cpld
Editors	Rinke Hoekstra
Base standards	HTML, JSON-LD,
Related standards	RDF, IRI, W3C Publication Manifest
Domain	Semantic Web; Semantic publishing; Academic publishing;
Website	www.niso.org/publications/z39105-2023-cpld

Hello World

 </body>

</html> </syntaxhighlight>

Publication Date: December 12, 2023
ISBN: 978-1-950980-29-1
DOI: 10.3789/ansi.niso.z39.105-2023
ISSN: 1041-5653

External links

z39105-2023-cpld on niso.org
CP/LD on GitHub
CP/LD viewer for Visual Studio Code
schema.org

References

^ "ANSI/NISO Z39.105-2023, Content Profile/Linked Document | NISO website".

[1] "ANSI/NISO Z39.105-2023, Content Profile/Linked Document | NISO website".

[1]