Browse Standards
226 of 226 standards
Access to Biological Collection Data
(ABCD)An XML schema for exchanging specimen and observation data from biological collections.
ACM Computing Classification System
(CCS)A poly-hierarchical classification system for categorizing computing research literature.
Activity Streams 2.0
(AS2)A JSON-LD vocabulary for representing social activities, powering ActivityPub and the fediverse.

ActivityPub
A W3C protocol for decentralized social networking, enabling server-to-server federation across the fediverse.
AGROVOC
Over 42,000 concepts spanning agriculture, fisheries, and food science in more than 42 languages.
Analyzed Layout and Text Object
(ALTO)Encodes the physical layout and recognized text of digitized document pages from OCR output.
Anglo-American Cataloguing Rules, Second Edition
(AACR2)The cataloguing rulebook that defined how English-speaking libraries described their collections.

ANSI/NISO Z39.105-2023, Content Profile/Linked Document
(CP/LD)Transforms scholarly content into self-describing, machine-actionable linked documents using HTML and JSON-LD.
Archival Resource Key
(ARK)A persistent identifier scheme for long-term access to information objects managed by memory institutions.

Art & Architecture Thesaurus
(AAT)A multilingual thesaurus of over 55,000 concepts for art, architecture, and material culture.
Asset Description Metadata Schema
(ADMS)Describes reusable interoperability assets like schemas, code lists, and data models across borders.

Astronomy Visualization Metadata
(AVM)Embeds sky coordinates, observation details, and taxonomy directly into astronomical outreach images.

Atom Syndication Format
(Atom)An XML-based web syndication format for publishing and consuming feeds of entries such as blog posts and news.
AudioMD: Audio Technical Metadata Extension Schema
(AudioMD)An XML schema for recording technical metadata about audio digital objects in preservation systems.
Audiovisual Core Multimedia Resources Metadata Schema
(AC)Metadata vocabularies for describing biodiversity-related multimedia resources and collections.
Australian Government Locator Service
(AGLS)A Dublin Core profile that mandated metadata for Australian government services and information.

BagIt File Packaging Format
(BagIt)A file packaging convention using manifests and checksums for reliable digital content transfer.
BBC Ontologies
Fourteen interlinked RDF ontologies powering linked data across BBC Sport, News, Music, and more.

BIBFRAME (Bibliographic Framework Initiative)
(BIBFRAME)A linked data vocabulary built around Work, Instance, and Item to replace MARC for library data.

Bibliographic Ontology
(BIBO)An OWL ontology for modeling citations, documents, and scholarly references on the Semantic Web.
Bibliographic Reference Ontology
(BiRO)An OWL ontology for describing bibliographic references and their ordered collections within citing works.
Bioschemas
Extends Schema.org with usage profiles for genes, proteins, datasets, and other life science resources.
Book Interchange Tag Suite
(BITS)An XML tag suite extending JATS to encode the full text and metadata of scientific books.
C2PA Content Credentials
(C2PA)Tamper-evident content credentials that certify the provenance and edit history of digital media.
Cataloging Cultural Objects
(CCO)Rules and best practices for creating consistent, sharable descriptions of cultural works and images.
