Commons:Structured data/Modeling/Meta

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GLAM and culture

SPARQL

Modeling

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	Please help! – Work in progress
	You can help by working on guidelines and providing examples below. Visit the talk page to discuss this process in general.

How to model various types of file metadata and exif(-like) data in structured data, for files on Wikimedia Commons

Modeling various types of metadata and exif(-like) data related to Wikimedia Commons files

Type of metadata	Wikidata property	Status
Type	instance of (P31)	Working
Exposure time	exposure time (P6757)	Done
F-number	f-number (P6790)	Done
Focal length	focal length (P2151)	Done
ISO speed rating	ISO speed (P6789)	Done
MIME type	media type (P1163)	Done
Number of pages	number of pages (P1104)	Done
Data size	data size (P3575)	Done
Duration	duration (P2047)	Done
Width	width (P2049)	Done
Height	height (P2048)	Done
Checksum	checksum (P4092) with qualifier determination method or standard (P459)	Done

Data in RDF

Field	Example	Description	Related property
schema:caption	Otham ways [3]	The caption (label in Wikibase)
schema:contentSize	2848686	Size of the file in bytes	data size (P3575)
schema:contentUrl	<https://upload.wikimedia.org/wikipedia/commons/0/06/Otham_ways_(3)_-_geograph.org.uk_-_7078464.jpg>	URL of the file
schema:encodingFormat	image/jpeg	Mime type	media type (P1163)
schema:height	4320	Height of the file in pixels	height (P2048)
schema:url	commons:Otham ways (3) - geograph.org.uk - 7078464.jpg	URL of the file (can be used in image grid)
schema:width	3240	Width of the file in pixels	width (P2049)
schema:version	969368863	revisionid of last revision
schema:dateModified	12 December 2024	date of last revision
rdf:type	schema:ImageObject / schema:MediaObject /wikibase:Mediainfo	Type of file
rdfs:label	Otham ways [3]	Same as caption

Properties not to use

These properties shouldn't be used

Property	Replacement	Notes
Commons category (P373)	location of creation (P1071) or depicts (P180) and others	Record the information about the category instead, i.e., use depicts (P180) for what is depicted or use location of creation (P1071) if it's about where to photo was created.
file format (P2701)	Should use media type (P1163) instead	Duplicate information

Examples

• 
  Winter sunset in Maratea - Italy 2015.JPG exposure time (P6757) → 0.008, f-number (P6790) → 6.3, focal length (P2151) → 28 millimeter, ISO speed (P6789) → 100, media type (P1163) → image/jpeg
• 
  Umeda Sky Building, Osaka, November 2016 -02.jpg exposure time (P6757) → 0.0166, f-number (P6790) → 4.5, focal length (P2151) → 25 millimeter, ISO speed (P6789) → 320, media type (P1163) → image/jpeg