Commons:Structured data/Modeling/Meta
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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
File:Winter_sunset_in_Maratea_-_Italy_2015.JPGexposure time (P6757) → 0.008, f-number (P6790) → 6.3, focal length (P2151) → 28 millimeter, ISO speed (P6789) → 100, media type (P1163) → image/jpeg
File:Umeda_Sky_Building,_Osaka,_November_2016_-02.jpgexposure time (P6757) → 0.0166, f-number (P6790) → 4.5, focal length (P2151) → 25 millimeter, ISO speed (P6789) → 320, media type (P1163) → image/jpeg
_-_geograph.org.uk_-_7078464.jpg){kind=link}
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