---
title: File Metadata
framework: coreservices
role: collectionGroup
role_heading: API Collection
path: coreservices/file_metadata
---

# File Metadata

Search for files based on data that is part of the file or file system.

## Topics

### Opaque Types

- [MDSchema](coreservices/file_metadata/mdschema.md)
- [MDItem](coreservices/file_metadata/mditem.md)

### Structures

- [MDExporterInterfaceStruct](coreservices/mdexporterinterfacestruct.md)
- [MDImporterBundleWrapperURLInterfaceStruct](coreservices/mdimporterbundlewrapperurlinterfacestruct.md)
- [MDImporterInterfaceStruct](coreservices/mdimporterinterfacestruct.md)
- [MDImporterURLInterfaceStruct](coreservices/mdimporterurlinterfacestruct.md)
- [MDLabelDomain](coreservices/mdlabeldomain.md)
- [MDQuerySortOptionFlags](coreservices/mdquerysortoptionflags.md)

### Classes

- [MDLabel](coreservices/mdlabel.md)

### Data Types

- [MDQuery](coreservices/file_metadata/mdquery.md)

### Constants

- [kMDItemApplicationCategories](coreservices/kmditemapplicationcategories.md)
- [kMDItemCameraOwner](coreservices/kmditemcameraowner.md)
- [kMDItemContentTypeTree](coreservices/kmditemcontenttypetree.md)
- [kMDItemDateAdded](coreservices/kmditemdateadded.md)
- [kMDItemDownloadedDate](coreservices/kmditemdownloadeddate.md)
- [kMDItemEditors](coreservices/kmditemeditors.md)
- [kMDItemExecutableArchitectures](coreservices/kmditemexecutablearchitectures.md)
- [kMDItemExecutablePlatform](coreservices/kmditemexecutableplatform.md)
- [kMDItemFocalLength35mm](coreservices/kmditemfocallength35mm.md)
- [kMDItemGPSAreaInformation](coreservices/kmditemgpsareainformation.md)
- [kMDItemGPSDOP](coreservices/kmditemgpsdop.md)
- [kMDItemGPSDateStamp](coreservices/kmditemgpsdatestamp.md)
- [kMDItemGPSDestBearing](coreservices/kmditemgpsdestbearing.md)
- [kMDItemGPSDestDistance](coreservices/kmditemgpsdestdistance.md)
- [kMDItemGPSDestLatitude](coreservices/kmditemgpsdestlatitude.md)
- [kMDItemGPSDestLongitude](coreservices/kmditemgpsdestlongitude.md)
- [kMDItemGPSDifferental](coreservices/kmditemgpsdifferental.md)
- [kMDItemGPSMapDatum](coreservices/kmditemgpsmapdatum.md)
- [kMDItemGPSMeasureMode](coreservices/kmditemgpsmeasuremode.md)
- [kMDItemGPSProcessingMethod](coreservices/kmditemgpsprocessingmethod.md)
- [kMDItemGPSStatus](coreservices/kmditemgpsstatus.md)
- [kMDItemHTMLContent](coreservices/kmditemhtmlcontent.md)
- [kMDItemIsApplicationManaged](coreservices/kmditemisapplicationmanaged.md)
- [kMDItemIsLikelyJunk](coreservices/kmditemislikelyjunk.md)
- [kMDItemLensModel](coreservices/kmditemlensmodel.md)
- [kMDLabelAddedNotification](coreservices/kmdlabeladdednotification.md)
- [kMDLabelBundleURL](coreservices/kmdlabelbundleurl.md)
- [kMDLabelChangedNotification](coreservices/kmdlabelchangednotification.md)
- [kMDLabelContentChangeDate](coreservices/kmdlabelcontentchangedate.md)
- [kMDLabelDisplayName](coreservices/kmdlabeldisplayname.md)
- [kMDLabelIconData](coreservices/kmdlabelicondata.md)
- [kMDLabelIconUUID](coreservices/kmdlabeliconuuid.md)
- [kMDLabelIsMutuallyExclusiveSetMember](coreservices/kmdlabelismutuallyexclusivesetmember.md)
- [kMDLabelKind](coreservices/kmdlabelkind.md)
- [kMDLabelKindIsMutuallyExclusiveSetKey](coreservices/kmdlabelkindismutuallyexclusivesetkey.md)
- [kMDLabelKindVisibilityKey](coreservices/kmdlabelkindvisibilitykey.md)
- [kMDLabelLocalDomain](coreservices/kmdlabellocaldomain.md)
- [kMDLabelRemovedNotification](coreservices/kmdlabelremovednotification.md)
- [kMDLabelSetsFinderColor](coreservices/kmdlabelsetsfindercolor.md)
- [kMDLabelUUID](coreservices/kmdlabeluuid.md)
- [kMDLabelUserDomain](coreservices/kmdlabeluserdomain.md)
- [kMDLabelVisibility](coreservices/kmdlabelvisibility.md)
- [kMDPrivateVisibility](coreservices/kmdprivatevisibility.md)
- [kMDPublicVisibility](coreservices/kmdpublicvisibility.md)
- [kMDQueryAllowFSTranslation](coreservices/kmdqueryallowfstranslation.md)
- [kMDQueryReverseSortOrderFlag](coreservices/kmdqueryreversesortorderflag.md)
- [kMDQuerySynchronous](coreservices/kmdquerysynchronous.md)
- [kMDQueryWantsUpdates](coreservices/kmdquerywantsupdates.md)

## See Also

### Related Documentation

- [File Metadata Search Programming Guide](apple-archive/documentation/Carbon/Conceptual/SpotlightQuery/Concepts/Introduction.html.md)