---
title: Common Metadata Attribute Keys
framework: coreservices
role: collectionGroup
role_heading: API Collection
path: coreservices/file_metadata/mditem/common_metadata_attribute_keys
---

# Common Metadata Attribute Keys

Metadata attribute keys that are common to many file types.

## Topics

### Constants

- [kMDItemAttributeChangeDate](coreservices/kmditemattributechangedate.md)
- [kMDItemAudiences](coreservices/kmditemaudiences.md)
- [kMDItemAuthors](coreservices/kmditemauthors.md)
- [kMDItemAuthorAddresses](coreservices/kmditemauthoraddresses.md)
- [kMDItemCity](coreservices/kmditemcity.md)
- [kMDItemComment](coreservices/kmditemcomment.md)
- [kMDItemContactKeywords](coreservices/kmditemcontactkeywords.md)
- [kMDItemContentCreationDate](coreservices/kmditemcontentcreationdate.md)
- [kMDItemContentModificationDate](coreservices/kmditemcontentmodificationdate.md)
- [kMDItemContentType](coreservices/kmditemcontenttype.md)
- [kMDItemContributors](coreservices/kmditemcontributors.md)
- [kMDItemCopyright](coreservices/kmditemcopyright.md)
- [kMDItemCountry](coreservices/kmditemcountry.md)
- [kMDItemCoverage](coreservices/kmditemcoverage.md)
- [kMDItemCreator](coreservices/kmditemcreator.md)
- [kMDItemDescription](coreservices/kmditemdescription.md)
- [kMDItemDueDate](coreservices/kmditemduedate.md)
- [kMDItemDurationSeconds](coreservices/kmditemdurationseconds.md)
- [kMDItemEmailAddresses](coreservices/kmditememailaddresses.md)
- [kMDItemEncodingApplications](coreservices/kmditemencodingapplications.md)
- [kMDItemFinderComment](coreservices/kmditemfindercomment.md)
- [kMDItemFonts](coreservices/kmditemfonts.md)
- [kMDItemHeadline](coreservices/kmditemheadline.md)
- [kMDItemIdentifier](coreservices/kmditemidentifier.md)
- [kMDItemInstantMessageAddresses](coreservices/kmditeminstantmessageaddresses.md)
- [kMDItemInstructions](coreservices/kmditeminstructions.md)
- [kMDItemKeywords](coreservices/kmditemkeywords.md)
- [kMDItemKind](coreservices/kmditemkind.md)
- [kMDItemLanguages](coreservices/kmditemlanguages.md)
- [kMDItemLastUsedDate](coreservices/kmditemlastuseddate.md)
- [kMDItemNumberOfPages](coreservices/kmditemnumberofpages.md)
- [kMDItemOrganizations](coreservices/kmditemorganizations.md)
- [kMDItemPageHeight](coreservices/kmditempageheight.md)
- [kMDItemPageWidth](coreservices/kmditempagewidth.md)
- [kMDItemParticipants](coreservices/kmditemparticipants.md)
- [kMDItemPhoneNumbers](coreservices/kmditemphonenumbers.md)
- [kMDItemProjects](coreservices/kmditemprojects.md)
- [kMDItemPublishers](coreservices/kmditempublishers.md)
- [kMDItemRecipients](coreservices/kmditemrecipients.md)
- [kMDItemRecipientAddresses](coreservices/kmditemrecipientaddresses.md)
- [kMDItemRights](coreservices/kmditemrights.md)
- [kMDItemSecurityMethod](coreservices/kmditemsecuritymethod.md)
- [kMDItemStarRating](coreservices/kmditemstarrating.md)
- [kMDItemStateOrProvince](coreservices/kmditemstateorprovince.md)
- [kMDItemTextContent](coreservices/kmditemtextcontent.md)
- [kMDItemTitle](coreservices/kmditemtitle.md)
- [kMDItemVersion](coreservices/kmditemversion.md)
- [kMDItemWhereFroms](coreservices/kmditemwherefroms.md)
- [kMDItemAuthorEmailAddresses](coreservices/kmditemauthoremailaddresses.md)
- [kMDItemRecipientEmailAddresses](coreservices/kmditemrecipientemailaddresses.md)
- [kMDItemTheme](coreservices/kmditemtheme.md)
- [kMDItemSubject](coreservices/kmditemsubject.md)
- [kMDItemCFBundleIdentifier](coreservices/kmditemcfbundleidentifier.md)
- [kMDItemFSHasCustomIcon](coreservices/kmditemfshascustomicon.md)
- [kMDItemFSIsStationery](coreservices/kmditemfsisstationery.md)
- [kMDItemInformation](coreservices/kmditeminformation.md)
- [kMDItemURL](coreservices/kmditemurl.md)