---
title: Common File System Resource Keys
framework: corefoundation
role: collectionGroup
role_heading: API Collection
path: corefoundation/common-file-system-resource-keys
---

# Common File System Resource Keys

Keys that are applicable to file system URLs.

## Topics

### Constants

- [kCFURLNameKey](corefoundation/kcfurlnamekey.md)
- [kCFURLLocalizedNameKey](corefoundation/kcfurllocalizednamekey.md)
- [kCFURLPathKey](corefoundation/kcfurlpathkey.md)
- [kCFURLIsRegularFileKey](corefoundation/kcfurlisregularfilekey.md)
- [kCFURLIsDirectoryKey](corefoundation/kcfurlisdirectorykey.md)
- [kCFURLIsSymbolicLinkKey](corefoundation/kcfurlissymboliclinkkey.md)
- [kCFURLIsVolumeKey](corefoundation/kcfurlisvolumekey.md)
- [kCFURLIsPackageKey](corefoundation/kcfurlispackagekey.md)
- [kCFURLIsSystemImmutableKey](corefoundation/kcfurlissystemimmutablekey.md)
- [kCFURLIsUserImmutableKey](corefoundation/kcfurlisuserimmutablekey.md)
- [kCFURLIsHiddenKey](corefoundation/kcfurlishiddenkey.md)
- [kCFURLHasHiddenExtensionKey](corefoundation/kcfurlhashiddenextensionkey.md)
- [kCFURLCreationDateKey](corefoundation/kcfurlcreationdatekey.md)
- [kCFURLContentAccessDateKey](corefoundation/kcfurlcontentaccessdatekey.md)
- [kCFURLContentModificationDateKey](corefoundation/kcfurlcontentmodificationdatekey.md)
- [kCFURLAttributeModificationDateKey](corefoundation/kcfurlattributemodificationdatekey.md)
- [kCFURLLinkCountKey](corefoundation/kcfurllinkcountkey.md)
- [kCFURLParentDirectoryURLKey](corefoundation/kcfurlparentdirectoryurlkey.md)
- [kCFURLVolumeURLKey](corefoundation/kcfurlvolumeurlkey.md)
- [kCFURLTypeIdentifierKey](corefoundation/kcfurltypeidentifierkey.md)
- [kCFURLLocalizedTypeDescriptionKey](corefoundation/kcfurllocalizedtypedescriptionkey.md)
- [kCFURLLabelNumberKey](corefoundation/kcfurllabelnumberkey.md)
- [kCFURLLabelColorKey](corefoundation/kcfurllabelcolorkey.md)
- [kCFURLLocalizedLabelKey](corefoundation/kcfurllocalizedlabelkey.md)
- [kCFURLEffectiveIconKey](corefoundation/kcfurleffectiveiconkey.md)
- [kCFURLCustomIconKey](corefoundation/kcfurlcustomiconkey.md)
- [kCFURLFileResourceIdentifierKey](corefoundation/kcfurlfileresourceidentifierkey.md)
- [kCFURLVolumeIdentifierKey](corefoundation/kcfurlvolumeidentifierkey.md)
- [kCFURLPreferredIOBlockSizeKey](corefoundation/kcfurlpreferredioblocksizekey.md)
- [kCFURLIsReadableKey](corefoundation/kcfurlisreadablekey.md)
- [kCFURLIsWritableKey](corefoundation/kcfurliswritablekey.md)
- [kCFURLIsExecutableKey](corefoundation/kcfurlisexecutablekey.md)
- [kCFURLFileSecurityKey](corefoundation/kcfurlfilesecuritykey.md)
- [kCFURLIsExcludedFromBackupKey](corefoundation/kcfurlisexcludedfrombackupkey.md)
- [kCFURLFileResourceTypeKey](corefoundation/kcfurlfileresourcetypekey.md)

## See Also

### File System Constants

- [File Resource Types](corefoundation/file-resource-types.md)
- [File Property Keys](corefoundation/file-property-keys.md)
- [iCloud Constants](corefoundation/icloud-constants.md)
- [Volume Property Keys](corefoundation/volume-property-keys.md)
- [CFError userInfo Dictionary Keys](corefoundation/cferror-userinfo-dictionary-keys.md)