1# Core File Kit API Reference 2 3- ArkTS APIs 4 - [@ohos.application.BackupExtensionAbility (BackupExtensionAbility)](js-apis-application-backupExtensionAbility.md) 5 - [@ohos.file.cloudSync (Device-Cloud Synchronization)](js-apis-file-cloudsync.md) 6 - [@ohos.file.environment (Directory Environment Capability)](js-apis-file-environment.md) 7 - [@ohos.file.fileuri (File URI)](js-apis-file-fileuri.md) 8 - [@ohos.file.fs (File Management)](js-apis-file-fs.md) 9 - [@ohos.file.hash (File Hash Processing)](js-apis-file-hash.md) 10 - [@ohos.file.picker (Picker)](js-apis-file-picker.md) 11 - [@ohos.file.securityLabel (Data Label)](js-apis-file-securityLabel.md) 12 - [@ohos.file.statvfs (File System Space Statistics)](js-apis-file-statvfs.md) 13 - [@ohos.file.storageStatistics (Application Storage Statistics)](js-apis-file-storage-statistics.md) 14 - [@ohos.fileshare (File Sharing)](js-apis-fileShare.md) 15 - [@ohos.file.backup (Backup and Restore) (System API)](js-apis-file-backup-sys.md) 16 - [@ohos.file.cloudSync (Device-Cloud Synchronization) (System API)] (js-apis-file-cloudsync-sys.md) 17 - [@ohos.file.cloudSyncManager (Device-Cloud Synchronization Management) (System API)](js-apis-file-cloudsyncmanager-sys.md) 18 - [@ohos.file.environment (Directory Environment Capability) (System API)](js-apis-file-environment-sys.md) 19 - [@ohos.file.fileAccess (User File Access and Management) (System API)](js-apis-fileAccess-sys.md) 20 - [@ohos.file.fileExtensionInfo (User File Access and Management Attribute Information) (System API)](js-apis-fileExtensionInfo-sys.md) 21 - [@ohos.file.recent (Latest Access List) (System API)](js-apis-file-recent-sys.md) 22 - [@ohos.file.storageStatistics (Application Space Statistics) (System API)](js-apis-file-storage-statistics-sys.md) 23 - [@ohos.file.trash (Trash) (System API)](js-apis-file-trash-sys.md) 24 - [@ohos.file.volumeManager (volume Management) (System API)] (js-apis-file-volumemanager-sys.md) 25 - [@ohos.filemanagement.userFileManager (User Data Management) (System API)](js-apis-userFileManager-sys.md) 26 - [@ohos.fileshare (File Sharing) (System API)](js-apis-fileShare-sys.md) 27 - APIs No Longer Maintained 28 - [@ohos.document (File Operation)](js-apis-document.md) 29 - [@ohos.fileio (File Management)](js-apis-fileio.md) 30 - [@ohos.statfs (statfs)](js-apis-statfs.md) 31 - [@system.file (File Storage)](js-apis-system-file.md) 32- Error Codes 33 - [File Management Error Codes] (errorcode-filemanagement.md) 34