--- title: System-declared uniform type identifiers framework: uniformtypeidentifiers role: collectionGroup role_heading: API Collection path: uniformtypeidentifiers/system-declared-uniform-type-identifiers --- # System-declared uniform type identifiers Common types that the system declares. ## Overview Overview Uniform type identifiers declare common types for resources an app loads, saves, or opens from other apps. Apps that use proprietary types can define them by using the system’s unified type identifiers as base types. ## Topics ### 3D content - [threeDContent](uniformtypeidentifiers/uttype-swift.struct/threedcontent.md) - [usd](uniformtypeidentifiers/uttype-swift.struct/usd.md) - [usdz](uniformtypeidentifiers/uttype-swift.struct/usdz.md) ### Apple 3D content - [realityFile](uniformtypeidentifiers/uttype-swift.struct/realityfile.md) - [sceneKitScene](uniformtypeidentifiers/uttype-swift.struct/scenekitscene.md) - [arReferenceObject](uniformtypeidentifiers/uttype-swift.struct/arreferenceobject.md) ### Apple file system objects - [directory](uniformtypeidentifiers/uttype-swift.struct/directory.md) - [symbolicLink](uniformtypeidentifiers/uttype-swift.struct/symboliclink.md) - [mountPoint](uniformtypeidentifiers/uttype-swift.struct/mountpoint.md) - [aliasFile](uniformtypeidentifiers/uttype-swift.struct/aliasfile.md) - [folder](uniformtypeidentifiers/uttype-swift.struct/folder.md) - [volume](uniformtypeidentifiers/uttype-swift.struct/volume.md) - [diskImage](uniformtypeidentifiers/uttype-swift.struct/diskimage.md) ### Apple image formats - [heic](uniformtypeidentifiers/uttype-swift.struct/heic.md) - [heif](uniformtypeidentifiers/uttype-swift.struct/heif.md) - [livePhoto](uniformtypeidentifiers/uttype-swift.struct/livephoto.md) ### Apple system types - [framework](uniformtypeidentifiers/uttype-swift.struct/framework.md) - [applicationBundle](uniformtypeidentifiers/uttype-swift.struct/applicationbundle.md) - [applicationExtension](uniformtypeidentifiers/uttype-swift.struct/applicationextension.md) - [spotlightImporter](uniformtypeidentifiers/uttype-swift.struct/spotlightimporter.md) - [quickLookGenerator](uniformtypeidentifiers/uttype-swift.struct/quicklookgenerator.md) - [xpcService](uniformtypeidentifiers/uttype-swift.struct/xpcservice.md) - [systemPreferencesPane](uniformtypeidentifiers/uttype-swift.struct/systempreferencespane.md) ### Application files - [pdf](uniformtypeidentifiers/uttype-swift.struct/pdf.md) - [rtfd](uniformtypeidentifiers/uttype-swift.struct/rtfd.md) - [flatRTFD](uniformtypeidentifiers/uttype-swift.struct/flatrtfd.md) - [epub](uniformtypeidentifiers/uttype-swift.struct/epub.md) ### Audio - [mp3](uniformtypeidentifiers/uttype-swift.struct/mp3.md) - [aiff](uniformtypeidentifiers/uttype-swift.struct/aiff.md) - [wav](uniformtypeidentifiers/uttype-swift.struct/wav.md) - [midi](uniformtypeidentifiers/uttype-swift.struct/midi.md) - [playlist](uniformtypeidentifiers/uttype-swift.struct/playlist.md) - [m3uPlaylist](uniformtypeidentifiers/uttype-swift.struct/m3uplaylist.md) ### Audio and video - [quickTimeMovie](uniformtypeidentifiers/uttype-swift.struct/quicktimemovie.md) - [mpeg](uniformtypeidentifiers/uttype-swift.struct/mpeg.md) - [mpeg2Video](uniformtypeidentifiers/uttype-swift.struct/mpeg2video.md) - [mpeg2TransportStream](uniformtypeidentifiers/uttype-swift.struct/mpeg2transportstream.md) - [mpeg4Movie](uniformtypeidentifiers/uttype-swift.struct/mpeg4movie.md) - [mpeg4Audio](uniformtypeidentifiers/uttype-swift.struct/mpeg4audio.md) - [appleProtectedMPEG4Video](uniformtypeidentifiers/uttype-swift.struct/appleprotectedmpeg4video.md) - [appleProtectedMPEG4Audio](uniformtypeidentifiers/uttype-swift.struct/appleprotectedmpeg4audio.md) - [avi](uniformtypeidentifiers/uttype-swift.struct/avi.md) ### Compiled programming language sources - [assemblyLanguageSource](uniformtypeidentifiers/uttype-swift.struct/assemblylanguagesource.md) - [cHeader](uniformtypeidentifiers/uttype-swift.struct/cheader.md) - [cSource](uniformtypeidentifiers/uttype-swift.struct/csource.md) - [cPlusPlusHeader](uniformtypeidentifiers/uttype-swift.struct/cplusplusheader.md) - [cPlusPlusSource](uniformtypeidentifiers/uttype-swift.struct/cplusplussource.md) - [objectiveCPlusPlusSource](uniformtypeidentifiers/uttype-swift.struct/objectivecplusplussource.md) - [objectiveCSource](uniformtypeidentifiers/uttype-swift.struct/objectivecsource.md) - [swiftSource](uniformtypeidentifiers/uttype-swift.struct/swiftsource.md) ### Compressed archives - [archive](uniformtypeidentifiers/uttype-swift.struct/archive.md) - [zip](uniformtypeidentifiers/uttype-swift.struct/zip.md) - [gzip](uniformtypeidentifiers/uttype-swift.struct/gzip.md) - [bz2](uniformtypeidentifiers/uttype-swift.struct/bz2.md) - [appleArchive](uniformtypeidentifiers/uttype-swift.struct/applearchive.md) ### Cryptographic files - [pkcs12](uniformtypeidentifiers/uttype-swift.struct/pkcs12.md) - [x509Certificate](uniformtypeidentifiers/uttype-swift.struct/x509certificate.md) ### Data interchange formats - [delimitedText](uniformtypeidentifiers/uttype-swift.struct/delimitedtext.md) - [commaSeparatedText](uniformtypeidentifiers/uttype-swift.struct/commaseparatedtext.md) - [tabSeparatedText](uniformtypeidentifiers/uttype-swift.struct/tabseparatedtext.md) - [utf8TabSeparatedText](uniformtypeidentifiers/uttype-swift.struct/utf8tabseparatedtext.md) - [rtf](uniformtypeidentifiers/uttype-swift.struct/rtf.md) - [xml](uniformtypeidentifiers/uttype-swift.struct/xml.md) - [yaml](uniformtypeidentifiers/uttype-swift.struct/yaml.md) - [json](uniformtypeidentifiers/uttype-swift.struct/json.md) - [vCard](uniformtypeidentifiers/uttype-swift.struct/vcard.md) ### Executables - [executable](uniformtypeidentifiers/uttype-swift.struct/executable.md) - [unixExecutable](uniformtypeidentifiers/uttype-swift.struct/unixexecutable.md) - [exe](uniformtypeidentifiers/uttype-swift.struct/exe.md) ### Icon images - [ico](uniformtypeidentifiers/uttype-swift.struct/ico.md) - [icns](uniformtypeidentifiers/uttype-swift.struct/icns.md) ### Images - [png](uniformtypeidentifiers/uttype-swift.struct/png.md) - [gif](uniformtypeidentifiers/uttype-swift.struct/gif.md) - [jpeg](uniformtypeidentifiers/uttype-swift.struct/jpeg.md) - [webP](uniformtypeidentifiers/uttype-swift.struct/webp.md) - [tiff](uniformtypeidentifiers/uttype-swift.struct/tiff.md) - [bmp](uniformtypeidentifiers/uttype-swift.struct/bmp.md) - [svg](uniformtypeidentifiers/uttype-swift.struct/svg.md) - [rawImage](uniformtypeidentifiers/uttype-swift.struct/rawimage.md) ### Internet-specific - [html](uniformtypeidentifiers/uttype-swift.struct/html.md) - [webArchive](uniformtypeidentifiers/uttype-swift.struct/webarchive.md) - [internetLocation](uniformtypeidentifiers/uttype-swift.struct/internetlocation.md) - [internetShortcut](uniformtypeidentifiers/uttype-swift.struct/internetshortcut.md) ### Property lists - [propertyList](uniformtypeidentifiers/uttype-swift.struct/propertylist.md) - [xmlPropertyList](uniformtypeidentifiers/uttype-swift.struct/xmlpropertylist.md) - [binaryPropertyList](uniformtypeidentifiers/uttype-swift.struct/binarypropertylist.md) ### Shazam - [shazamSignature](uniformtypeidentifiers/uttype-swift.struct/shazamsignature.md) - [shazamCustomCatalog](uniformtypeidentifiers/uttype-swift.struct/shazamcustomcatalog.md) ### Scripted programming language sources - [script](uniformtypeidentifiers/uttype-swift.struct/script.md) - [appleScript](uniformtypeidentifiers/uttype-swift.struct/applescript.md) - [javaScript](uniformtypeidentifiers/uttype-swift.struct/javascript.md) - [osaScript](uniformtypeidentifiers/uttype-swift.struct/osascript.md) - [osaScriptBundle](uniformtypeidentifiers/uttype-swift.struct/osascriptbundle.md) - [makefile](uniformtypeidentifiers/uttype-swift.struct/makefile.md) - [shellScript](uniformtypeidentifiers/uttype-swift.struct/shellscript.md) - [pythonScript](uniformtypeidentifiers/uttype-swift.struct/pythonscript.md) - [rubyScript](uniformtypeidentifiers/uttype-swift.struct/rubyscript.md) - [perlScript](uniformtypeidentifiers/uttype-swift.struct/perlscript.md) - [phpScript](uniformtypeidentifiers/uttype-swift.struct/phpscript.md) ### Text files - [text](uniformtypeidentifiers/uttype-swift.struct/text.md) - [plainText](uniformtypeidentifiers/uttype-swift.struct/plaintext.md) - [utf8PlainText](uniformtypeidentifiers/uttype-swift.struct/utf8plaintext.md) - [utf16PlainText](uniformtypeidentifiers/uttype-swift.struct/utf16plaintext.md) - [utf16ExternalPlainText](uniformtypeidentifiers/uttype-swift.struct/utf16externalplaintext.md) ### URLs - [url](uniformtypeidentifiers/uttype-swift.struct/url.md) - [fileURL](uniformtypeidentifiers/uttype-swift.struct/fileurl.md) - [urlBookmarkData](uniformtypeidentifiers/uttype-swift.struct/urlbookmarkdata.md) ### Apple system base types - [item](uniformtypeidentifiers/uttype-swift.struct/item.md) - [content](uniformtypeidentifiers/uttype-swift.struct/content.md) - [compositeContent](uniformtypeidentifiers/uttype-swift.struct/compositecontent.md) - [data](uniformtypeidentifiers/uttype-swift.struct/data.md) - [resolvable](uniformtypeidentifiers/uttype-swift.struct/resolvable.md) - [package](uniformtypeidentifiers/uttype-swift.struct/package.md) - [bundle](uniformtypeidentifiers/uttype-swift.struct/bundle.md) - [pluginBundle](uniformtypeidentifiers/uttype-swift.struct/pluginbundle.md) - [application](uniformtypeidentifiers/uttype-swift.struct/application.md) - [sourceCode](uniformtypeidentifiers/uttype-swift.struct/sourcecode.md) - [bookmark](uniformtypeidentifiers/uttype-swift.struct/bookmark.md) - [log](uniformtypeidentifiers/uttype-swift.struct/log.md) ### Application base types - [spreadsheet](uniformtypeidentifiers/uttype-swift.struct/spreadsheet.md) - [presentation](uniformtypeidentifiers/uttype-swift.struct/presentation.md) - [database](uniformtypeidentifiers/uttype-swift.struct/database.md) - [message](uniformtypeidentifiers/uttype-swift.struct/message.md) - [contact](uniformtypeidentifiers/uttype-swift.struct/contact.md) - [calendarEvent](uniformtypeidentifiers/uttype-swift.struct/calendarevent.md) - [toDoItem](uniformtypeidentifiers/uttype-swift.struct/todoitem.md) - [emailMessage](uniformtypeidentifiers/uttype-swift.struct/emailmessage.md) - [font](uniformtypeidentifiers/uttype-swift.struct/font.md) ### Image, audio, and video base types - [image](uniformtypeidentifiers/uttype-swift.struct/image.md) - [audio](uniformtypeidentifiers/uttype-swift.struct/audio.md) - [audiovisualContent](uniformtypeidentifiers/uttype-swift.struct/audiovisualcontent.md) - [movie](uniformtypeidentifiers/uttype-swift.struct/movie.md) - [video](uniformtypeidentifiers/uttype-swift.struct/video.md) ### Tag classes - [filenameExtension](uniformtypeidentifiers/uttagclass/filenameextension.md) - [mimeType](uniformtypeidentifiers/uttagclass/mimetype.md) ## See Also ### Essentials - [Defining file and data types for your app](uniformtypeidentifiers/defining-file-and-data-types-for-your-app.md)