Info.plist for the app. I tried to add UTExportedTypeDeclarations for Fuji RAW Image to see if I can use my own UTI, but it makes no difference. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>UTExportedTypeDeclarations</key> <array> <dict> <key>UTTypeIdentifier</key> <string>com.anogeissus.raf</string> <key>UTTypeDescription</key> <string>Fuji RAW Image</string> <key>UTTypeConformsTo</key> <array> <string>public.image</string> <string>com.fuji.raw-image</string> </array> <key>UTTypeTagSpecification</key> <dict> <key>public.filename-extension</key> <array> <string>raf</string> </array> <key>public.mime-type</key> <string>image/x-fuji-raf</string> </dict> </dict> </array> <key>CFBundleDocumentTypes</key> <array> <dict> <key>CFBundleTypeExtensions</key> <array> <string>raf</string> </array> <key>CFBundleTypeName</key> <string>Fuji Compressed RAW Image</string> <key>LSItemContentTypes</key> <array> <string>com.anogeissus.raf</string> <string>com.fuji.raw-image</string> </array> <key>LSHandlerRank</key> <string>Owner</string> <key>CFBundleTypeRole</key> <string>Viewer</string> </dict> <dict> <key>CFBundleTypeExtensions</key> <array> <string>x3f</string> </array> <key>CFBundleTypeName</key> <string>Sigma X3F RAW Image</string> <key>LSItemContentTypes</key> <array> <string>com.anogeissus.x3f</string> </array> <key>LSHandlerRank</key> <string>Owner</string> <key>CFBundleTypeRole</key> <string>Viewer</string> </dict> <dict> <key>CFBundleTypeExtensions</key> <array> <string>arq</string> </array> <key>CFBundleTypeName</key> <string>Sony ARQ RAW Image</string> <key>LSItemContentTypes</key> <array> <string>com.anogeissus.arq</string> </array> <key>LSHandlerRank</key> <string>Owner</string> <key>CFBundleTypeRole</key> <string>Viewer</string> </dict> </array> <key>UIApplicationSceneManifest</key> <dict> <key>UIApplicationSupportsMultipleScenes</key> <false/> <key>UISceneConfigurations</key> <dict> <key>UIWindowSceneSessionRoleApplication</key> <array> <dict> <key>UISceneConfigurationName</key> <string>Default Configuration</string> <key>UISceneDelegateClassName</key> <string>SceneDelegate</string> </dict> </array> </dict> </dict> <key>UTImportedTypeDeclarations</key> <array> <dict> <key>UTTypeConformsTo</key> <array> <string>com.fuji.raw-image</string> <string>public.image</string> </array> <key>UTTypeDescription</key> <string>Fuji Compressed RAW Image</string> <key>UTTypeIdentifier</key> <string>com.anogeissus.raf</string> <key>UTTypeTagSpecification</key> <dict> <key>public.filename-extension</key> <array> <string>raf</string> </array> <key>public.mime-type</key> <string>image/x-fuji-raf</string> </dict> </dict> <dict> <key>UTTypeConformsTo</key> <array> <string>public.data</string> <string>public.image</string> </array> <key>UTTypeDescription</key> <string>Sigma X3F RAW Image</string> <key>UTTypeIdentifier</key> <string>com.anogeissus.x3f</string> <key>UTTypeTagSpecification</key> <dict> <key>public.filename-extension</key> <array> <string>x3f</string> </array> <key>public.mime-type</key> <string>image/x-sigma-x3f</string> </dict> </dict> <dict> <key>UTTypeConformsTo</key> <array> <string>public.data</string> <string>public.image</string> </array> <key>UTTypeDescription</key> <string>Sony ARQ RAW Image</string> <key>UTTypeIdentifier</key> <string>com.anogeissus.arq</string> <key>UTTypeTagSpecification</key> <dict> <key>public.filename-extension</key> <array> <string>arq</string> </array> <key>public.mime-type</key> <string>image/x-sony-arq</string> </dict> </dict> </array> <key>LSSupportsOpeningDocumentsInPlace</key> <true/> </dict> </plist>

Info.plist for the Quick Look extension: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>NSExtension</key> <dict> <key>NSExtensionAttributes</key> <dict> <key>QLSupportedContentTypes</key> <array> <string>com.nikon.raw-image</string> <string>com.canon.cr3-raw-image</string> <string>com.anogeissus.raf</string> <string>com.fuji.raw-image</string> <string>com.panasonic.rw2-raw-image</string> <string>com.olympus.raw-image</string> <string>com.sony.arw-raw-image</string> <string>com.adobe.raw-image</string> <string>com.anogeissus.x3f</string> <string>com.anogeissus.arq</string> </array> <key>QLThumbnailMinimumSize</key> <integer>16</integer> </dict> <key>NSExtensionPointIdentifier</key> <string>com.apple.quicklook.preview</string> <key>NSExtensionPrincipalClass</key> <string>PreviewViewController</string> </dict> </dict> </plist>