Field Type Exiftool Adobe XMP DCMI
Aperture decimal ApertureValue, Aperture
FNumber decimal FNumber
FPS decimal VideoFrameRate, VideoAvgFrameRate
Duration duration Duration, MediaDuration, TrackDuration
Flash flag FlashFired
Keywords list Keywords
Altitude number GlobalAltitude, GPSAltitude
FocalLength number FocalLength
Frames number FrameCount
Height number PixelYDimension, ImageHeight, ImageLength, ExifImageHeight, SourceImageHeight
ImageType number HDRImageType
Iso number ISO
Rotation number Rotation
Width number PixelXDimension, ImageWidth, ExifImageWidth, SourceImageWidth
Artist text Artist, Creator, OwnerName, Owner Creator
CameraMake text CameraMake, Make Make
CameraModel text CameraModel, Model Model
CameraOwner text OwnerName
CameraSerial text SerialNumber
Codec text CompressorID, FileType
ColorProfile text ICCProfileName, ProfileDescription
Copyright text Rights, Copyright, WebStatement Rights, Rights.Alt
Description text Description Description, Description.Alt
DocumentID text BurstUUID, MediaGroupUUID, ImageUniqueID, OriginalDocumentID, DocumentID
Exposure text ExposureTime, ShutterSpeedValue, ShutterSpeed, TargetExposureTime
FileName text FileName
GPSLatitude text GPSLatitude
GPSLongitude text GPSLongitude
GPSPosition text GPSPosition
InstanceID text InstanceID, DocumentID
LensMake text LensMake
LensModel text Lens, LensModel LensModel
License text UsageTerms, License
Notes text Comment
Projection text ProjectionType
Software text Software, HistorySoftwareAgent, ProcessingSoftware
Subject text Subject, PersonInImage, ObjectName, HierarchicalSubject, CatalogSets Subject
Title text Title dc:title title, title.Alt
TakenAt timestamp DateTimeOriginal, CreationDate, CreateDate, MediaCreateDate, ContentCreateDate, DateTimeDigitized, DateTime, SubSecDateTimeOriginal, SubSecCreateDate DateCreated
TakenAtLocal timestamp DateTimeOriginal, CreationDate, CreateDate, MediaCreateDate, ContentCreateDate, DateTimeDigitized, DateTime, SubSecDateTimeOriginal, SubSecCreateDate
TakenGps timestamp GPSDateTime, GPSDateStamp

Metadata Tags by Namespace

Namespace Documentation
Exiftool Exif https://exiftool.org/TagNames/EXIF.html
Exiftool XMP https://exiftool.org/TagNames/XMP.html
Adobe XMP https://docs.photoprism.app/developer-guide/metadata/xmp/#specification
Dublin Core (DCMI) https://www.dublincore.org/specifications/dublin-core/dcmi-terms/
IPTC Photo Metadata https://iptc.org/standards/photo-metadata/iptc-standard/

Original media and sidecar files are scanned for Exif and XMP data, as well as proprietary metadata, including Google Photos JSON. The combined information is then normalized, merged, and enriched with additional information.