Photoshop Tags

Photoshop tags are found in PSD and PSB files, as well as inside embedded Photoshop information in many other file types (JPEG, TIFF, PDF, PNG to name a few).

Many Photoshop tags are marked as Unknown (indicated by a question mark after the tag name) because the information they provide is not very useful under normal circumstances [and because Adobe denied my application for their file format documentation -- apparently open source software is too big a concept for them]. These unknown tags are not extracted unless the Unknown (-u) option is used.

Tag ID Tag Name Writable Values / Notes 0x03e8 Photoshop2Info? N   0x03e9 MacintoshPrintInfo? N   0x03ea XMLData? N   0x03eb Photoshop2ColorTable? N   0x03ed ResolutionInfo - --> Photoshop Resolution Tags 0x03ee AlphaChannelsNames N   0x03ef DisplayInfo? N   0x03f0 PStringCaption? N   0x03f1 BorderInformation? N   0x03f2 BackgroundColor? N   0x03f3 PrintFlags? N   0x03f4 BW_HalftoningInfo? N   0x03f5 ColorHalftoningInfo? N   0x03f6 DuotoneHalftoningInfo? N   0x03f7 BW_TransferFunc? N   0x03f8 ColorTransferFuncs? N   0x03f9 DuotoneTransferFuncs? N   0x03fa DuotoneImageInfo? N   0x03fb EffectiveBW? N   0x03fc ObsoletePhotoshopTag1? N   0x03fd EPSOptions? N   0x03fe QuickMaskInfo? N   0x03ff ObsoletePhotoshopTag2? N   0x0400 LayerStateInfo? N   0x0401 WorkingPath? N   0x0402 LayersGroupInfo? N   0x0403 ObsoletePhotoshopTag3? N   0x0404 IPTCData - --> IPTC Tags 0x0405 RawImageMode? N   0x0406 JPEG_Quality - --> Photoshop JPEG_Quality Tags 0x0408 GridGuidesInfo? N   0x0409 PhotoshopBGRThumbnail N (this is a JPEG image, but in BGR format instead of RGB) 0x040a CopyrightFlag int8u 0 = False 1 = True 0x040b URL string   0x040c PhotoshopThumbnail N   0x040d GlobalAngle int32u   0x040e ColorSamplersResource? N   0x040f ICC_Profile - --> ICC_Profile Tags 0x0410 Watermark? N   0x0411 ICC_Untagged? N   0x0412 EffectsVisible? N   0x0413 SpotHalftone? N   0x0414 IDsBaseValue? N   0x0415 UnicodeAlphaNames? N   0x0416 IndexedColourTableCount? N   0x0417 TransparentIndex? N   0x0419 GlobalAltitude int32u   0x041a Slices? N   0x041b WorkflowURL? N   0x041c JumpToXPEP? N   0x041d AlphaIdentifiers? N   0x041e URL_List? N   0x0421 VersionInfo? N   0x0422 EXIFInfo - --> EXIF Tags 0x0423 ExifInfo2? N   0x0424 XMP - --> XMP Tags 0x0425 IPTCDigest string! (when writing, special values of "new" and "old" represent the digests of the IPTC from the edited and original files respectively, and are undefined if the IPTC does not exist in the respective file) 0x0426 PrintScale? N   0x0428 PixelAspectRatio? N   0x0429 LayerComps? N   0x042a AlternateDuotoneColors? N   0x042b AlternateSpotColors? N   0x0bb7 ClippingPathName N   0x2710 PrintFlagsInfo? N

Photoshop Resolution Tags

Index Tag Name Writable Values / Notes 0 XResolution int32u   2 DisplayedUnitsX int16u 1 = inches 2 = cm 4 YResolution int32u   6 DisplayedUnitsY int16u 1 = inches 2 = cm

Photoshop JPEG_Quality Tags

Index Tag Name Writable Values / Notes 0 PhotoshopQuality int16s   1 PhotoshopFormat N 0 = Standard 1 = Optimised 257 = Progressive 2 ProgressiveScans N 1 = 3 Scans 2 = 4 Scans 3 = 5 Scans

Photoshop Header Tags

This information is found in the PSD file header.

Index Tag Name Writable Values / Notes 6 NumChannels N   7 ImageHeight N   9 ImageWidth N   11 BitDepth N   12 ColorMode N 0 = Bitmap 1 = Grayscale 2 = Indexed 3 = RGB 4 = CMYK 7 = Multichannel 8 = Duotone 9 = Lab

<-- ExifTool Tag Names