Photoshop Tags

Photoshop tags are found in PSD 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 0x0424 XMP - --> XMP Tags 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