## 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

(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Apr 15, 2010

<-- ExifTool Tag Names