## 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
> 0x0423 | ExifInfo2? | N |
> 0x0424 | XMP | - | --> XMP Tags
> 0x0425 | IPTCDigest | string! | (when writing, a special value of "new" represents the new IPTC digest of the output file, or deletes this tag if no IPTC exists)
> 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 Jan 26, 2009

<-- ExifTool Tag Names