4

Signature: '8BIM'

2

Unique identifier for the resource. Image resource IDs contains a list of resource IDs used by Photoshop.

Variable

Name: Pascal string, padded to make the size even (a null name consists of two bytes of 0)

4

Actual size of resource data that follows

Variable

The resource data, described in the sections on the individual resource types. It is padded to make the size even.

0x03E8

1000

(Obsolete--Photoshop 2.0 only ) Contains five 2-byte values: number of channels, rows, columns, depth, and mode

0x03E9

1001

Macintosh print manager print info record

0x03EA

1002

Macintosh page format information. No longer read by Photoshop. (Obsolete)

0x03EB

1003

(Obsolete--Photoshop 2.0 only ) Indexed color table

0x03ED

1005

ResolutionInfo structure. See Appendix A in Photoshop API Guide.pdf.

0x03EE

1006

Names of the alpha channels as a series of Pascal strings.

0x03EF

1007

(Obsolete) See ID 1077DisplayInfo structure. See Appendix A in Photoshop API Guide.pdf.

0x03F0

1008

The caption as a Pascal string.

0x03F1

1009

Border information. Contains a fixed number (2 bytes real, 2 bytes fraction) for the border width, and 2 bytes for border units (1 = inches, 2 = cm, 3 = points, 4 = picas, 5 = columns).

0x03F2

1010

Background color. See See Color structure.

0x03F3

1011

Print flags. A series of one-byte boolean values (see Page Setup dialog): labels, crop marks, color bars, registration marks, negative, flip, interpolate, caption, print flags.

0x03F4

1012

Grayscale and multichannel halftoning information

0x03F5

1013

Color halftoning information

0x03F6

1014

Duotone halftoning information

0x03F7

1015

Grayscale and multichannel transfer function

0x03F8

1016

Color transfer functions

0x03F9

1017

Duotone transfer functions

0x03FA

1018

Duotone image information

0x03FB

1019

Two bytes for the effective black and white values for the dot range

0x03FC

1020

(Obsolete)

0x03FD

1021

EPS options

0x03FE

1022

Quick Mask information. 2 bytes containing Quick Mask channel ID; 1- byte boolean indicating whether the mask was initially empty.

0x03FF

1023

(Obsolete)

0x0400

1024

Layer state information. 2 bytes containing the index of target layer (0 = bottom layer).

0x0401

1025

Working path (not saved). See See Path resource format.

0x0402

1026

Layers group information. 2 bytes per layer containing a group ID for the dragging groups. Layers in a group have the same group ID.

0x0403

1027

(Obsolete)

0x0404

1028

IPTC-NAA record. Contains the File Info... information. See the documentation in the IPTC folder of the Documentation folder.

0x0405

1029

Image mode for raw format files

0x0406

1030

JPEG quality. Private.

0x0408

1032

(Photoshop 4.0) Grid and guides information. See See Grid and guides resource format.

0x0409

1033

(Photoshop 4.0) Thumbnail resource for Photoshop 4.0 only. See See Thumbnail resource format.

0x040A

1034

(Photoshop 4.0) Copyright flag. Boolean indicating whether image is copyrighted. Can be set via Property suite or by user in File Info...

0x040B

1035

(Photoshop 4.0) URL. Handle of a text string with uniform resource locator. Can be set via Property suite or by user in File Info...

0x040C

1036

(Photoshop 5.0) Thumbnail resource (supersedes resource 1033). See See Thumbnail resource format.

0x040D

1037

(Photoshop 5.0) Global Angle. 4 bytes that contain an integer between 0 and 359, which is the global lighting angle for effects layer. If not present, assumed to be 30.

0x040E

1038

(Obsolete) See ID 1073 below. (Photoshop 5.0) Color samplers resource. See See Color samplers resource format.

0x040F

1039

(Photoshop 5.0) ICC Profile. The raw bytes of an ICC (International Color Consortium) format profile. See ICC1v42_2006-05.pdf in the Documentation folder and icProfileHeader.h in Sample Code\Common\Includes .

0x0410

1040

(Photoshop 5.0) Watermark. One byte.

0x0411

1041

(Photoshop 5.0) ICC Untagged Profile. 1 byte that disables any assumed profile handling when opening the file. 1 = intentionally untagged.

0x0412

1042

(Photoshop 5.0) Effects visible. 1-byte global flag to show/hide all the effects layer. Only present when they are hidden.

0x0413

1043

(Photoshop 5.0) Spot Halftone. 4 bytes for version, 4 bytes for length, and the variable length data.

0x0414

1044

(Photoshop 5.0) Document-specific IDs seed number. 4 bytes: Base value, starting at which layer IDs will be generated (or a greater value if existing IDs already exceed it). Its purpose is to avoid the case where we add layers, flatten, save, open, and then add more layers that end up with the same IDs as the first set.

0x0415

1045

(Photoshop 5.0) Unicode Alpha Names. Unicode string

0x0416

1046

(Photoshop 6.0) Indexed Color Table Count. 2 bytes for the number of colors in table that are actually defined

0x0417

1047

(Photoshop 6.0) Transparency Index. 2 bytes for the index of transparent color, if any.

0x0419

1049

(Photoshop 6.0) Global Altitude. 4 byte entry for altitude

0x041A

1050

(Photoshop 6.0) Slices. See See Slices resource format.

0x041B

1051

(Photoshop 6.0) Workflow URL. Unicode string

0x041C

1052

(Photoshop 6.0) Jump To XPEP. 2 bytes major version, 2 bytes minor version, 4 bytes count. Following is repeated for count: 4 bytes block size, 4 bytes key, if key = 'jtDd' , then next is a Boolean for the dirty flag; otherwise it's a 4 byte entry for the mod date.

0x041D

1053

(Photoshop 6.0) Alpha Identifiers. 4 bytes of length, followed by 4 bytes each for every alpha identifier.

0x041E

1054

(Photoshop 6.0) URL List. 4 byte count of URLs, followed by 4 byte long, 4 byte ID, and Unicode string for each count.

0x0421

1057

(Photoshop 6.0) Version Info. 4 bytes version, 1 byte hasRealMergedData , Unicode string: writer name, Unicode string: reader name, 4 bytes file version.

0x0422

1058

(Photoshop 7.0) EXIF data 1.

0x0423

1059

(Photoshop 7.0) EXIF data 3.

0x0424

1060

(Photoshop 7.0) XMP metadata. File info as XML description.

0x0425

1061

(Photoshop 7.0) Caption digest. 16 bytes: RSA Data Security, MD5 message-digest algorithm

0x0426

1062

(Photoshop 7.0) Print scale. 2 bytes style (0 = centered, 1 = size to fit, 2 = user defined). 4 bytes x location (floating point). 4 bytes y location (floating point). 4 bytes scale (floating point)

0x0428

1064

(Photoshop CS) Pixel Aspect Ratio. 4 bytes (version = 1 or 2), 8 bytes double, x / y of a pixel. Version 2, attempting to correct values for NTSC and PAL, previously off by a factor of approx. 5%.

0x0429

1065

(Photoshop CS) Layer Comps. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure)

0x042A

1066

(Photoshop CS) Alternate Duotone Colors. 2 bytes (version = 1), 2 bytes count, following is repeated for each count: [ Color: 2 bytes for space followed by 4 * 2 byte color component ], following this is another 2 byte count, usually 256, followed by Lab colors one byte each for L, a, b. This resource is not read or used by Photoshop.

0x042B

1067

(Photoshop CS)Alternate Spot Colors. 2 bytes (version = 1), 2 bytes channel count, following is repeated for each count: 4 bytes channel ID, Color: 2 bytes for space followed by 4 * 2 byte color component. This resource is not read or used by Photoshop.

0x042D

1069

(Photoshop CS2) Layer Selection ID(s). 2 bytes count, following is repeated for each count: 4 bytes layer ID

0x042E

1070

(Photoshop CS2) HDR Toning information

0x042F

1071

(Photoshop CS2) Print info

0x0430

1072

(Photoshop CS2) Layer Group(s) Enabled ID. 1 byte for each layer in the document, repeated by length of the resource. NOTE: Layer groups have start and end markers

0x0431

1073

(Photoshop CS3) Color samplers resource. Also see ID 1038 for old format. See See Color samplers resource format.

0x0432

1074

(Photoshop CS3) Measurement Scale. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure)

0x0433

1075

(Photoshop CS3) Timeline Information. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure)

0x0434

1076

(Photoshop CS3) Sheet Disclosure. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure)

0x0435

1077

(Photoshop CS3) DisplayInfo structure to support floating point clors. Also see ID 1007. See Appendix A in Photoshop API Guide.pdf .

0x0436

1078

(Photoshop CS3) Onion Skins. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure)

0x0438

1080

(Photoshop CS4) Count Information. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure) Information about the count in the document. See the Count Tool.

0x043A

1082

(Photoshop CS5) Print Information. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure) Information about the current print settings in the document. The color management options.

0x043B

1083

(Photoshop CS5) Print Style. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure) Information about the current print style in the document. The printing marks, labels, ornaments, etc.

0x043C

1084

(Photoshop CS5) Macintosh NSPrintInfo. Variable OS specific info for Macintosh. NSPrintInfo. It is recommened that you do not interpret or use this data.

0x043D

1085

(Photoshop CS5) Windows DEVMODE. Variable OS specific info for Windows. DEVMODE. It is recommened that you do not interpret or use this data.

0x043E

1086

(Photoshop CS6) Auto Save File Path. Unicode string. It is recommened that you do not interpret or use this data.

0x043F

1087

(Photoshop CS6) Auto Save Format. Unicode string. It is recommened that you do not interpret or use this data.

0x0440

1088

(Photoshop CC) Path Selection State. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure) Information about the current path selection state.

0x07D0-0x0BB6

2000-2997

Path Information (saved paths). See See Path resource format.

0x0BB7

2999

Name of clipping path. See See Path resource format.

0x0BB8

3000

(Photoshop CC) Origin Path Info. 4 bytes (descriptor version = 16), Descriptor (see See Descriptor structure) Information about the origin path data.

0x0FA0-0x1387

4000-4999

Plug-In resource(s). Resources added by a plug-in. See the plug-in API found in the SDK documentation

0x1B58

7000

Image Ready variables. XML representation of variables definition

0x1B59

7001

Image Ready data sets

0x1B5A

7002

Image Ready default selected state

0x1B5B

7003

Image Ready 7 rollover expanded state

0x1B5C

7004

Image Ready rollover expanded state

0x1B5D

7005

Image Ready save layer settings

0x1B5E

7006

Image Ready version

0x1F40

8000

(Photoshop CS3) Lightroom workflow, if present the document is in the middle of a Lightroom workflow.

0x2710

10000

Print flags information. 2 bytes version ( = 1), 1 byte center crop marks, 1 byte ( = 0), 4 bytes bleed width value, 2 bytes bleed width scale.

4

Version ( = 1)

8

Future implementation of document-specific grids (4 bytes horizontal, 4 bytes vertical). Currently, sets the grid cycle to every quarter inch, i.e. 576 for both horizontal & vertical (at 72 dpi, that is 18 * 32 = 576)

4

fGuideCount : Number of guide resource blocks (can be 0).

4 * 4

Rectangle containing the contents of the layer. Specified as top, left, bottom, right coordinates

2

Number of channels in the layer

6 *

number of channels

Channel information. Six bytes per channel, consisting of:

2 bytes for Channel ID: 0 = red, 1 = green, etc.;

-1 = transparency mask; -2 = user supplied layer mask, -3 real user supplied layer mask (when both a user mask and a vector mask are present)

4 bytes for length of corresponding channel data. (**PSB** 8 bytes for length of corresponding channel data.) See See Channel image data for structure of channel data.

4

Blend mode signature: '8BIM'

4

Blend mode key:

'pass' = pass through, 'norm' = normal, 'diss' = dissolve, 'dark' = darken, 'mul ' = multiply, 'idiv' = color burn, 'lbrn' = linear burn, 'dkCl' = darker color, 'lite' = lighten, 'scrn' = screen, 'div ' = color dodge, 'lddg' = linear dodge, 'lgCl' = lighter color, 'over' = overlay, 'sLit' = soft light, 'hLit' = hard light, 'vLit' = vivid light, 'lLit' = linear light, 'pLit' = pin light, 'hMix' = hard mix, 'diff' = difference, 'smud' = exclusion, 'fsub' = subtract, 'fdiv' = divide 'hue ' = hue, 'sat ' = saturation, 'colr' = color, 'lum ' = luminosity,

1

Opacity. 0 = transparent ... 255 = opaque

1

Clipping: 0 = base, 1 = non-base

1

Flags:
bit 0 = transparency protected;
bit 1 = visible;
bit 2 = obsolete;
bit 3 = 1 for Photoshop 5.0 and later, tells if bit 4 has useful information;
bit 4 = pixel data irrelevant to appearance of document

1

Filler (zero)

4

Length of the extra data field ( = the total length of the next five fields).

Variable

Layer mask data: See See Layer mask / adjustment layer data for structure. Can be 40 bytes, 24 bytes, or 4 bytes if no layer mask.

Variable

Layer blending ranges: See See Layer blending ranges data.

Variable

Layer name: Pascal string, padded to a multiple of 4 bytes.

4

Size of the data: Check the size and flags to determine what is or is not present. If zero, the following fields are not present

4 * 4

Rectangle enclosing layer mask: Top, left, bottom, right

1

Default color. 0 or 255

1

Flags.

bit 0 = position relative to layer
bit 1 = layer mask disabled
bit 2 = invert layer mask when blending (Obsolete)
bit 3 = indicates that the user mask actually came from rendering other data
bit 4 = indicates that the user and/or vector masks have parameters applied to them

1

Mask Parameters. Only present if bit 4 of Flags set above.

Variable

Mask Parameters bit flags present as follows:
bit 0 = user mask density, 1 byte
bit 1 = user mask feather, 8 byte, double
bit 2 = vector mask density, 1 byte
bit 3 = vector mask feather, 8 bytes, double

2

Padding. Only present if size = 20. Otherwise the following is present

1

Real Flags. Same as Flags information above.

1

Real user mask background. 0 or 255.

4 * 4

Rectangle enclosing layer mask: Top, left, bottom, right.

4

Length of layer blending ranges data

4

Composite gray blend source. Contains 2 black values followed by 2 white values. Present but irrelevant for Lab & Grayscale.

4

Composite gray blend destination range

4

First channel source range

4

First channel destination range

4

Second channel source range

4

Second channel destination range

...

...

4

Nth channel source range

4

Nth channel destination range

2

Compression. 0 = Raw Data, 1 = RLE compressed, 2 = ZIP without prediction, 3 = ZIP with prediction.

Variable

Image data.

If the compression code is 0, the image data is just the raw image data, whose size is calculated as (LayerBottom-LayerTop)* (LayerRight-LayerLeft) (from the first field in See Layer records).

If the compression code is 1, the image data starts with the byte counts for all the scan lines in the channel (LayerBottom-LayerTop) , with each count stored as a two-byte value.(**PSB** each count stored as a four-byte value.) The RLE compressed data follows, with each scan line compressed separately. The RLE compression is the same compression algorithm used by the Macintosh ROM routine PackBits, and the TIFF standard.

If the layer's size, and therefore the data, is odd, a pad byte will be inserted at the end of the row.

If the layer is an adjustment layer, the channel data is undefined (probably all white.)

4

Length of global layer mask info section.

2

Overlay color space (undocumented).

8

4 * 2 byte color components

2

Opacity. 0 = transparent, 100 = opaque.

1

Kind. 0 = Color selected--i.e. inverted; 1 = Color protected;128 = use value stored per layer. This value is preferred. The others are for backward compatibility with beta versions.

Variable

Filler: zeros

4

Signature: '8BIM' or '8B64'

4

Key: a 4-character code (See individual sections)

4

Length data below, rounded up to an even byte count.

(**PSB**, the following keys have a length count of 8 bytes: LMsk, Lr16, Lr32, Layr, Mt16, Mt32, Mtrn, Alph, FMsk, lnk2, FEid, FXid, PxSD.

Variable

Data (See individual sections)

2

Version: 0

2

Effects count: may be 6 (for the 6 effects in Photoshop 5 and 6) or 7 (for Photoshop 7.0)

The next three items are repeated for each of the effects.

4

Signature: '8BIM'

4

Effects signatures: OSType key for which effects type to use:

'cmnS' = common state (see See Effects layer, common state info)

'dsdw' = drop shadow (see See Effects layer, drop shadow and inner shadow info)

'isdw' = inner shadow (see See Effects layer, drop shadow and inner shadow info)

'oglw' = outer glow (see See Effects layer, outer glow info)

'iglw' = inner glow (see See Effects layer, inner glow info)

'bevl' = bevel (see See Effects layer, bevel info)

'sofi' = solid fill ( Photoshop 7.0) (see See Effects layer, solid fill (added in Photoshop 7.0))

Variable

See appropriate tables.

330

tSubIFD . Documented in the TIFF-PM6.pdf file as a PageMaker extension

437

JPEG tables. See Photoshop TIFF.pdf for more information.

700

XMP metadata.

33723

File information (IPTC-NAA record 2: see the documents in the IPTC folder of the Documentation folder).

34377

Photoshop image resources (see See Image Resources Section)

34665

EXIF IFD pointer.

34675

ICC Profiles (see the ICC1v42_2006-05.pdf file from the International Color Consortium in the Documentation folder of the Photoshop SDK)

34853

EXIF GPS info.

37724

tImageSourceData . Begins with the null-terminated string " Adobe Photoshop Document Data Block ", (**PSB** " Adobe Photoshop Document Data V0002 "), followed by data of various types. See Photoshop TIFF.pdf for a list .

50255

tAnnotations . See See Annotations for details.

8

Value

4

Value

Variable

Type: 4 bytes (length), followed either by string or (if length is zero) 4-byte typeID

Variable

Enum: 4 bytes (length), followed either by string or (if length is zero) 4-byte enum

Variable

Value

2

Version ( = 300)

2

Separation type. 0 = UCR separations; 1 = GCR separations

2

Blank ink limit (0...100)

2

Total ink limit (200...400)

2

Undercolor addition for GCR separations (0...100)

Variable

Black generation (spline) curve detailed in See Black generation curve data structure. See also the Curves data format in See Curves file format.

2

Number of points in curve ( 2...19)

2* number of points

Each curve point is a pair of short integers where the first number is the output value (vertical coordinate on the Black Generation dialog graph) and the second is the input value. All coordinates have range 0 to 255. A NULL curve (no change to image data) is represented by the following five-number, ten-byte sequence in a file:

2 0 0 255 255.

The black generation curve and the UCA limit must both be present even if the separation type is set to UCR ( = 0).

2

Version ( =1 )

2

Count of colors in the file.

count *10

Colors. Each color is 10 bytes, as described in See Color structure.

At the end of a version 1 file is the version 2 information.

2

Version ( = 2 )

2

Count of colors in the file. The next two fields are repeated for each count.

count *10

Colors. Each color is 10 bytes, as described in See Color structure.

Variable

Unicode string: color name.

2

The color space the color belongs to (see See Color space IDs).

8

Four short unsigned integers with the actual color data. If the color does not require four values, the extra values are undefined and should be written as zeros. See See Color space IDs.

0

RGB.

The first three values in the color data are red , green , and blue . They are full unsigned 16-bit values as in Apple's RGBColor data structure. Pure red = 65535, 0, 0.

1

HSB.

The first three values in the color data are hue , saturation , and brightness . They are full unsigned 16-bit values as in Apple's HSVColor data structure. Pure red = 0,65535, 65535.

2

CMYK.

The four values in the color data are cyan , magenta , yellow , and black . They are full unsigned 16-bit values.

0 = 100% ink. For example, pure cyan = 0,65535,65535,65535.

7

Lab.

The first three values in the color data are lightness , a chrominance , and b chrominance .

Lightness is a 16-bit value from 0...10000. Chrominance components are each 16-bit values from -12800...12700. Gray values are represented by chrominance components of 0. Pure white = 10000,0,0.

8

Grayscale.

The first value in the color data is the gray value, from 0...10000.

3

Pantone matching system

4

Focoltone colour system

5

Trumatch color

6

Toyo 88 colorfinder 1050

10

HKS colors

2

Count of points

4* count

For each point: 4 bytes of point data (2 bytes vertical, 2 bytes horizontal_

4

Minimum input range

4

Maximum input range

2

Count of points

4 * count

For each point: Point data (2 bytes vertical, 2 bytes horizontal)

1 * count

For each point: boolean indicating whether the point is continuous

4

Min input range

4

Max input range

2

The color space the color belongs to (see See Color space IDs).

8

Four short unsigned integers with the actual color data. If the color does not require four values to specify, the extra values are undefined and should be written as zeros.

26

Transfer curve: Array of 13 short integers from 0...1000 representing 0.0...100.0. All but the first and last value may be -1, representing no point on the curve. Any curves beyond the last plate should be equal to the NULL curve. A NULL transfer curve looks like this: 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1000.

2

Override ( = 0). Short integer for compatibility. Ignored by Photoshop 3.0 and higher.

1

if Lab (color space = 7): low endpoint of L value

if grayscale (color space = 8): low endpoint of gray range

1

if Lab: high endpoint of L value

if grayscale: 0

1

if Lab: low endpoint of a chrominance value

if grayscale: 0

1

if Lab: high endpoint of a chrominance value

if grayscale: 0

1

if Lab: low endpoint of b chrominance value

if grayscale: low endpoint of gray range

1

if Lab: high endpoint of b chrominance value

if grayscale: high endpoint of gray range

2

Hue change. Short integer from -100...100.

2

Saturation change. Short integer from -100...100.

2

Lightness change Short integer from -100...100. .