Python PSD layers?

Question

I need to write a Python program for loading a PSD photoshop image, which has multiple layers and spit out png files (one for each layer). Can you do that in Python? I\'ve tried

Answer 1

Using the win32com plugin for python (available here: http://python.net/crew/mhammond/win32/) You can access photoshop and easily go through your layers and export them.

Here is a code sample that works on the layers within the currently active Photoshop document, and exports them into the folder defined in 'save_location'.

from win32com.client.dynamic import Dispatch

#Save location
save_location = 'c:\\temp\\'

#call photoshop
psApp = Dispatch('Photoshop.Application')

options = Dispatch('Photoshop.ExportOptionsSaveForWeb')
options.Format = 13   # PNG
options.PNG8 = False  # Sets it to PNG-24 bit

doc = psApp.activeDocument

#Hide the layers so that they don't get in the way when exporting
for layer in doc.layers:
    layer.Visible = False

#Now go through one at a time and export each layer
for layer in doc.layers:

    #build the filename
    savefile = save_location + layer.name + '.png'

    print 'Exporting', savefile

    #Set the current layer to be visible        
    layer.visible = True

    #Export the layer
    doc.Export(ExportIn=savefile, ExportAs=2, Options=options)

    #Set the layer to be invisible to make way for the next one
    layer.visible = False

Answer 2

There are also https://code.google.com/p/pypsd/ and https://github.com/kmike/psd-tools Python packages for reading PSD files.

Answer 3

Use psd_tools in Python

from psd_tools import PSDImage

psd_name = "your_name"
x = 0
psd = PSDImage.open('your_file.psd')

for layer in psd:
    x+=1
    if layer.kind == "smartobject":
        image.conmpose().save(psd_name + str(x) + "png")

Answer 4

You can use the win32com for accessing the Photoshop with Python. Possible pseudo code for your work:

1. Load the PSD file
2. Collect all layers and make all layers VISIBLE=OFF
3. Turn one layer after another, mark them VISIBLE=ON and export to PNG

    import win32com.client
    pApp = win32com.client.Dispatch('Photoshop.Application')

    def makeAllLayerInvisible(lyrs):
        for ly in lyrs:
            ly.Visible = False

    def makeEachLayerVisibleAndExportToPNG(lyrs):
        for ly in lyrs:
            ly.Visible = True
            options = win32com.client.Dispatch('Photoshop.PNGSaveOptions')
            options.Interlaced = False
            tf = 'PNG file name with path'
            doc.SaveAs(SaveIn=tf,Options=options)
            ly.Visible = False

    #pApp.Open(PSD file)
    doc = pApp.ActiveDocument
    makeAllLayerInvisible(doc.Layers)
    makeEachLayerVisibleAndExportToPNG(doc.Layers)

Answer 5

Use Gimp-Python? http://www.gimp.org/docs/python/index.html

You don't need Photoshop that way, and it should work on any platform that runs Gimp and Python. It's a large dependency, but a free one.

For doing it in PIL:

from PIL import Image, ImageSequence
im = Image.open("spam.psd")
layers = [frame.copy() for frame in ImageSequence.Iterator(im)]

Edit: OK, found the solution: https://github.com/jerem/psdparse

This will allow you to extract layers from a psd file with python without any non-python stuff.