: Changing colour mode of black in InDesign I was under the impression that, to convert the colour mode of an InDesign document, you just had to modify Edit > Transparency Blend Space and

@Cooney243

Try this one:

First, save your file as IDML.
Knowing that an IDML file is basically an archive of XML files, you can open it as an archive (using a (de)compression tool). Do not decompress it, just open the archive.
Open the Resources folder, then the Preferences.XML file.
In a text editor, look for

Intent="PrintIntent"


and change to

Intent="WebIntent"


or obviously, the other way round depending whether you want to change [Black] to RGB or CMYK.

Save in archive and reopen the IDML file in Indesign.
Hope that helps

Edit: Oh, and by the way, if you have tons of swatches, you may want to run a single line script to change them all to RBG or CMYK (or Lab, why not...)

app.activeDocument.colors.everyItem().properties = {space:ColorSpace.CMYK};


or

app.activeDocument.colors.everyItem().properties = {space:ColorSpace.RGB};

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