Illustrator script to remove the unwanted swatches

Hi Raghav,

There is no direct API to delete the unused swatches. This possible via action only. There is another way of doing this but in the end it also using actions. Try following code

function unusedSwatch(){
    actionString = [
        '/version 3',
        '/name [ 8',
        '756e757365647377',
        ']',
        '/isOpen 1',
        '/actionCount 1',
        '/action-1 {',
        '/name [ 8',
        '737774636864656c',
        ']',
        '/keyIndex 0',
        '/colorIndex 0',
        '/isOpen 0',
        '/eventCount 2',
        '/event-1 {',
        '/useRulersIn1stQuadrant 0',
        '/internalName (ai_plugin_swatches)',
        '/localizedName [ 8',
        '5377617463686573',
        ']',
        '/isOpen 0',
        '/isOn 1',
        '/hasDialog 0',
        '/parameterCount 1',
        '/parameter-1 {',
        '/key 1835363957',
        '/showInPalette 4294967295',
        '/type (enumerated)',
        '/name [ 17',
        '    53656c65637420416c6c20556e75736564',
        ']',
        '/value 11',
        '}',
        '}',
        '/event-2 {',
        '/useRulersIn1stQuadrant 0',
        '/internalName (ai_plugin_swatches)',
        '/localizedName [ 8',
        '5377617463686573',
        ']',
        '/isOpen 0',
        '/isOn 1',
        '/hasDialog 1',
        '/showDialog 0',
        '/parameterCount 1',
        '/parameter-1 {',
        '/key 1835363957',
        '/showInPalette 4294967295',
        '/type (enumerated)',
        '/name [ 13',
        '    44656c65746520537761746368',
        ']',
        '/value 3',
        '}',
        '}',
        '}'
   ].join('\n')
        $.writeln('hit')
        var f = new File(Folder.desktop + "/unusedsw.aia");
        f.open('w')
        f.write(actionString)
        f.close()
        app.loadAction(f)
        app.doScript('swtchdel','unusedsw')
        app.unloadAction('unusedsw', '');
        f.remove();
}

unusedSwatch();

The difference here is action string is in the code instead of separate file. It also creating a file in the background but also removing it. For me it is almost same solution just a different way of doing that.