🚀 go-pugleaf

How about this Andrew, this is for png only. What it does is put a white pixel in each corner at .001 opacity so it doesn't show.




 
 selectedFolder = Folder.selectDialog( "Please select input folder");   

 var fileList = selectedFolder.getFiles();   

 var strtRulerUnits = app.preferences.rulerUnits;    

var strtTypeUnits = app.preferences.typeUnits;    

app.preferences.rulerUnits = Units.PIXELS;    

app.preferences.typeUnits = TypeUnits.PIXELS;   

 for(var a = 0; a<fileList.length;a++){   

var file = fileList[a];   

if(file instanceof File && file.name.match(/\.(png)$/i)){   

 open(file);   

var Width = activeDocument.width.value;   

var Height = activeDocument.height.value;   

 if(documents.length > 1){  

var EXT = file.name.split('.'); 

var PNG = false; 

if(EXT[1].toLowerCase() == 'png') PNG = true; 

if(PNG) pinCorners(); 

activeDocument.selection.selectAll();   

activeDocument.selection.copy();   

activeDocument.close(SaveOptions.DONOTSAVECHANGES);    

activeDocument = documents[0];   

app.activeDocument.resizeCanvas(app.activeDocument.width,app.activeDocument.height+Height, AnchorPosition.TOPCENTER);   

activeDocument.paste();   

activeDocument.selection.selectAll();   

align('AdBt');  

app.activeDocument.selection.deselect();   

if(PNG) activeDocument.mergeVisibleLayers() else activeDocument.flatten();  

    }   

 }else{   

  continue;   

  }   

app.preferences.rulerUnits = strtRulerUnits;    

app.preferences.typeUnits = strtTypeUnits;   

}   

   

function align(method) {    

   var desc = new ActionDescriptor();   

           var ref = new ActionReference();   

           ref.putEnumerated( charIDToTypeID( "Lyr " ), charIDToTypeID( "Ordn" ), charIDToTypeID( "Trgt" ) );    

       desc.putReference( charIDToTypeID( "null" ), ref );    

       desc.putEnumerated( charIDToTypeID( "Usng" ), charIDToTypeID( "ADSt" ), charIDToTypeID( method ) );   

   executeAction( charIDToTypeID( "Algn" ), desc, DialogModes.NO );    

}; 

function pinCorners(){ 

var Width =activeDocument.width.value; 

var Height =activeDocument.height.value; 

var fillColour = new SolidColor;  

fillColour.rgb.hexValue = 'ffffff';  

activeDocument.selection.select([[0,0],[1,0],[1,1],[0,1]], SelectionType.REPLACE, 0, false); 

activeDocument.selection.fill(fillColour,undefined,.001); 

activeDocument.selection.deselect(); 

activeDocument.selection.select([[(Width-1),0],[Width,0],[Width,1],[(Width-1),1]], SelectionType.REPLACE, 0, false); 

activeDocument.selection.fill(fillColour,undefined,.001); 

activeDocument.selection.deselect(); 

activeDocument.selection.select([[(Width-1),(Height-1)],[Width,(Height-1)],[Width,Height],[(Width-1),Height]], SelectionType.REPLACE, 0, false); 

activeDocument.selection.fill(fillColour,undefined,.001); 

activeDocument.selection.deselect(); 

activeDocument.selection.select([[0,(Height-1)],[1,(Height-1)],[1,Height],[0,Height]], SelectionType.REPLACE, 0, false); 

activeDocument.selection.fill(fillColour,undefined,.001); 

activeDocument.selection.deselect(); 

}