You would add the watermark/logo as the top layer in the layer stack so it would be visible in the saved image file. You would use the script in an action that you would batch with menu file>Automate>Batch... or menu File>Scripts>Image Processor or menu File>Automate>Image Processor Pro. The Script I created I have posted. "PlaceLogo.jsx" You could use that script customized to use your watermark. You just need toe edit a few var statement.
If you want to resize the png images to square 1024x1024 I would use Fit resize the png images to fit some area like 1000px by 1000px then add canvas with canvas size 1024px by 1024 with the anchor point centered, You do not want to distort the png image content. The Watermark script step should be after the canvas has been resized to a 1024x1024 canvas. Saving as a jpeg will add a solid background color to any transparent pixel Jpeg does not support transparency.
/* ==========================================================
// 2021 John J. McAssey (JJMack)
// ======================================================= */
// This script is supplied as is. It is provided as freeware.
// The author accepts no liability for any problems arising from its use.
/*
<javascriptresource>
<about>$$$/JavaScripts/PlaceLogo/About=JJMack's PlaceLogo ^r^rCopyright 2021 Mouseprints.net^r^rPhotoshop Script^rCustomize using first four var</about>
<category>JJMack's Script</category>
<enableinfo>true</enableinfo>
</javascriptresource>
*/
#target photoshop;
app.bringToFront();
var logoFile = "~/Desktop/JJMack.png"; // Logo Image file should be large for resize down works better than up. Vector files can be any size.
var LogoSize = 10; // percent of document height to resize Logo to
var LogoMargin = 1; // percent of Document height the Logo should have as a margin
var LogoLocation = 9; // Like a tick tack toe board 1 through 9. 1=Top Left 9=Bottom Right
var LogoRotation = -20; // Center Logo Location 5 can be Rotated -90 through +90 degrees + degree Clockwise - CounterClockwise
app.displayDialogs = DialogModes.NO; // Dialog off
var strtRulerUnits = app.preferences.rulerUnits; // Save Users ruler units
var strtTypeUnits = app.preferences.typeUnits; // Save Users Type units
app.preferences.rulerUnits = Units.PIXELS; // work with pixels
app.preferences.typeUnits = TypeUnits.PIXELS; // work with pixels
//placeLogo(logoFile, LogoSize, LogoMargin, LogoLocation, LogoRotation); // Place Logo into the location 5 would be Document's center
if (documents.length) app.activeDocument.suspendHistory('placeLogo','placeLogo(logoFile,LogoSize,LogoMargin, LogoLocation, LogoRotation)' );
app.preferences.rulerUnits = strtRulerUnits; // Restore user ruler units
app.preferences.typeUnits = strtTypeUnits; // Restore user type units
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function placeLogo(Image,Size,Margin,position,angle){
if(!documents.length) return; // if no document return
var fileObj = new File(Image); // the passed file
if(!fileObj.exists){ // If file does not exits tell user
alert(fileObj.name + " does not exist!"); // Alert User
return; // return
}
try{
var doc = app.activeDocument; // set Doc object to active document
var layers = app.activeDocument.layers; // get layers
app.activeDocument.activeLayer = layers[0]; // Target Top Layer
placeFile(fileObj); // Place in file the Logo File
activeDocument.activeLayer.resize(100 ,100,AnchorPosition.MIDDLECENTER); // Insure Place did not scale layer
var SB = activeDocument.activeLayer.bounds; // get layers bounds
var layerHeight = SB[3] - SB[1]; // get layers height
var resizePercent = (100/layerHeight)*(Size/100*doc.height.value); // Percent to resize by
activeDocument.activeLayer.resize(resizePercent ,resizePercent,AnchorPosition.MIDDLECENTER); // Resize width and height by percentage
marginSize = Margin/100*doc.height.value; // Margin size
var selectedRegion = Array(Array(0+marginSize,0+marginSize), Array(doc.width-marginSize,0+marginSize), Array(doc.width-marginSize,doc.height-marginSize), Array(0+marginSize,doc.height-marginSize));
activeDocument.selection.select(selectedRegion); // Select document area for the logo Positioning
switch (position){ // Align resized logo smart object layer into position
case 1 : align('AdLf'); align('AdTp'); break;
case 2 : align('AdCH'); align('AdTp'); break;
case 3 : align('AdRg'); align('AdTp'); break;
case 4 : align('AdLf'); align('AdCV'); break;
case 5 : align('AdCH'); align('AdCV'); activeDocument.selection.deselect(); activeDocument.activeLayer.rotate(angle); break;
case 6 : align('AdRg'); align('AdCV'); break;
case 7 : align('AdLf'); align('AdBt'); break;
case 8 : align('AdCH'); align('AdBt'); break;
case 9 : align('AdRg'); align('AdBt'); break;
default : break;
}
app.activeDocument.selection.deselect(); // deselect
}
catch(e) { alert(e + ': on line ' + e.line); } // inform user of error
finally{ }
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function placeFile(placeFile) {
var desc21 = new ActionDescriptor();
desc21.putPath( charIDToTypeID('null'), new File(placeFile) );
desc21.putEnumerated( charIDToTypeID('FTcs'), charIDToTypeID('QCSt'), charIDToTypeID('Qcsa') );
var desc22 = new ActionDescriptor();
desc22.putUnitDouble( charIDToTypeID('Hrzn'), charIDToTypeID('#Pxl'), 0.000000 );
desc22.putUnitDouble( charIDToTypeID('Vrtc'), charIDToTypeID('#Pxl'), 0.000000 );
desc21.putObject( charIDToTypeID('Ofst'), charIDToTypeID('Ofst'), desc22 );
executeAction( charIDToTypeID('Plc '), desc21, DialogModes.NO );
}
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 ) );
try{
executeAction( charIDToTypeID( "Algn" ), desc, DialogModes.NO );
}catch(e){}
}
JJMack
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