Batch Replace Smart Object With Different Image Quality and Sizes

Question

Hi there,
I need help. I have this template that is in 1000x1000pixel and 300 dpi. I'm trying to replace the smart object inside with various JPEG that I have. These JPEG comes in large image sizes but lower than 300dpi. The issues is, when I run the script that I have, some of the pictures become really pixelated. Beforehand, I resized them to fit into the empty place in sizes that I find fit the best (8 cm x 6 cm). Some of them work okey, but then some of them just pretty bad. I'm wondering if you can help me fix the script that I have so I didn't have to resized the images before running the script, and for all of them to automatically fit into my template without altering the quality of the image that I put in.
below is the script that I am using and the screenshot of my template:
#target photoshop
if (app.documents.length > 0) {
var myDocument = app.activeDocument;
var theName= myDocument.name.match(/(.*)\.[^\.]+$/)[1];
var thePath = myDocument.path;
var theLayer = myDocument.activeLayer;
// psd options;
psdOpts = new PhotoshopSaveOptions();
psdOpts.embedColorProfile = true;
psdOpts.alphaChannels = true;
psdOpts.layers = true;
psdOpts.spotColors = true;
// check if layer is smart object;
if (theLayer.kind != "LayerKind.SMARTOBJECT") {alert ("selected layer is not a smart object")}
else {
// select files;
if ($.os.search(/windows/i) != -1) {var theFiles = File.openDialog ("please select files", "*.psd;*.jpg;*.jpeg;*.tif", true)}
else {var theFiles = File.openDialog ("please select files", getFiles, true)};
if (theFiles) {
// work through the array;
for (var m = 0; m < theFiles.length; m++) {
// replace smart object;
theLayer = replaceContents (theFiles[m], theLayer);
var theNewName = theFiles[m].name.match(/(.*)\.[^\.]+$/)[1];
//Raise color picker for Back cover;
try {
app.activeDocument.activeLayer = app.activeDocument.layers[app.activeDocument.layers.length - 1];
// =======================================================
var idsetd = charIDToTypeID( "setd" );
var desc7 = new ActionDescriptor();
var idnull = charIDToTypeID( "null" );
var ref2 = new ActionReference();
var idcontentLayer = stringIDToTypeID( "contentLayer" );
var idOrdn = charIDToTypeID( "Ordn" );
var idTrgt = charIDToTypeID( "Trgt" );
ref2.putEnumerated( idcontentLayer, idOrdn, idTrgt );
desc7.putReference( idnull, ref2 );
var idT = charIDToTypeID( "T " );
var desc8 = new ActionDescriptor();
var idClr = charIDToTypeID( "Clr " );
var idsolidColorLayer = stringIDToTypeID( "solidColorLayer" );
desc7.putObject( idT, idsolidColorLayer, desc8 );
executeAction( idsetd, desc7, DialogModes.ALL );
} catch (e) {};
//save jpg;
myDocument.saveAs((new File(thePath+"/"+theName+"_"+theNewName+".jpg")),psdOpts,true);
////// get psds, tifs and jpgs from files //////
function getFiles (theFile) {
if (theFile.name.match(/\.(psd|tif|jpeg|jpg)$/i) != null || theFile.constructor.name == "Folder") {
return true
////// replace contents //////
function replaceContents (newFile, theSO) {
app.activeDocument.activeLayer = theSO;
// =======================================================
var idplacedLayerReplaceContents = stringIDToTypeID( "placedLayerReplaceContents" );
var desc3 = new ActionDescriptor();
var idnull = charIDToTypeID( "null" );
desc3.putPath( idnull, new File( newFile ) );
var idPgNm = charIDToTypeID( "PgNm" );
desc3.putInteger( idPgNm, 1 );
executeAction( idplacedLayerReplaceContents, desc3, DialogModes.NO );
return app.activeDocument.activeLayer

Answer 1

Thank you for your answer.
I was resizing it before from bigger image size to a smaller one (121 cm to 8 cm) which fit my template size. But the dpi remains in 72 which makes the picture pixelized.
I am wondering if I can find a script that will keep the size of the first image that I put on the template for other images that I place, regardless the size they are imported to. Basically, how to make them all fit into the template regardless the size.
Thank you for the info about the scripting forum. I will write there too.
Sorry, I'm so new to this