if (app.documents.length != 0) {
    var doc= app.activeDocument;

    for (i = 0; i < 5; i++) {
        var layer = doc.artLayers[0]
        layer.textItem.contents = i;

        var pngFile    = new File("/Users/dlokshin/temp/" + i + ".png");
        pngSaveOptions = new PNGSaveOptions();
        pngSaveOptions.interlaced = false;
        doc.saveAs(pngFile, pngSaveOptions, true, Extension.LOWERCASE);
    }
}

Whenever I run the script above, instead of saving the files as 1.png, 2.png, 3.png, etc it opens up the save dialogue box and prompts me to type in the file name and click save. What am I doing wrong?

if (app.documents.length != 0) {
    var doc= app.activeDocument;

    for (i = 0; i < 5; i++) {
        var layer = doc.artLayers[0]
        layer.textItem.contents = i;

        var pngFile    = new File("/Users/dlokshin/temp/" + i + ".png");
        pngSaveOptions = new PNGSaveOptions();
        pngSaveOptions.interlaced = false;
        doc.saveAs(pngFile, pngSaveOptions, true, Extension.LOWERCASE);
    }
}

Whenever I run the script above, instead of saving the files as 1.png, 2.png, 3.png, etc it opens up the save dialogue box and prompts me to type in the file name and click save. What am I doing wrong?

• javascript
• photoshop-script

• The script you posted works fine! However Photoshop will pop up the save dialog if your output path is wrong. Also the app.displayDialogs = DialogModes.NO; as suggested in the answers is not required since PNGSaveOptions() will not open a dialog regardless. Maybe add a if (layer.kind == LayerKind.TEXT) {} to avoid errors on non text layers. – secondplace Commented Jul 13, 2024 at 15:41

3 Answers 3

Aparently saving a PNG is very different from saving a JPEG when scripting for photoshop. The below works for PNGs:

if (app.documents.length != 0) {
    var doc= app.activeDocument;

    for (i = 0; i < 5; i++) {
        var layer = doc.artLayers[0]
        layer.textItem.contents = i;

        var opts, file;
        opts = new ExportOptionsSaveForWeb();
        opts.format = SaveDocumentType.PNG;
        opts.PNG8 = false;
        opts.quality = 100;

        pngFile = new File("/Users/dlokshin/temp/speed.png");
        app.activeDocument.exportDocument(pngFile, ExportType.SAVEFORWEB, opts);
    }
}

Saving with PNGSaveOptions works for me if I provide Photoshop with the save path like this:

var doc = app.activeDocument;  
var filePath = activeDocument.fullName.path;  
var pngFile = File(filePath + "/" + "myname.png");
pngSaveOptions = new PNGSaveOptions();
doc.saveAs(pngFile, pngSaveOptions, true, Extension.LOWERCASE);

Just type this at the beginning

app.displayDialogs = DialogModes.NO;

And you will not get dialogs anymore.