Export graphics from a PSD file to be used as assets

ExportGraphicsOnly.jsx

#target photoshop

// =========================
// CONFIG
// =========================
var MIN_PIXEL_AREA = 100; // skip very small/empty layers
var EXPORT_FORMAT = "PNG"; // can be "PNG" or "JPG"
// =========================

function main() {
    if (!app.documents.length) {
        alert("No document is open.");
        return;
    }

    var doc = app.activeDocument;
    var outFolder = Folder.selectDialog("Select output folder for assets");
    if (!outFolder) return;

    var initialRulerUnits = app.preferences.rulerUnits;
    app.preferences.rulerUnits = Units.PIXELS;

    traverseLayers(doc, outFolder);

    app.preferences.rulerUnits = initialRulerUnits;
    alert("Export complete!");
}

function traverseLayers(container, outFolder) {
    for (var i = 0; i < container.layers.length; i++) {
        var layer = container.layers[i];

        if (!layer.visible) continue;
        if (layer.kind === LayerKind.TEXT) continue;

        if (layer.typename === "ArtLayer") {
            exportLayer(layer, outFolder);
        }
        else if (layer.typename === "LayerSet") {
            // Export the group itself
            exportLayer(layer, outFolder);
            // Recursively scan sublayers
            traverseLayers(layer, outFolder);
        }
    }
}

function exportLayer(layer, outFolder) {
    // Duplicate to new doc
    var doc = app.activeDocument;
    var dupDoc = app.documents.add(doc.width, doc.height, doc.resolution, "Temp", NewDocumentMode.RGB, DocumentFill.TRANSPARENT);
    app.activeDocument = doc;

    layer.duplicate(dupDoc, ElementPlacement.PLACEATBEGINNING);

    app.activeDocument = dupDoc;

    // Merge visible to flatten everything into one layer
    dupDoc.mergeVisibleLayers();

    // Trim transparent pixels
    dupDoc.trim(TrimType.TRANSPARENT, true, true, true, true);

    // Check size (skip tiny/empty)
    var w = dupDoc.width.as("px");
    var h = dupDoc.height.as("px");
    if (w * h < MIN_PIXEL_AREA) {
        dupDoc.close(SaveOptions.DONOTSAVECHANGES);
        app.activeDocument = doc;
        return;
    }

    // Build safe filename
    var safeName = layer.name.replace(/[\\\/\:\*\?\"\<\>\|]/g, "_");
    var saveFile = new File(outFolder + "/" + safeName + "." + EXPORT_FORMAT.toLowerCase());

    // Save
    if (EXPORT_FORMAT === "PNG") {
        var opts = new PNGSaveOptions();
        opts.interlaced = false;
        dupDoc.saveAs(saveFile, opts, true, Extension.LOWERCASE);
    } else if (EXPORT_FORMAT === "JPG") {
        var jpgOpts = new JPEGSaveOptions();
        jpgOpts.quality = 12;
        dupDoc.saveAs(saveFile, jpgOpts, true, Extension.LOWERCASE);
    }

    dupDoc.close(SaveOptions.DONOTSAVECHANGES);
    app.activeDocument = doc;
}

main();