How to create multiple size app icons on single click in photoshop

How to automate exporting multiple PNGs with different sizes from Photoshop

Step 1 > Create .jsx file (as below given or use same code and save as filename.jsf)

Code:-

var inFolder = Folder.selectDialog("Please select folder to process");

if(inFolder !== null) {

  var fileList = inFolder.getFiles(/\.(jpg|tif|psd|png)$/i);

  var outfolderName = prompt('Folder name', 'MultipleIcons');

  var outfolder = new Folder(decodeURI(inFolder) + "/" + outfolderName);

  if (!outfolder.exists) outfolder.create();

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

    if(fileList[a] instanceof File) {

      var doc = open(fileList[a]);

      var docname = fileList[a].name.replace(/\.[^\.]+$/, '');

      micons();

      doc.close(SaveOptions.DONOTSAVECHANGES);

    }

  }

}

function micons() {

  var savedRuler = app.preferences.rulerUnits;

  var w = app.activeDocument.width;

  var h = app.activeDocument.height;

  var quality = 50;

  app.preferences.rulerUnits = Units.PIXELS;

  if(w > h) app.activeDocument.resizeCanvas (w, w, AnchorPosition.MIDDLECENTER);

  if(w < h) app.activeDocument.resizeCanvas (h, h, AnchorPosition.MIDDLECENTER);

  app.activeDocument.resizeImage('2560px', undefined, undefined, ResampleMethod.BICUBICSHARPER);

  app.preferences.rulerUnits = savedRuler;

  for(var i = 4; i >= 0; i--) {

    var outfolder = new Folder(decodeURI(inFolder) + "/" + outfolderName + "/" + docname + "/TileGroup0");

    if (outfolder.exists === false) outfolder.create();

    var saveFile = new File(decodeURI(outfolder) + "/" + i + "micons.png");

    SavePNG(saveFile, quality);

    app.activeDocument.resizeImage('50%','50%', undefined, ResampleMethod.BICUBICSHARPER);

    quality = quality + 10;

  }

}

function SavePNG(saveFile, quality) {

  var exportOptionsSaveForWeb = new ExportOptionsSaveForWeb();

  exportOptionsSaveForWeb.format = SaveDocumentType.PNG;

  exportOptionsSaveForWeb.includeProfile = false;

  exportOptionsSaveForWeb.interlaced = true;

  exportOptionsSaveForWeb.optimized = true;

  exportOptionsSaveForWeb.quality = quality;

  activeDocument.exportDocument(saveFile, ExportType.SAVEFORWEB,exportOptionsSaveForWeb);

}

Step 2 > Place the file in  (C:\Program Files\Adobe\Adobe Photoshop CC 2015\Presets\Scripts)

for windows OS.

Step 3 >  Open Photoshop you will get this Popup Window

Step 4 > Select the Image folder where you place all images which you want to convert in multiple size images.

Step 5 > After select your Image folder, you will get another Popup window where you can give the name of the new created folder.

Step 6 > After click OK automatically it converts your kept All images in folder in different size with their name in folder.

OUTPUT