Compressing all PNG images in a folder and its subfolders with TinyPNG

compress-folder-with-tinypng.jsx

#target photoshop

/* Open the given file, and compress with TinyPNG. */
function compressFile(file) {
  var document = open(file);

  if (document.mode == DocumentMode.INDEXEDCOLOR) {
    document.changeMode(ChangeMode.RGB);
  }

  var tinypng = new ActionDescriptor();
  tinypng.putPath(charIDToTypeID("In  "), file); /* Overwrite original! */

  var compress = new ActionDescriptor();
  compress.putObject(charIDToTypeID("Usng"), charIDToTypeID("tinY"), tinypng);
  executeAction(charIDToTypeID("Expr"), compress, DialogModes.NO);

  document.close(SaveOptions.DONOTSAVECHANGES);
}

/* Recursively compress files in the given folder, overwriting the originals. */
function compressFolder(folder) {
  var children = folder.getFiles();
  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    if (child instanceof Folder) {
      compressFolder(child);
    } else {
      /* Only attempt to compress PNG files. */
      if (child.name.slice(-4).toLowerCase() == ".png") {
        compressFile(child);
      }
    }
  }
}

try {
  compressFolder(Folder.selectDialog("Compress folder with TinyPNG"));
} catch(error) {
  alert("Error while processing: " + error);
}

When I used this script last year it compressed files in subfolders within subfolders. It's no longer doing that. Maybe a change in Photoshop CC 2017 or in the TinyPNG plugin itself? It runs through the files in these subfolders but does not compress them.

Any chance of success to have a JPG compatible version of this please?

Excelente!!! @rolftimmermans

Muchas gracias, funciona muy bien!!! 👍
lo estoy usando en Photoshop 2018 y ya tengo el plugin instalado.
nuevamente muchas gracias.

Excellent!!! @rolftimmermans
Thank you very much, it works very well !!! 👍
I'm using it in Photoshop 2018 and I already have the plugin installed.
again thank you very much.

Thank you so much for this small but great script.
I modified slightly to suit my requirements such as

1)included jpg
'''
if (child.name.slice(-4).toLowerCase() == ".png" || child.name.slice(-4).toLowerCase() == ".jpg") {
'''

2)thks for Otto's modification to escape from termination but I didn't want to stop the process even with an alart window so commented out the alert

3)message window to confirm the process finished
'''
alert("FINISHED");
'''

All worked well with my CS6 , 6000+consecutive files & sub-folders

This is great but it crashes both photoshop 2018 and 2019 when attempting to compress JPEG. Any chances for a updated script?