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);
}

I just stumbled across tinypng and within 10 minutes found this page. The combination of the two is going to save me HOURS and HOURS. Thank you so much!!

Is it possible to include JPG files in the process? at the moment it seems to affect only PNG files.
If the script runs into an error with opening a file, it stops completely. is it possible to skip the files that give an error?

This script is definitely a life saver!

How do I get it to compress files in subfolders within subfolders? Right now I think it's only looking for files in subfolders and not checking if there are folders within the subfolders.

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?