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I made a rookie error and accidentally saved about 20 images in Photoshop as .jpg files rather than .png files.

Is there a quick way I can convert all these files to a .png format at once rather than individually?

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  • If your pngs are supposed to have transparent background, I wouldn't recommend conversion. I would probably look into other, more automatic ways of saving the images, rather than convert them.
    – Joonas
    Jun 27, 2014 at 5:50
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    I wouldn't convert the jpegs into PNGs regardless of transparency since the images will end up with less information than they could have, if saved as PNG straight from PS.
    – Henrik Ekblom
    Jun 27, 2014 at 7:46
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    Thanks for the advice, I ended up saving the PNGs straight from PS as you suggested. I don't want to risk ending up with less information.
    – user47821
    Jun 27, 2014 at 7:49
  • You might find these helpful.
    – Joonas
    Jun 27, 2014 at 18:58

4 Answers 4

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You can do this by recording a custom Action of yourself:

  1. Opening the file
  2. Saving it as a .png file
  3. Closing the file

Then you can automate this for the entire folder by going File -> Automate -> Batch. Choose the folder containing all the images and run your custom Action.

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Well, you are about to commit another rookie error.

There is absolutely no advantage in converting a JPG file to PNG.

The JPG compression is now applied to your file, there is no way to "undo" that. The only thing you are going to have now is a bigger file size with the exact same quality as the JPG.

The only reason to do this is if you process again your image to add a transparency, or in the remote case your application can only use PNG, for example in the case of a Gaming engine. If that is not the case do not do that.

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You can automate the process by making "action" in Photoshop. Its called "Batch Process".

Batch-process files:

  1. Choose File > Automate > Batch
  2. Specify the action you want to use to process files from the Set and Action pop-up menus.
  3. Choose the files to process from the Source pop-up menu.
  4. Set processing, saving, and file naming options.

And you should be good to go.

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I would suggest importing all the images onto the same canvas and then File > Scripts > Export layers to file.

Hoping this would help

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