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Resize Transparent PNG Images in Irfanview

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Before you can add a watermark to your photos all at once in a batch, you need to have the right size image as a transparent png image. To do it in Irfanview you need know this trick!Before you can add a watermark to your photos all at once in a batch, you need to have the right size image as a transparent png image. To do it in Irfanview you need know this trick!

You can find where to download Irfanview for free on the official Irfanview page. (Always be careful when downloading from the internet.)

How to resize your watermark image on a transparent background using free Irfanview

To see how to read my tutorials shorthand, start by reading How to read my WordPress tutorials.

  1. Open your image in Irfanview
    • File>Open
    • browse your computer to find you image, >Open
  2. Image>Resize/Resample
    • under set new size enter one dimensions in pixels, make sure preserver aspect ratio is selected so that second dimension will adjust automatically
    • >OK
  3. File>Save as
    • In addition to the big pop-up window, look for a smaller window that pops up to the side, PNG/PNM/ICO save options
      • Select Save Transparent Color, Save Transparency as Alpha channel, Use main window color for transparency
    • In the main window
      • Enter a new name such as “logo watermark.”
      • Pay attention to the file saving path. Irfanview doesn’t automatically select the last folder/location you used.
      • > Save

Now, let’s get back to resizing a whole group of images and adding a watermark.