Compress PNG images using PNGGauntlet | Best Settings

Hello, today I will tell you how you can use PNGGauntlet to compress PNG images. PNG is a lossless image compression format and that is why it is very difficult to compress them to a great extent (especially if they have alpha channel). PNGGauntlet is a free program using which you can compress as many PNG images as you want without losing any quality or alpha channel. It will compress the images as much as they can be compressed using the tools and libraries currently available.

You can find PNGGauntlet here: https://pnggauntlet.com

PNGGauntlet is developed by Ben Hollis. Visit his website here: https://benhollis.net

I have written text instructions here but I have also made a small (5 minute approx) video telling you how to use PNGGauntlet. You can find the video below. If you don’t like watching the video you can read everything here as well.

This is a video I made. Everything I want to tell you is in the video as well in this post.

I will tell you the settings for this program which I found to be the best. First if you download and install PNGGauntlet and you open it you will see a screen like this:

How the PNGGauntlet window looks like if you maximize it.

Then you must go to Tools -> Options and you will be presented with many a small window with many tabs as shown below:

Now you must click on PNGOut tab and do these steps

  1. Set ‘Bit Depth’ to ‘Minimize’
  2. Set ‘Color Type’ to ‘RGB+Alpha’
  3. Set ‘Filter Type’ to ‘None’
  4. You can leave rest of the options to their default values.

In the end it should look like this:

Next go to OptiPNG and do this:

  1. Click on ‘Enable OptiPNG’
  2. From the ‘Optimization Level’ dropdown choose ‘7 (Most)’

It should look like this:

Now you must go to ‘DeflOpt’ tab and do these steps:

  1. Click on the checkbox ‘Enable DeflOpt’

It should look like this:

That’s it. These are the settings which I found to be the best. Now you can drag and drop PNG images in this program and click on ‘Optimize’ to compress them.

Also, if you choose ‘Overwrite original files’ then it will overwrite the images you have dropped in it. If you don’t choose ‘Overwrite original files’ then you can enter a location where you want to save the compressed files. Generally when compressing pictures we choose the ‘Overwrite original files’ because we want to save space. So, there may be very few scenarios where you will have to keep the original file and write the compressed files somewhere else. You should not worry while overwriting your original files with it. It will not degrade the quality of the pictures.

I hope this information will help you in some way. Thank you for reading. 🙂

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