Pingo is a command-line program that lets you compress images with or without loss of quality. You can compress images by up to 60 percent in JPG format, or perform lossless compression in PNG format.
Compression modes
The platform offers five lossless compression levels for PNG and three lossy compression levels for JPG. The quality loss in JPG is almost imperceptible to the human eye; you would need to zoom in on the image to see the pixels.
Getting started
Once you download the program from its official website, you'll find the executable inside a .ZIP file. To start using it, open the CMD window on your computer and drag the "pingo.exe" file into the CMD window. You're now ready to compress images at the levels you need.
Now all you have to do is press "Enter" and the utility will show you the compression levels for both lossless and lossy compression. On the left column you'll see the 5 lossless compression levels, and on the right column the three lossy compression levels.
You can see that in batch lossless compression, the options go from "s0" to "s4", changing the type of compression. On the other hand, in batch lossy compression, the modes go from "X0" to "x2".
Command syntax
At this point, you are ready to compress images in batch. You'll need to enter the following command:
C:\Users\Neoteo\Desktop\pingo.exe – s1 "C:\Users\Neoteo\Desktop\Neoteo"
First, you need to indicate the location of the executable "pingo.exe", then add a space, a hyphen, and the compression method, and finally, in quotes, the location of the folder (for batch compression) or the file (for individual compression). Remember that if you do lossless compression, the folder should only contain PNG images, and if you do lossy compression, only JPG images.
Before compressing the images, make a backup of them, because the platform directly manipulates the original files.
In our tests, we noticed great compression quality; it's very good and on par with any program with a GUI. Compressed JPG images don't show quality loss at first glance, and compressed PNG images have a very good result.
Pingo is a free program available for Windows operating systems.
