To get an overview to use Light Image Resizer, check this video
Basically, once you have rebooted the computer after the installation :
– Open the folder with your pictures ( select with click + hold the key shift or ctrl ),
– Right click on the selection of files to locate a shell menu “Light Image Resizer”
– Resize by following the instructions and apply your own settings.
Congratulations, you have new resized light images.
For more information read our tutorial.