XnView: Resize Collection of Photos

1) Open XnView
2) Open the folder containing the images.
3) Select images you wish to resize by Ctrl + clicking on each file or select all files by Shift + click first and last image.
4) Go to Tools > Batch processing…
5) In the Output section select directory for your new resized images.
6) Click the „Transformations” tab
7) Expand the „Image” section
8) Double click „resize” to add it to the right column list.
7) Select Resize and Add to right column
8) Change parameters