Resizing in Faststone Image Viewer

Step 1
Save the file with a different name. (Important – you can then go back to the old file if things go wrong!)
Step 2
Go to ‘Edit’ then’Resize/Resample’
Step 3
For a landscape image change the width entry to 1600 pixels
(For portrait images change the height to 1200 pixels)
Make sure ‘Preserve Aspect Ratio’ box is ticked
Hit the ‘okay’ button
Step 4
Go to Edit Canvas Size from the main drop down menu
Step 5
Change the height entry to 1200 pixels
(For portrait images change the width to 1600 pixels)
Select the centre box on the left and hit the ‘OK’ button
Step 6
Save the updated image