XnView Software

I need to process a bunch of files, and I need to see the "After" result for a specified file, but unfortunately there is no such an option. I need to click on the arrows for "Next File" a lot of times until I'm reaching the desired image. Will be great to have into the "Input files" panel an option to double-click to use selected image for preview, or right-click and then select "Use image for preview".

Hmm, I think I understand your issue. Perhaps a "Navigate to" button (graphical symbol!) which opens up a small list of all files in the batch conversion right of the "<" ">" buttons?

Yes, will be great to have a "Navigate to" button (graphical symbol!) which opens up a small list of all files, and from there to quickly select the desired one to use as preview.