RobTank

Hi, thanks! that fixed most of the images I had issues with.

Still there are problems with the following 4 images:
Losslessly compressing https://virtualtournapoli.com/wp-content/themes/photolux/lib/utils/timthumb.php?src=https://virtualtournapoli.com/wp-content/uploads/semplice.jpg&h=400&w=980&zc=1&q=100&a=c could save 13.3KiB (7% reduction).
Losslessly compressing https://virtualtournapoli.com/wp-content/themes/photolux/lib/utils/timthumb.php?src=https://virtualtournapoli.com/wp-content/uploads/veloce.jpg&h=400&w=980&zc=1&q=100&a=c could save 7.6KiB (5% reduction).
Losslessly compressing https://virtualtournapoli.com/wp-content/themes/photolux/lib/utils/timthumb.php?src=https://virtualtournapoli.com/wp-content/uploads/conveniente.jpg&h=400&w=980&zc=1&q=100&a=c could save 6.6KiB (4% reduction).
Losslessly compressing https://virtualtournapoli.com/wp-content/uploads/1406038117banner_sito.png could save 3.0KiB (26% reduction).

Any suggestions on how to proceed?

Thanks!

Now it works perfectly!!!

thanks a lot Max, and keep up with your excellent and useful work!!!

Rob