I think I'll pass...I tried this on a couple of web screens and the quality is just "plain Jane". Mostly text, hardly any color and/or shapes. Was hoping for better.

Consente di rimuovere comodamente gli elementi che non vogliamo stampare, ma vorrei poter capire in anticipo quante pagine saranno stampate

It's OK. But can't do print preview of a selection (selected text/images).
It lost a star due to how bulky the edit functionality was, too.

Suggestions:
1) Enable Print/Print Preview of selected text.
2) Allow bulk edits instead of one edit at a time via CSS/Java Script.
Edit: Example: Select the entire navigation area and or title area at once. Currently you have to hover over too narrow a scope.

Edit: There is an undo button. I just missed it.

На предпросмотре всё замечательно, но при сохранении в pdf запросто может разбить картинку на 2 страницы и оставить огромные промежутки перед и после изображения. Не справляется с формулами.
Из плюсов - красивый предпросмотр и возможность сохранять страницы, на которых необходимо авторизоваться.

Apparently doesn't save images as-is or at least compressed. A page I tried was 1.5 MB directly saved and 6.5 MB as a generated PDF.

Sometimes nothing happens when the button is clicked. At least some sort of feedback or error message would be nice.