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.