A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Dear Dario,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
Per the description shared, I understand the problem facing at your end and I would like to confirm whether the problem also happens if you insert the PDF as a printout even in the OneNote for the web. Moreover, I guess the resolution will be different when viewing the PDF in Adobe and inserting the PDF into the OneNote Notebook.
Thanks for your cooperation.
Sincerely,
Mia | Microsoft Community Moderator