This is useful if after you made the web check-in, you decided to not print immediately.
To retrieve your Cebu Pacific boarding pass after making an online check-in, go to https://book.cebupacificair.com/RetrieveBooking.aspx . You have 4 options to be able to continue. What you choose depends on what information you have. After logging in, go to https://book.cebupacificair.com/BoardingPass.aspx . I couldn’t find a link from the “Manage Booking” page to the Boarding Pass page so I had to resort to this.