PDF Password Cracker is a website build using PDFJS Lib (by Mozilla) which loops over a user provided prefix, a range of numbers and a suffix to show the password which can open a password protected PDF:
1. Add a password protected PDF
2. Add a prefix of the password
3. Add a starting number, ending number to denote the loop range
4. Add a suffix of the password
5. PDF Password Cracker Website loops over all the possible passwords of the format: [prefix][number in the range][suffix]
6. Displays the cracked password and a pane to immediately open the file