How to eliminate or delete password in pdf from my PC?

If you are finding a way on how to eliminate PDF password. John the Ripper is a well-known, free, open-source password cracker, and it's fully capable of handling PDFs. The general process to eliminate PDF password is a two-step dance:

1. Extract the Hash: You can't feed the PDF directly into John. First, you use a companion tool called pdf2 john (or pdf2 john.pl) to pull out the password's "hash" – a cryptographic fingerprint of the password. The command looks something like this: perl pdf2 john.pl your_file. pdf > hash.txt.

2. Crack the Hash: Then, you run John on that hash.txt file. You can use a wordlist (a list of common passwords) like the famous rockyou.txt with a command like: john --wordlist=rockyou.txt hash .txt.

If the password is weak and in your wordlist, John will find it and you'll know how to eliminate PDF password in no time.

John the Ripper is a powerful, free tool that is definitely a viable path to explore. Just go in with realistic expectations: it's a time-consuming process that relies on guessing, and it's only effective if the password is weak enough to be found in a wordlist or is short enough to be brute-forced.