What does Unlock PDF change?
It loads the PDF with pdf-lib's ignoreEncryption flag and re-saves it. This strips owner-password permission restrictions (no-print, no-copy, no-edit) but cannot bypass user-password encryption.
What this does not protect
- Cannot decrypt PDFs that require a user password to open. The tool has no password input — it simply re-parses and re-saves.
- AES-256 encrypted PDFs with user passwords will fail completely. There is no brute-force or cracking capability.
- Some PDFs with unusual encryption handlers (non-standard, DRM) will fail to load.
- It cannot fix compromised devices, accounts, or unsafe sharing channels.