Unlock PDF makes an unencrypted copy of a PDF whose password you already know. Bank statements, payslips, insurance documents and e-bills are often sent with a password (usually your date of birth or part of your account number), which gets tedious every time you open them. Enter the password once here and download a copy that opens straight away and has no print, copy or edit restrictions.
The password is checked in your browser. The file is decrypted and rewritten with @cantoo/pdf-lib, so text, links and form fields stay as they were and the text remains selectable. The tool then checks that the copy really opens without a password. For the rare encryption types pdf-lib can't rewrite, it falls back to rendering each page with pdf.js and rebuilding the PDF from images; it tells you before you run it, because text in that copy can't be selected.
PDFs that open without a password but have an owner password (blocking printing or copying) are also handled: the copy has those restrictions removed. This tool never guesses, cracks or recovers unknown passwords. Only unlock documents you own or have permission to change.