How to delete password from pdf on Windows as it is password protected?

Mozilla Firefox is a free built-in browser PDF viewer, but it only supports how to delete password from pdf for PDFs that allow printing, as it relies on the print-to-PDF saving feature to strip encryption.

It allows you to generate an unlocked PDF without extra PDF tools, but using this trick requires you to know the PDF opening password.

First, drag your password-protected PDF file into Firefox to open it. Enter the correct password to access full PDF content, then press Ctrl + P to bring up the print panel.

In the print destination dropdown, select "Save as PDF", set your storage path and new file name, then click Save to export the decrypted file.

Once saving finishes, you will get a new password-free PDF document on your local disk.

This method cannot how to delete password from pdf if the source PDF disables printing permissions, so it is only suitable for un-restricted printable encrypted PDF files.

If you don’t want to install dedicated PDF decryption software, you can try this method. It may lose bookmarks and complex formatting, so you should check the output PDF content carefully.