Remove the password from a PDF you own

A PDF can carry two kinds of password. An open password (the user password in the PDF standard) is demanded before a reader shows a page. An owner password lets the file open but restricts printing, copying or editing. The Password field on the Unlock page is for the open password; the hint under it says so, and says to leave it blank if the file only has an owner password. The saved copy has no encryption and no permission flags, so the restrictions go with the prompt.

This matters beyond the prompt. The other tools on this site cannot open an encrypted PDF at all. Drop a locked file on Merge PDF or Compress PDF and it stops with a message that the file is password protected and that you should remove the password with the Unlock PDF tool first. That happens even when the file has only an owner password and opens freely in your reader, because the encryption is still there. Run it through Unlock with the field blank, then use the unlocked copy.

The field is a masked password field, so you cannot see what you typed, and your browser may offer to save or fill it the way it does on a login form. Decline that on a shared computer.

The tool writes a new file named after the original with -unlocked added before .pdf. Your original is not touched and still asks for a password until you replace or delete it. Pages, text, images, links, form fields and bookmarks are carried over as they are. The document's title, author and dates are left alone too: the tool opens the file, decrypts it, and writes it back out without any password or permission settings.

The first time you run it after opening the page, it fetches the decryption code, which the site loads only on the Protect and Unlock pages. The progress line reads Loading the decryption engine, then Opening the document, then Saving without the password. The page handles one PDF per run, up to 100 MB. To do several, click Start over after each download.

If the tool reports that the password did not open the document, the text you typed is not the password the file was encrypted with. Passwords are case-sensitive, and a trailing space copied from a note or an email is enough to fail. Type it again by hand rather than pasting, and check that you picked the right file if you have several versions with similar names.

If you left the field blank and the tool says the document needs a password, the file has an open password and cannot be processed without it. There is no recovery route here. The tool does not try word lists or exploit weaknesses, so a forgotten password means asking whoever created or sent the document.

The tool handles the standard PDF password scheme, the same one Protect PDF on this site uses. Documents locked through a rights-management server or a reader plugin work differently and are outside what it can open.

Removing the password removes the protection for everyone, not only for you. Anyone who gets the unlocked copy can open it, and any print or copy restrictions are gone with it. That is fine for a statement you keep in your own folder; think before forwarding it.

If the file must stay private but you want a password you will actually remember, run the unlocked copy through Protect PDF with a new one. If you only wanted to stop the prompt on your own device, store the unlocked copy where you keep the rest of your files and delete the locked original so you do not end up maintaining two versions.

The warning on the page is worth repeating: use this only on documents you own or are allowed to open. Removing a password from a file someone else protected can breach their terms even if you happen to know it.