PDF Arranger can open password-protected PDFs, but only in the way any honest tool can: you type the password, and the file opens. This guide explains what happens when you open an encrypted file, what you can do with it once it is open, and where the hard limits are, so you do not waste time looking for an unlock feature that does not exist.
How opening a protected file works
- Open PDF Arranger and choose the protected PDF as you would any other file.
- The app prompts you for the password. Type it exactly, watching out for capital letters and for the keyboard layout if the password contains symbols.
- If the password is correct, the pages appear and you can merge, split, reorder, rotate, crop and export just like with an unprotected file.
If the password is wrong, the file simply does not open. Check for the common typing causes first: Caps Lock, a switched keyboard layout, or a trailing space if you pasted the password. If you received the file from someone else, ask the sender to confirm the password rather than guessing repeatedly.
What if you do not know the password?
Then PDF Arranger cannot help, and neither can we: the app has no password recovery, guessing or removal feature for files you cannot already open, and it is not designed to be one. Your realistic options are to get the password from whoever created or sent the file, or to work from an unprotected copy of the same document if one exists. Anything advertised as cracking an unknown PDF password is a different category of tool, with the legal and security questions that come with it.
Owner restrictions are not bypassed
Some PDFs use an owner password that restricts actions such as printing or copying, sometimes combined with a user password needed to open the file at all. PDF Arranger does not offer a way to strip or bypass those restrictions, and it does not provide settings to re-apply detailed permissions of your own, such as separate open and permissions passwords or print-only locks. What it does provide is a single password for the files you export, covered in the next section’s linked guide.
Saving a copy without a password
If you know the password and have opened the file, you can export it without setting a password on the output. That exported copy is then unprotected and opens anywhere without a prompt. In other words, removing a password in PDF Arranger always starts from knowing it: open with the password, export without one. The reverse direction works too: our guide on how to password-protect a PDF shows the Set Password dialog used when exporting, and explains that PDF Arranger applies the same password as both the user and owner password, using strong R=6 encryption.
One practical warning
Only remove protection from files you own or are authorised to handle, and think before sharing the unprotected copy: the password was probably there for a reason. Keep the original protected file as your master copy, and treat the unprotected export as a working copy for your own use.
Still having trouble?
If you are typing a password you are sure is correct and the file still will not open, test the same file and password in another PDF reader. If it fails there too, the password or the file is the problem. If it opens there but not in PDF Arranger 1.14.0, search the official GitHub Issues tracker and report it with your version, operating system and install method, without ever posting the password or the document itself.