How to remove a password from a PDF

Step by step

1. Find the password. Check the email the PDF came with. Bank statements and payslips often use your date of birth, postcode or account number in a format the sender describes.
2. Open Unlock PDF. Go to the Unlock PDF tool. It runs in your browser, so the document and the password stay on your device.
3. Drop the PDF in. Drag the locked file onto the drop zone. The tool detects whether it has an open password, permission restrictions or both.
4. Type the Current password. Enter it in the Current password field. For a PDF that opens freely but blocks printing, leave the field blank; the restrictions can be removed without it.
5. Click Remove password. The file is decrypted in memory and saved as a new PDF with no encryption. The original is not changed.
6. Download. Click Download. Open the result to confirm there is no prompt, then store it somewhere sensible, since it no longer protects itself.

What kinds of PDF password are there?

PDFs support two passwords. The open password, sometimes called the user password, is required to view the document at all; this is what banks and HR departments use on statements and payslips. The owner password, or permissions password, lets the file open freely but restricts actions such as printing, copying text, editing or adding comments. A document can have one, the other or both.

The distinction matters because the permission restrictions are enforced by the viewing software rather than by encryption. Once a document is opened with the open password, or if it has no open password at all, the restrictions can be dropped by writing out an unencrypted copy.

Why do I need the password to unlock the file?

Because an open password is real encryption. Modern PDFs use AES-256, the same standard used for online banking, and the content is scrambled until the correct key is supplied. There is no shortcut: without the password, Kilnfile cannot read the pages and neither can anyone else. The tool is not a password cracker and does not try guesses. If you have forgotten it, the only route is the sender or whoever set it.

Is it legal to remove a PDF password?

For documents you own or are authorised to change, yes. Removing the password from your own bank statement so it opens without a prompt, or lifting the print restriction on a form you have been sent to complete, is normal use. In the UK, the Copyright, Designs and Patents Act 1988 makes it an offence to circumvent technical protection on copyrighted works without permission, so do not remove protection from an ebook, a paid report or a third party's confidential document to redistribute it. Having the password does not by itself mean you have the right to strip it.

Should I keep the password on the file?

Think about where the unlocked copy will live. A payslip saved unencrypted in a shared Downloads folder or synced to a family iCloud account is more exposed than the locked original. If the goal is only to print it or merge it with other documents, do that and then delete the unlocked copy. If you want to keep it protected under a password you actually remember, run the result through Protect PDF, which encrypts with AES-256 and lets you set a new Password to open.

What can I do with the PDF once it is unlocked?

Everything the other Kilnfile PDF tools do. Merge PDF can combine twelve monthly statements into one file for a mortgage application, which fails on locked inputs. Compress PDF can shrink a scanned statement for email. PDF to Text can pull the figures out for a spreadsheet. Those tools cannot open an encrypted file, so Unlock PDF is the first step whenever a document arrives with a password.

Frequently asked questions