How to use Unlock PDF
- Drop one or more PDF files on the page. Each file is checked and labelled, for example “Restricted” or “Needs a password to open”.
- For a file that needs a password to open, type the password you already know.
- Tick the box confirming that you own the files or that their owner has allowed you to remove the protection.
- Click “Unlock file(s)”, then download each file or “Download all as ZIP”.
Supported formats
Input: PDF files, several at once. Output: an unprotected copy of each file named <name>.unlocked.pdf; several files can be downloaded together as unlocked-pdf.zip.
Limits
It removes only a password you type in, or the restrictions on a file that already opens without a password; it never guesses or cracks passwords. Digital signatures are no longer valid in the unlocked copy, and very large files depend on your device’s memory.
Privacy
Everything runs in your browser: your files are never uploaded to a server, and there is no sign-up.
Frequently asked questions
Can it open a PDF if I forgot the password?
No. The tool does not guess, try lists of passwords or crack encryption. If a file needs a password to open and you do not know it, ask the person who created or sent it.
How do I remove printing or copying restrictions from my PDF?
Files that open without a password but block printing, copying or editing are labelled “Restricted”. Tick the confirmation box and click “Unlock file(s)”: no password is needed, and the copy you download has no restrictions.
What is the difference between a password to open and restrictions?
A password to open (user password) encrypts the file so nobody can read it without that password. Restrictions (owner password) let anyone open the file but ask PDF software to block printing, copying or editing.
Are my files and passwords uploaded?
No. The PDF and the password are processed in your browser and never sent to a server. The password is cleared from the page as soon as the file is unlocked.
Why are the digital signatures no longer valid?
Removing the encryption rewrites the file, so any digital signature in it no longer matches. The tool warns you when a file is signed: keep the original if the signature matters.