Secure & archive · guide
What Unlock PDF does
Unlock PDF saves an unencrypted copy of a PDF you are entitled to open. Enter the password that opens the file or, if it opens freely but blocks printing or copying, its permissions password, and the copy has neither the password nor those restrictions. It cannot lift restrictions without that password, it never guesses or cracks passwords, it lists the restrictions it detected, and the file and the password stay in your browser.
How to unlock PDF in your browser
- Choose the protected PDF Select the PDF you want to unlock. It opens in this browser tab and is not uploaded.
- Enter the password If the PDF asks for a password when you open it, type that password. If it opens freely but blocks printing or copying, type its permissions password, also called the owner password. Leaving the field empty does not work.
- Unlock and save Select Unlock and read the result: it lists the restrictions it detected and anything, such as bookmarks, that could not be carried into the unlocked copy. Store the copy with care, since anyone can now open it.
Worked example
Remove a password from your own document for an approved workflow.
- Starting point
- Choose a protected PDF you are authorised to modify and have its valid password ready.
- What to do
- Enter the password, export the unprotected copy and reopen it to confirm the intended access.
- Result
- Expect an unprotected result only when the source can be opened with the supplied credentials.
If the result is not right
If the password is missing or rejected, contact the document owner or administrator. Renaming the file or retrying without credentials does not bypass encryption.
Limits worth knowing
- This is not a password-cracking service or permission to remove another person’s controls.
- This workflow stops on interactive forms rather than risk losing their fields. Use Flatten first and check every visible answer in that saved copy, then open the flattened PDF here. Keep the editable original; protected or XFA forms may need a compatible form application first.
Questions and answers
Can Unlock PDF remove a password I don't know?
No. A PDF that asks for a password when you open it is encrypted, and Unlock PDF needs that password to decrypt it; it does not guess or crack passwords. A PDF that opens normally but blocks printing or copying is different in kind, since those restrictions are permission flags rather than encryption, but this version still needs the file's permissions password to clear them. With the box empty it stops with an error.
The PDF opens without a password but will not let me print or copy. What do I do?
Enter the file's permissions password, also called the owner password, and select Unlock. Leaving the box empty does not work: Unlock stops and says the PDF needs a password, even though the file opens in your reader. With the right password the result lists the restrictions it detected, read from the file's permission flags, such as printing, printing at full resolution, copying text, editing, filling in forms or reordering pages. If you do not have the password, ask whoever made the file for an unrestricted copy.
It says the password did not open the document. What should I check?
PDF passwords are case-sensitive, so check Caps Lock and the keyboard layout, and if you pasted the password from an email, make sure no space came with it. When a bank or employer sent the file, the format of the password is usually explained in the message or letter that came with it. Unlock PDF tries only the password you type.
What does the unlocked copy leave behind?
Removing the encryption means rebuilding the document, which carries the content of every page but not bookmarks, file attachments or layer settings, so content on a hidden layer can show in the copy. The result names any bookmarks or attachments it had to leave, but it does not mention layers. The title and author fields are not copied either. Protected forms are the exception: a PDF with fillable fields is refused, since a rebuilt copy could not keep those fields working.
Does Unlock PDF send my password anywhere?
No. The password is used inside your browser tab to decrypt the file and is never transmitted, and the document stays on your device too. That matters more here than anywhere: unlocking on a website's server would mean handing over both the file and its key.