PDFViewerHow to remove a password from a PDF
How you remove a password from a PDF depends on which of the two kinds it is. Permission restrictions on a file that opens normally can be stripped in the browser with Remove Restrictions. A password that is required to open the file can only be removed if you know it, using Acrobat, Preview, a browser's print-to-PDF or qpdf.
Two kinds of PDF password, and why it matters
A PDF can carry an open password (the user password), which encrypts the file so nothing displays until it is typed, and an owner password, which leaves the file readable but sets permissions: no printing, no copying, no editing. Many "locked" PDFs have only the second kind. The PDF passwords page has the details.
The viewer at pdfviewer.work handles the second case: Remove Restrictions strips owner-password permissions from a PDF that opens without being asked for anything. It cannot open a file that demands a password; it shows "This PDF is password-protected" and tells you to remove the password elsewhere first. Here is what to do in each case.
Case 1: the PDF opens, but printing or copying is blocked
- Open the file at pdfviewer.work, or on the unlock tool page, by dropping it or clicking Open a PDF.
- Click Remove Restrictions in the toolbar.
- Click Download. The new copy has no permission locks, so it prints, copies and accepts annotations anywhere.
Everything happens in the browser tab; the file is not sent to a server. Only do this on documents you own or are allowed to work with. Restrictions are a request from the author, and in some workplaces removing them is a policy matter even when it is technically trivial.
Case 2: the PDF asks for a password to open
If you know the password, open the file once and save an unencrypted copy. Each option below asks for the password at the start and produces a file that never asks again.
| Where | Steps |
|---|---|
| Adobe Acrobat (Pro, or Reader with the file open) | Open, enter the password, then File, Properties, Security, set Security Method to No Security and save. Reader can only print to a new PDF; Pro removes the encryption directly. |
| Preview on Mac | Open, enter the password, then File, Print, choose PDF, Save as PDF. The printed copy has no password. |
| Chrome or Edge | Open the PDF, enter the password, press Ctrl+P and pick Save as PDF as the destination. See Chrome's PDF viewer for its limits. |
| qpdf (command line, free) | qpdf --decrypt --password=SECRET locked.pdf open.pdf |
The print-to-PDF route rebuilds the pages, so form fields, bookmarks and links may be lost. qpdf and Acrobat keep the file intact. After either, the result opens in the viewer like any other PDF.
If you do not know the password
There is no honest shortcut. An open password encrypts the content, and a browser viewer cannot read what it cannot decrypt. Online "unlock" sites either handle owner restrictions only or quietly fail on real encryption, and they require uploading the file. Ask the sender for the password or for an unprotected copy; that is faster than anything else.
Brute-force tools such as pdfcrack exist for your own forgotten passwords, but they only succeed on short or dictionary passwords and can run for days. If the document came from a bank or an employer, their portal usually has the same file without protection.
What owner restrictions actually block, and what they do not
An owner password lets the author tick boxes: no printing, no copying text, no annotating, no page changes, no form filling. Readers that respect the flags gray out those commands, which is why Acrobat Reader refuses to print a "secured" bank statement even though it displays fine. The content is not encrypted against you; the flags are a request that compliant software honors.
That is why the viewer can remove them without a password and without any guessing: it rewrites the file with the permission flags gone. An open password is a different mechanism. The page content is encrypted with a key derived from the password, so a viewer that lacks the password has nothing to display. No software restores encrypted content without the key, and a site claiming otherwise is either handling the owner case or overstating.
Troubleshooting
- Remove Restrictions did nothing. The file probably has an open password, not permissions. Check: does it ask for a password before showing anything?
- The file still says it is secured in Acrobat. You opened the original. Use the downloaded copy.
- Printing works but copying does not. Some readers enforce permissions, others ignore them. Run the file through Remove Restrictions and both will work everywhere.
- The PDF will not open at all, with no password prompt. That is a different problem; see fix a PDF that will not open.
Frequently asked questions
How do I remove a password from a PDF without the password?
You cannot remove an open password without knowing it; the content is encrypted. Permission restrictions on a file that opens normally are different and come off with Remove Restrictions in the viewer.
Can Chrome remove a PDF password?
Only if you know it: open the PDF in Chrome, enter the password, press Ctrl+P and save as PDF. The saved copy has no password.
How do I remove a PDF password on a Mac?
Open the file in Preview, type the password, then File, Print, PDF, Save as PDF. For permission locks only, open it at pdfviewer.work and click Remove Restrictions.
What is the difference between an open password and a permissions password?
An open password encrypts the file so it cannot be displayed without it. A permissions (owner) password leaves the file readable but blocks printing, copying or editing.
Is it legal to remove a password from a PDF?
For your own documents, or ones you are authorized to use, removing restrictions is normal. Removing protection from someone else's document without permission may breach a contract or law in your jurisdiction.
Does the viewer upload my PDF to unlock it?
No. Remove Restrictions runs in your browser tab, and the file is never sent anywhere. Closing the tab removes it.