No upload, 100% local, no account

Unlock PDF

Already know the password? Remove it so the PDF opens without prompting, everything runs in your browser, nothing is sent to a server.

How Unlock PDF (remove password) works

Unlock PDF removes the password from a PDF you can already open. Drop the file, type the password that opens it, and download a copy that no longer prompts for one. The decryption is done by qpdf compiled to WebAssembly, the same engine used on the command line.

Be clear about what this is and is not: it removes protection you are entitled to remove because you know the password, it is not a password cracker and will not break or guess an unknown password. If your PDF only carries owner-level permission restrictions (printing, copying) with no open password, you can leave the password field empty and those restrictions are lifted. It is the exact counterpart of our Password-protect PDF tool.

Frequently asked questions

Are my files uploaded to a server?

No. Every operation runs inside your browser tab using JavaScript and WebAssembly. Your file is read into memory on your own device, processed there, and the result is offered as a local download. Nothing is transmitted to Sunasty or any third party. You can verify it yourself: open your browser DevTools, go to the Network tab, and watch, no request carries your file.

Can it remove a password I do not know?

No. This is not a password cracker. You must supply the correct password that opens the PDF, the tool simply removes the protection you are already able to bypass. If the password is wrong, qpdf reports an invalid password and nothing is produced.

What is the difference with Password-protect PDF?

They are opposites. Password-protect PDF adds a password and encryption to a PDF; Unlock PDF removes a password you already know so the file opens without prompting. Use the two together to change a PDF’s password.

Does it also remove printing / copying restrictions?

Yes. Decrypting the PDF removes both the open password and any owner-level permission restrictions (such as no-printing or no-copying). For a PDF restricted only by an owner password, you can leave the password field empty.

Does it work offline?

Yes, once the page has loaded. Because the processing happens on your device, you can disconnect from the network and the tool keeps working. This is the clearest proof that your data never leaves your machine.

Is it free? Do I need an account?

It is completely free and requires no sign-up. There are no watermarks, no daily limits and no tracking cookies needed to use the tool.