Unlock PDF

What this PDF unlocker does

Drop a protected PDF and get back an identical copy with the protection removed. There are two kinds of protection and the tool handles both. If the file needs a password just to open, type the password — the one you were given or set yourself — and the output opens without it. If the file opens fine but refuses to print, copy text or be edited (an owner password with restrictions, very common with forms, e-books and scanned statements), no password is needed at all: the restrictions are removed the moment you drop the file, because that kind of lock only asks the reader to behave, not the file.

The document itself is untouched: pages, text, images, fonts, bookmarks, forms and annotations are all preserved byte for byte; only the encryption layer is stripped and the file is rewritten. The work is done by QPDF, the same open-source engine used by many desktop PDF utilities, compiled to WebAssembly and running inside your browser tab. The protected file and its password stay on your device — nothing is transmitted, which is exactly what you want for bank statements, payslips, contracts and ID documents.

How to use it

Drop or choose the PDF. The tool checks it immediately. If it says the file is not protected, there is nothing to do. If it says only restrictions were found, the unlocked copy appears right away. If it asks for the password, type it (tick Show password to see what you type), press Unlock PDF and download yourfile-unlocked.pdf. A wrong password is reported instantly; nothing is sent anywhere, so you can try again as often as you like.

The unlocked file can continue to any other tool here — Merge PDF, Organize PDF, Compress PDF, Add page numbers — all of which refuse encrypted input. To lock it again with a new password or different permissions, use Protect PDF.

Common pitfalls

This tool does not crack passwords. If a file requires a password to open and you do not have it, nothing here — or on any honest website — will open it; AES-256 encryption is not guessable. Unlocking is for documents you are entitled to use: your own files, statements sent to you with a password, documents your organization distributes with restrictions. Removing protection from someone else's work may be a licence or copyright violation.

A PDF that opens but shows a Secured badge and blocks printing usually has an owner password with restrictions; this tool removes those without asking for anything. Some files carry both an open password and restrictions — the open password is enough, both layers go. Digital signatures survive the rewrite but may show as invalid afterwards, because the signed bytes changed; that is expected. Very old files encrypted with 40-bit RC4 work too.

Background: how PDF protection works

A protected PDF encrypts its content streams with a key derived from a password. Two passwords are defined: the user password, needed to open the file, and the owner password, which unlocks the permissions. When only an owner password is set, the file's key is still derivable without any password (the user password is empty), so readers can open it — they simply honor the permission flags voluntarily. Decrypting such a file needs no secret at all; it is the reader, not the cryptography, that enforces the restrictions.

When a user password is set, the content genuinely cannot be read without it. Given the correct password, QPDF derives the key, decrypts every object and writes a plain PDF with the encryption dictionary removed. Modern files use AES-256 (PDF 2.0, revision 6); older ones use AES-128 or RC4. Everything happens in WebAssembly in a worker thread; the 1.3 MB engine is downloaded once, on first use, and cached. The page works offline after that.

When you need to unlock a PDF

Bank statements, credit-card bills and payslips that arrive with a password (often your date of birth or ID number) and that you want to file, search or merge without typing it every time. Insurance and tax documents to hand to an accountant. Forms that block editing so you cannot fill them or add a signature. Reports and e-books you bought that refuse to print or to have a paragraph copied. A contract that was locked by a colleague who has since left. Documents that other tools reject because they are encrypted.

On this site the usual path is: unlock here, then merge, organize, sign or compress, and if it must be locked again, protect it with your own password.

Frequently asked questions