Z

Remove PDF Password

Remove a known password from a PDF you can already open, locally in your browser.

Runs in your browser — files never leave your device

How it works

Drop a protected PDF, type the password you normally use to open it, and download an unlocked copy — same pages, no more prompt. Decryption happens in your browser through an open-source fork of the pdf-lib library: it derives the document key from your password, decrypts the file, and re-saves it with the encryption removed, named unlocked- plus the original filename.

Be clear about what this is not: a password cracker. PDF decryption mathematically requires the key derived from the correct password — if you don’t know the password, this tool cannot open the file, and neither can any other honest one-click tool. A wrong password simply produces an error. It removes protection from documents you can already open; that is the entire job.

Either of the file’s passwords works: the user password that opens it, or the owner password that grants full access — whatever you type is checked against both. The standard PDF encryption schemes (RC4 and AES, which cover ordinary protected PDFs such as bank statements, payslips, and e-signed contracts) are supported; files wrapped in proprietary DRM use different machinery and fail with an error instead.

Why unlock a file you can already open? Friction. You retype the password at every open, and most PDF processing tools — merge, split, compress, watermark — refuse encrypted input outright, so unlocking is step one of any further editing. Archiving is the other big case: bank-issued statements often carry a default password you won’t remember in five years. Only unlock documents you own or are authorized to change.

Password-protected files are sensitive by definition, which makes local processing the headline feature: uploading a protected PDF together with its password to a web service hands both to someone else. This tool transmits neither. The file is decrypted in your browser’s memory, the unlocked copy downloads straight from it, and nothing is sent, logged, or kept.

Frequently asked questions

Can this recover or crack a password I don’t know?
No, and no tool of this kind can. The document key is mathematically derived from the correct password, so without the password there is nothing to decrypt with. This tool removes protection only from PDFs you can already open — a wrong password just produces an error.
Do I enter the user password or the owner password?
Whichever you have. The password you type is checked against both of the file’s password records, so the open (user) password and the full-access (owner) password both work. Most protected files people handle day to day use a single password for both anyway.
Why unlock a PDF I can already open?
Convenience and tooling. You stop retyping the password at every open, and other PDF tools — merge, split, compress, watermark — can then process the file, since most refuse encrypted input. It’s also sensible archiving: bank-issued statements often use default passwords you won’t remember years later.
Is the unlocked copy identical to the original?
In content, yes: the same pages, text, images, fonts, and layout, just stored without encryption. The file is re-saved rather than byte-copied, so its internal structure and exact size can differ slightly, but nothing visible changes and text stays selectable and searchable.
Are there PDFs this can’t unlock?
Yes. It handles the PDF standard’s own password encryption — RC4 and AES — which covers ordinary protected files. Documents guarded by proprietary DRM or certificate-based rights management use different mechanisms and will fail with an error rather than unlock.
Are my file and password uploaded to a server?
No — neither one. The PDF is decrypted entirely in your browser’s memory using the password you type, and the unlocked copy downloads directly from there. Nothing is transmitted, logged, or stored, which is exactly what you want for the sort of documents that carry passwords in the first place.

Related tools