Unlock PDF

Runs in browser PDF Security & Privacy

Enter the password once, and download the same document without encryption — no more prompts, no more disabled printing or copying. Works only with the correct password; there is no bypass.

Privacy: Processed locally in your browser. Your file is not uploaded.

How do PDF passwords, permissions and redaction work?

PDF encryption (ISO 32000, AES-256 in current files) has two passwords: the user password opens the document, the owner password controls permissions such as printing, copying and editing. Permissions are advisory flags that compliant readers honour, not a cryptographic barrier. Redaction is different from covering: a black box drawn over text leaves the text in the file, whereas true redaction removes it from the content stream — and metadata, attachments and thumbnails can leak what the pages no longer show.

Security note: Before sharing a redacted or "cleaned" PDF, inspect its metadata and text layer: what a viewer cannot see may still be in the file. Permissions stop honest readers, not determined ones.

Read the guide: How to Edit a PDF Without Uploading It

How to use Unlock PDF

  1. Drop the protected PDF and enter its password when asked.
  2. For a file that opens without a password but is restricted, enter the owner password in the option.
  3. Click "Unlock PDF".
  4. Download the unencrypted copy.

Unlock PDF features

  • Removes the open password and all restrictions with the known password
  • Owner-restricted files need the owner password
  • Content, forms and metadata kept
  • Reports the cipher that was removed
  • No cracking, no bypass
  • Local processing

Unlock PDF example

Remove a password before archiving

Input:

invoice-locked.pdf + password

Output:

invoice-unlocked.pdf — no password, no restrictions, same content

Frequently asked questions about Unlock PDF

Can it unlock a PDF without the password?

No. The file is encrypted and cannot be read without the key; this tool decrypts it with the password you know and saves it without one. It does not crack, guess or bypass passwords.

My PDF opens without a password but I cannot print or copy. What do I need?

That file has owner-only restrictions. Enter the owner password in the tool and the restrictions are removed. Without it, the restrictions stay.

Is the content changed?

No — pages, images, forms and metadata are kept; only the encryption is removed and the file is re-saved.

Is my PDF uploaded to a server?

No. The file is opened and processed by your browser with WebAssembly and JavaScript; nothing is sent to Mutqan Soft or anyone else. Close the tab and the file is gone. Downloading the result needs a free account — no subscription, no payment.

Technical notes

The document is decrypted by pdf-lib with the supplied password, the orphaned /Encrypt dictionary is dropped, the trailer /Info reference is recovered and the file is re-saved unencrypted. If the password does not authenticate as user or owner password, the operation fails with "wrong password".

References