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Unlock PDF

Remove password protection from your PDF (password required)

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Drop a PDF file here or click to browse

Important

You must know the password to unlock a PDF. We cannot crack or bypass PDF passwords. This tool only removes protection from PDFs when you provide the correct password.

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All processing happens on your computer. Your PDF and password never leave your device.

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This tool decrypts a protected PDF entirely in your browser and saves a new copy with no password and no permission restrictions. PDFs carry two independent passwords: an owner password that only restricts printing, copying, or editing, and a user password that blocks opening the file at all. If only the owner password is set, the file opens and decrypts without you entering anything, since the PDF spec lets readers derive the key from a blank user password. If a user password is set, you must type the exact password before the tool can strip it. The surprise: this tool cannot crack, guess, or bypass a password you don't know.

Worked example

Input
A PDF report protected with only an owner (permissions) password - no password is needed to open it in a normal viewer, but printing and copying are blocked.
Output
The same report with encryption removed entirely: it opens, prints, and allows text and image copying exactly like an unprotected PDF, and no password prompt ever appears during unlocking.
Why
Because no user password was set, the decryption key can be derived from the default blank user password defined by the PDF security handler, so the owner-only restriction is removed without needing any password input.

How it works

Two-password model
A PDF's Standard Security Handler supports a user password (required to open the file) and an owner password (sets permission flags like print/copy/edit, enforced only by compliant readers). This tool reads the encryption dictionary to tell which is present: if the user password is blank, it can decrypt immediately; otherwise it needs the password you enter.
Local decrypt and rewrite
Using a PDF-parsing library running in the browser, the tool computes the file's decryption key from the password (or the blank default), decrypts every encrypted stream and string in the document, then writes a fresh PDF with the encryption dictionary and permission flags removed. The file never leaves your device during this process.

When to use it

  • You inherited an old scanned contract that's owner-password restricted from years ago; you have full rights to it and need to copy clauses into a new document.
  • A vendor sent an invoice PDF with an open password in the email body; you want a permanent, password-free copy for your accounting archive.
  • An automated pipeline rejects encrypted PDFs outright, so you strip protection from files you're authorized to redistribute before feeding them into that pipeline.

Worth knowing

  • If the PDF requires a password to open and you don't know it, this tool cannot help - it has no way to recover or brute-force a real password, especially under AES-256.
  • Removing password protection does not remove redaction marks, digital signatures, watermarks, or DRM-style wrappers some vendors add outside the standard PDF security handler.
  • The tool does not verify you have the right to unlock a given file; that judgment call belongs to you, since owner permissions often exist for a legal or contractual reason.

Frequently asked

Can this recover a password I forgot?
No. If a password is required to open the PDF, you must know it. This tool removes protection once decrypted; it does not attempt to guess or crack the password. Even a short numeric password is not brute-forced, since that could take an impractical amount of time in-browser.
Will the unlocked PDF look different from the original?
No. Once unlocked, the underlying content, fonts, images, and page layout are byte-for-byte the same as the original - only the encryption dictionary and permission flags are stripped out. If the PDF also contains a digital signature, removing encryption may invalidate that signature, since the file itself changes.

References

All PDFb2 tools