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Passwords

How to remove a password from a PDF

By DeckleUpdated

To remove a password from a PDF, open Unlock PDF, choose the file, type its current password in Password and choose Remove the password. Deckle saves an unencrypted copy that opens without a password and without printing or copying restrictions. You need the correct password; the original file stays locked and unchanged.

Unlock PDF

Unlock the copy you are authorised to change

Protected source

Use the known opening password

Unlocked output

Reopen without entering that password

Removing encryption changes access, not page content

Conceptual workflow · this is a known-password operation, not password recovery or permission to edit any document.

How to remove a password from a PDF with Deckle

  1. Open Unlock PDF and choose your PDF, or drop it onto the page.
  2. Type the password that opens the PDF now in Password. If the file opens without a password but will not let you print or copy, leave the field empty.
  3. Choose Remove the password, or press Enter in the field.
  4. If the password is wrong, Deckle says "That password did not unlock this PDF. Try another password." Nothing is written and the original is untouched.
  5. Download the copy, which has "(unlocked)" added to its name.
  6. Open the download without entering anything and page through it.

The result screen reads "Password removed" with "opens without one". Before showing it, Deckle checks that the copy has no encryption, opens without a password and has the same page count and page sizes as the original.

What the unlocked copy contains

  • No encryption at all. The old encryption data is removed from the file, not left behind unused.
  • No restrictions. Printing, copying and editing limits set by an owner password go with the encryption.
  • The same pages. Page count, page sizes and content are kept.
  • Your other properties. Title, author and dates stay. The Producer property is set to Deckle.

Example: a bank sends statement-march.pdf protected with your date of birth. Unlock it with that password and you get statement-march (unlocked).pdf, which opens straight away in any reader, merges with other statements and can be filed without typing the password each time.

Restrictions without an open password

Some PDFs open normally but grey out Print or Copy. They carry only a permissions (owner) password. Leave the Password field empty and choose Remove the password: if the file has no open password, Deckle removes the encryption and the restrictions with it. The hint under the field says the same: "Leave empty if the document opens without a password."

A PDF with no password and no restrictions is refused, because there is nothing to remove. If editing is still unavailable after unlocking, the cause is usually the app or a scanned page rather than security; see why a PDF opens but cannot be edited.

Before you unlock

Only remove a password from a file you own or have permission to change. Anyone who receives the unlocked copy can open it, so keep it out of shared folders that the protected version was meant to keep it out of.

Unlocking rewrites the file. A digital signature on the original will no longer validate on the copy, so keep the signed original if anyone needs to check it.

Tips

  • Copy the password rather than retyping it. Paste it from the message or password manager it came in, so a stray capital or space does not cause a rejection.
  • Unlock before using other tools. Merge PDFs, Remove PDF metadata and the other tools ask you to unlock a protected file first.
  • Set a new password afterwards if you need one. Open the unlocked copy in Password protect PDF. The steps are in how to change the password on a PDF.
  • Delete the unlocked copy when you are done if the document is sensitive. The protected original is still where you left it.

Other ways to remove a PDF password

  • Preview on a Mac. Open the PDF with its password and choose File > Edit Permissions, where Require Password To Open Document controls the open password and the checkboxes control permissions. Click Apply. Preview changes the file you opened, so duplicate it first if you want to keep a locked version.
  • Adobe Acrobat Pro. Choose All tools > Protect a PDF, then Set security properties. On the Security tab, choose Change Settings and deselect Require a password to open the document, or Restrict editing and printing of the document for a permissions password. Acrobat asks for the permissions password if the file has one.

Frequently asked questions

Can I unlock a PDF without the password?

No. Unlock PDF removes a password you know. It does not guess, crack or bypass passwords. See can you unlock a PDF without the password for what to do instead.

Is the PDF uploaded to remove the password?

No. Deckle decrypts the file in your browser. The password is not stored, sent anywhere or written to the result record.

Which kinds of encryption can Deckle remove?

Standard PDF password encryption, including older RC4 files and current AES files.

Can I unlock several PDFs at once?

No. Each run takes one file, because each file needs its own password.

Why do I not see page previews?

A PDF with an open password cannot be read until the password is accepted, so page previews appear only after unlocking.

Related tools

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