Unlock PDF Online – Remove a Known Password
Create an unencrypted copy of a PDF that you are authorized to edit. Enter the appropriate known password, then use the unlocked copy with other PDF tools.
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How to unlock pdf
- Choose a password-protected PDF.
- Enter its current password.
- Select Unlock PDF, then download and verify the unlocked copy.
What to know before you start
This tool does not guess or recover forgotten passwords. A document with a separate owner password may require that password to remove protection, even if another password opens the file. The unlocked copy no longer requires a password to open, so store and share it carefully. Input limits are 300 MB and 500 pages.
Frequently asked questions
Why does a password that opens my PDF not unlock it?
Some files have different opening and owner passwords. Removing protection may require the owner password.
Can I use this without knowing the password?
No. This tool requires an appropriate known password and permission to modify the document.
Local processing, no sign-up
HappyPDF processes your selected files in this browser. An internet connection is needed to load processing software. Keep your original document and review the downloaded result; editing can affect forms, annotations and digital signatures.