FREE · PDF TOOLS
Unlock PDF with Known Password.
Remove PDF encryption using the password you already know.
How to use Unlock PDF with Known Password
Choose the PDF, enter settings, generate and inspect the downloaded copy. Your original file is unchanged.
How it works
Remove PDF encryption using the password you already know. No password guessing. Maximum 200 password characters; invalid passwords fail. Processing takes place in a disposable local worker. Files are processed on your device; no PDF upload is required.
Example
Choose a local PDF and adjust the displayed settings.
Questions about Unlock PDF with Known Password
Is Unlock PDF with Known Password free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
20 MiB combined input; 200 pages for structural operations, 60 seconds for QPDF operations. No password guessing. Maximum 200 password characters; invalid passwords fail. Processing takes place in a disposable local worker. Review the downloaded document, especially page order and watermarks.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.