Protect a PDF with an opening password
A document needs an opening password before being sent.
Open Protect PDF →Follow these steps
- Choose the supported source file or files from your device.
- Choose an opening password of at least eight characters.
- Export the encrypted PDF and reopen it using that password.
The document and the intended outcome
A document needs an opening password before being sent. Choose a long passphrase, confirm it, create the protected copy and test correct and incorrect passwords in a reader.
Make this example work for your file
For a confidential attachment, communicate the opening password through an appropriate separate channel. Test the download with the correct and an incorrect password. Encryption controls opening, not what an authenticated recipient can do afterwards.
Choose only the settings this case needs
Use at least eight characters and prefer a longer memorable passphrase. Keep the password securely and share it separately from the document when appropriate.
When the example needs a different approach
The tool does not provide password recovery. Keep a safe original and a secure password record rather than expecting an encrypted copy to be recoverable.
Check the result
Keep the password safely and share it separately. There is no password recovery service.
Keep the original. When this task produces a file, reopen the download in the application where you will use it and inspect the affected pages. An illustration explains the operation; it is not a recorded processing test.
Practical tips
- Use at least eight characters and prefer a longer memorable passphrase. Keep the password securely and share it separately from the document when appropriate.
- Re-enter both carefully and use Show password only in a private environment. Do not paste the password into a public issue or screenshot.
- The tool does not provide password recovery. Keep a safe original and a secure password record rather than expecting an encrypted copy to be recoverable.
Questions
The two password fields do not match?
Re-enter both carefully and use Show password only in a private environment. Do not paste the password into a public issue or screenshot.
The password is forgotten?
The tool does not provide password recovery. Keep a safe original and a secure password record rather than expecting an encrypted copy to be recoverable.
What is this tool useful for?
Require an opening password for a copy of your document.
What should I check in the result?
Keep the password safely and share it separately. There is no password recovery service.