Protect PDF
Put a password on a PDF so only people who know it can open it.
Add a password to the PDF.
Choose or drag the PDF
Available in: 
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Frequently asked questions
How does the password work?
Anyone trying to open the PDF must type the password. Without it, PDF readers won't display the content.
What if I forget the password?
There's no way to recover it. Keep the password somewhere safe, and keep a copy of the original PDF without a password.
Can I prevent copying and printing?
Yes. Check the options to block printing and text copying. These blocks depend on the PDF reader respecting them.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 are free.