Protect PDF
Require a password to open your PDF. Choose whether others may print, copy or edit it.
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Your files are processed inside your browser and are never uploaded to our servers. It is free and needs no account or subscription.
How to use Protect PDF
- Choose a PDF file.
- Type a password twice and tick the permissions you allow.
- Press Protect PDF and download the locked copy.
Frequently asked questions
How strong is the protection?
It uses standard 128-bit RC4 encryption supported by every PDF viewer. Use a long password.
Can you recover a lost password?
No. Nothing is stored anywhere, so keep your password safe.
What does the owner password do?
It lets you change permissions later. If you leave it empty a random one is used.
Are my files safe?
Your files are processed inside your browser and are never uploaded to our servers. Closing the tab removes everything from memory.