Protect PDF
Add a password to a PDF so only people who know it can open it.
Processed in your browser, nothing uploaded
or drop files here
PDF1 file
What is Protect PDF?
Protect PDF is a free online tool from EveryHelper that works right in your web browser. Add a password to a PDF so only people who know it can open it. Your file is processed on your own device, so it is never uploaded, and there is nothing to sign up for or install.
| You add | One PDF file |
|---|---|
| You get | One PDF file |
| Where it runs | Your browser, on this device (nothing uploaded) |
| Price | Free, no sign-up |
How to use Protect PDF
- Select one PDF file or drop it on this page. Files can be up to 50 MB.
- Enter a password of 4 to 128 characters.
- Click “Protect PDF”. Your browser adds the password.
- Download the protected PDF. It will now ask for the password when opened.
Updated
Frequently asked questions
What kind of encryption is used?
Protect PDF encrypts your file with AES-256. When someone opens the result, their PDF viewer asks for the password, and the content only appears once the correct one is entered. The password can be anywhere from 4 to 128 characters long.
Can I block only printing or editing?
No. Protect PDF uses the password to block opening the file. Anyone who knows the password can also print, copy and edit the document after opening it, so share the password only with people who are allowed to see the content.
What if I forget the password?
We can't recover a password set with Protect PDF, because we never store your file or your password. Keep an unprotected copy of the original before adding a password, and write the password down somewhere safe.
Is it free?
Yes. Use it free in your web browser, with no sign-up or software to install.
Are my files stored on a server?
No. This tool runs inside your browser, so your file is never sent to a server and never leaves your device.
Which files can I use?
You can add one PDF file at a time.