Private. Local. Zero Uploads.

Protect PDF

Add a password to your PDF to keep it safe. Lock your files in your browser for total privacy.

Features

Set a password to open the document

Choose an owner password for more control

Easy password confirmation to avoid mistakes

Private processing right in your browser

Works on all computers and phones

Strong encryption to keep data safe

No watermarks added to locked files

Download your protected PDF instantly

Drag your PDF file into the box or click to select a file from your device.

Type the password you want to use to lock the file. You can also set a separate password for editing.

Click the protect button. Your locked PDF will download immediately.

Lock contracts and financial files with a password before sending them.

Keep tax returns and medical records safe with strong encryption.

Make sure only the right people can open your documents.

Lock files with personal data to follow laws like GDPR or HIPAA.

What is the difference between passwords?

The user password is for opening the file. The owner password is for changing things like printing or editing.

What if I forget my password?

We cannot recover forgotten passwords. The file cannot be opened without it, so keep it in a safe place.

Is the lock strong?

Yes. The tool uses standard PDF encryption that works with all major PDF apps.

Does it work without internet?

You need an internet connection to open the site. After the tool loads, password protection runs locally on your device and files are not uploaded.