🔒 PDF Tools

Protect PDF with Password Online Free

Add a password to your PDF so it can't be opened without it. No file uploads — everything processes locally in your browser. 100% private and free.

0sUpload time
100%Private
$0Cost
46+Tools

✅ No signup required
🔒 Files stay on your device
⚡ Instant conversion
📱 Works on mobile

About This Tool

Sending a sensitive document — a contract, ID scan, or financial statement — is safer when it's locked behind a password only the intended recipient knows.

Filovo lets you set a password, encrypts the PDF with it, and gives you back a protected file that will prompt for that password when opened.

🔒 Protect PDF with Password Online Free

Upload your files below — everything runs right here in your browser.

📤

Drag & drop PDF file(s) here

or click to browse

Set password
Processing…

Preview

Done!
⬇️ Download

Was this helpful?

Thanks for your feedback!

How to Protect a PDF

  1. 1Click "Open Tool" below
  2. 2Upload the PDF you want to protect
  3. 3Enter the password you want to require
  4. 4Click Protect
  5. 5Download your password-protected PDF

Related Tools

Frequently Asked Questions

What happens if I forget the password?

There's no way to recover a forgotten password — keep it somewhere safe.

Does this stop someone from copying the content once it's open?

This adds an open password; use Add Watermark for visible attribution instead of a copy restriction.

Is there a password length requirement?

Use a password that's memorable to you but hard for others to guess.

Is my file uploaded anywhere?

No, protection happens entirely in your browser.