Choose the PDF
Add the unprotected document you want to secure.
Free security tool
Protect PDF online
Add browser-based password protection before sharing a sensitive PDF.
No uploads No account No daily limit
Private browser processingNo account required
Choose a file
Add one PDF to begin. Your file remains inside this browser tab.
or drag and drop hereLoads public sample PDFs. Replaces your current selection. See the example
Your files are not uploaded to Pageivo. Keep this tab open until processing finishes.
Practice before using your own files
Require a password to open a PDF
An encrypted one-page reference rejects opening without a password and opens with the correct one.
Try it: Enter your own temporary test password, protect the sample and reopen the download. The public reference below has the published sample password.
Start with these files
- Source with sample metadata42.8 KB
Compare the result
Public reference password: Pageivo-Lab-Only-2026. This is for the synthetic sample only. Use a different, unique password for your own documents.
How to use Protect PDF1 2 3
A clear, private way to finish the job.
Add AES-256 password protection before sharing a PDF. Encryption happens on your device, and Pageivo never receives or stores the password.
Create a strong password
Use at least six characters and store it somewhere safe.
Protect and download
Pageivo encrypts the PDF and prepares a password-protected copy.
Why Pageivo
Designed for useful, everyday work.
AES-256 encryption
Use modern PDF password protection supported by common readers.
Password stays local
The password is used only inside the active browser tab.
Safe original
Your unprotected source file remains unchanged.
Local processing protects your privacy
Pageivo performs this operation in your browser. Your selected file does not need to be uploaded to a Pageivo conversion server.
Questions and answers
Protect PDF FAQ
Can Pageivo recover my password?+
No. Pageivo never receives it and cannot restore a forgotten password.
Will every PDF reader open the file?+
Most modern PDF readers support AES-256, but very old software may not.
Can I protect an already encrypted PDF?+
No. Unlock it with the correct password first.
Does encryption hide the filename?+
No. Choose a neutral filename if the name itself is sensitive.