Protect PDF
Add a password to your PDF. Fast, free, and completely private.
Click to select file
or drag and drop it directly here
How to use Protect PDF
Upload File
Select or drag & drop your file into the secure upload area above.
Process
Our powerful servers or your browser will process the file instantly.
Download
Save your optimized file securely. It will be deleted from our servers.
Key Features
- Lightning Fast: Results are generated almost instantly using state-of-the-art tech.
- 100% Free: No hidden costs, no premium tiers, and no subscriptions required.
- No Registration: Start using the tool immediately without providing an email address.
- Secure & Private: Files are processed locally or deleted immediately from our secure servers.
Frequently Asked Questions
Is this Protect PDF tool free?
Yes, our Protect PDF tool is completely free to use.
Can I add a password to a PDF?
Yes, you can easily add a strong password to any PDF file to prevent unauthorized access.
Can I remove the password later?
Yes, you can use our Unlock PDF tool (coming soon) to remove the password if you know the original password.
Is my password stored?
No, we never store or log your passwords. Your password is used purely for encryption and then immediately discarded from our memory.
Are my files stored?
No, all files are processed securely and deleted automatically from our servers right after processing.
What is the maximum PDF size?
The maximum supported PDF size is 50MB.
Can I protect password-protected PDFs?
No, the PDF must be unlocked before you can add a new password to it.
Does this work on mobile?
Absolutely! Our Protect PDF tool works seamlessly on all mobile devices and tablets.
Will protecting a PDF reduce quality?
No, adding a password does not alter the quality, layout, or content of your PDF at all.
Can I restrict printing or copying?
Currently, we only support full document open passwords for maximum security.