Protect PDF
Protect PDF free in your browser. Add a password, lock your PDF from unauthorized access, and download the encrypted file without uploading documents to servers.
Drag your file here or Choose file
Supported format: PDF
Minimum 4 characters. Save your password—we cannot recover it.
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How to protect PDF with a password
- Select or drag your PDF onto the upload area.
- Enter and confirm the password to protect pdf and lock pdf from unauthorized access.
- Click «Protect PDF with password» and download the encrypted file ready to share securely.
What is it for?
Protect pdf with a password is essential when sending contracts, payslips, or medical data and you need to password protect pdf before sharing by email or chat.
Lock pdf free in the browser when you want to restrict who can open a financial report, business proposal, or internal document without desktop software.
Encrypting the PDF locally keeps data private—the document is not uploaded to external servers while you protect pdf in seconds.
Frequently asked questions
Can I protect pdf free without installing anything?
Yes. FORMARTIO lets you password protect pdf directly in your browser. You don't need Adobe Acrobat or an account.
What if I forget the password after I lock pdf?
The password is not stored by FORMARTIO. If you lose it, you won't be able to open the protected PDF—save it in a secure password manager.
Is it safe to password protect pdf online here?
Yes. Encryption runs in your browser and the PDF is not sent to our servers, making it easier to protect pdf containing sensitive information.
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