Standard-Compliant Encryption Without Sending Passwords to Cloud
Protecting tax returns, medical files, and financial statements with strong passwords before emailing is essential.
The encryption algorithm runs on your local machine: your password is never transmitted to or stored on any server.
Easy Step-by-Step Instructions
- Drag your PDF into the security box.
- Enter your desired password.
- Click 'Protect PDF' and download your encrypted file.
100% Private In-Browser Execution Guarantee
MergePDFFilesFree processes files directly on your computer or phone using WebAssembly and client-side JavaScript. Your files are never uploaded to any remote server or stored in the cloud.
Frequently Asked Questions
Q.Can anyone open the PDF without the password?
No. Any standard PDF viewer will enforce the exact password before displaying content.
Q.Do you store a copy of my password?
Never. We run zero backend servers that could receive or log passwords.
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