Protect PDF with Password Online
The fastest and most secure way to encrypt your PDF documents. Add a strong password to your files for free with 100% private browser-side protection.
Select PDF to Secure
or drag and drop your file here
How to Add a Password to PDF?
Securing your PDF documents with Toolsmob is effortless and requires no technical knowledge. Simply follow these steps:
- Upload: Select the PDF file from your computer or mobile device.
- Choose: Enter a strong password to encrypt your sensitive data.
- Encrypt: Our browser-side engine applies high-level security locally.
- Download: Save your new, password-protected PDF instantly.
Why Choose Toolsmob to Encrypt PDFs?
At Toolsmob, your privacy and security are our foundations. Unlike traditional online tools, we process your encryption directly in your browser.
This means your sensitive documents never leave your computer. Your data is never sent to a server, making Toolsmob the safest online PDF locker for private contracts, banking statements, and personal IDs.
Questions & Answers
Yes! Once encrypted, the PDF will require the exact password you set to be opened in any reader. You can later use our ‘Unlock PDF’ tool if you wish to remove the password.
Toolsmob does not store your passwords or your files. If you forget your password, we cannot recover it for you. Always keep your passwords in a safe place.
Yes! Toolsmob offers 100% free PDF protection without any hidden fees, daily limits, or account registration requirements.