How to Secure a PDF with a Password (Free Online Guide)

Want to lock your PDF with a password before sharing it online? Here’s a free and easy way to password-protect any PDF without installing software. Just upload, set a password, and download the secured version!

🔒 Why Password-Protect a PDF?

• Prevent unauthorized access
• Secure sensitive information
• Ensure only the right people can open it

🛠️ Step-by-Step: How to Add Password to a PDF Online

Step 1: Use a Free Online PDF Locker

Try one of these trusted tools:

• SmallPDF
• iLovePDF
• PDF2Go

Step 2: Upload Your PDF File

Click “Upload” and select the file you want to protect.

Step 3: Set a Strong Password

Choose a strong password (you can generate one here on our site) and enter it in the tool.

Step 4: Lock & Download the PDF

Click “Protect” and then download your newly locked PDF. Done!

✅ Best Practices

• Use a unique, strong password
• Never share the password via email without encryption
• Save a copy of the password securely

🔗 Related Tools & Articles

• Remove PDF Password Online
• Top Password Protection Tools (2025)

🧠 Final Tips

Securing your PDF takes less than a minute — but can save you hours of headache if it falls into the wrong hands. Always password-protect files before sharing sensitive info.