100% Free

Secure PDF Online for Free

Protect your sensitive PDF documents with password protection. Keep your confidential information safe and secure.

Go to Secure Tool

How to Secure Your PDFs

1. Upload Your PDF

Drag and drop your PDF file into the secure tool area.

2. Set Password

Choose a strong password to protect your document.

3. Download Secure PDF

Get your password-protected PDF ready for download.

Why Choose PushPDF for PDF Security?

Strong Encryption

Uses industry-standard encryption to protect your PDF documents.

Password Protection

Add strong password protection to prevent unauthorized access.

Secure Sharing

Share your protected documents with confidence.

Fast Processing

Secure your PDFs in seconds with our optimized processing.

User-Friendly

Simple interface that works on any device.

Instant Download

Download your secured PDF immediately after processing.

PDF Security Best Practices

Strong Passwords

  • • Use at least 8 characters
  • • Include uppercase and lowercase letters
  • • Add numbers and special characters
  • • Avoid common words or personal info

Safe Sharing

  • • Share passwords separately from files
  • • Use secure communication channels
  • • Consider expiration dates for sensitive docs
  • • Keep backup copies in secure locations

Frequently Asked Questions

Is this PDF security tool really free?

Yes, our online PDF security tool is completely free to use, with no hidden costs or subscriptions. You can secure as many files as you need.

How strong is the PDF encryption?

We use industry-standard AES encryption to protect your PDF documents. The security level depends on the strength of the password you choose.

Can I remove password protection later?

Yes, you can use our "Unlock PDF" tool to remove password protection if you have the correct password.

Is my data secure when processing PDFs?

Absolutely. We use advanced encryption to protect your files during upload and processing. All uploaded files are automatically deleted from our servers after a short period.

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Ready to Secure Your PDFs?

Join millions of users who trust PushPDF for their document security needs

Start Securing PDFs Now