Back to Blogs
Password Protect PDF Files | Rune

Password Protect PDF Files | Rune

Add password protection to PDF documents. Secure sensitive files with encryption before sharing.

2 min read

Sensitive PDFs shouldn't be accessible to everyone. Password protection ensures only authorized recipients can open your documents.

Why Protect PDFs?

Confidential Information

  • Financial statements
  • Medical records
  • Legal documents
  • Personal data

Controlled Access

  • Share securely via email
  • Limit who can read content
  • Prevent unauthorized access

Compliance

  • Data protection requirements
  • Industry regulations
  • Company policies

How to Password Protect a PDF

  1. Open Rune's Protect PDF.
  2. Upload your PDF file.
  3. Enter your desired password.
  4. Confirm the password.
  5. Click "Protect."
  6. Download the encrypted PDF.

Password Requirements

Good passwords:

  • At least 8 characters
  • Mix of letters, numbers, symbols
  • Not easily guessable
  • Unique to this document

Sharing Password-Protected PDFs

Best Practices

  • Send the PDF and password separately
  • Use different channels (email PDF, text password)
  • Communicate password verbally when possible
  • Never put password in same email as attachment

Example Workflow

  1. Email the protected PDF.
  2. Text the password to the recipient.
  3. Recipient downloads PDF.
  4. Recipient enters password to open.

What Gets Protected

  • All document content
  • Images and graphics
  • Text data
  • Formatting

Can It Be Bypassed?

Strong password encryption is very secure. However:

  • Weak passwords can be guessed
  • Recipients can share the password
  • No protection replaces trust

Privacy

All PDF protection happens locally in your browser. Your documents and passwords stay on your device.

Conclusion

Password protection is essential for sensitive documents. Rune's Protect PDF adds strong encryption with just a few clicks.