What type of encryption is applied?

AES-256 encryption, the same standard used by banks and governments, is applied to protect your PDF.

What happens if someone tries to open the PDF without the password?

PDF viewers will prompt for a password. Without the correct password, the file cannot be opened.

Can I also restrict printing and copying?

Yes, you can set permissions to restrict printing, copying text, and editing the document in addition to requiring a password.

What if I forget the password?

Keep your password safe - there is no recovery option. If the password is lost, the PDF cannot be unlocked without it.

Is protecting a PDF free?

Yes, PDF password protection is completely free on ApnaConverter.

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Protect PDF

Add real password encryption to your PDF.

Drop your PDF here

PDF files only

Maximum file size: 100 MB

Sensitive contracts, financial reports, and personal documents deserve an extra layer of security before you share them. Our PDF Protector adds AES-256 password encryption to your file — preventing unauthorized viewing, printing, and copying — while remaining fully compatible with all PDF viewers on any device.

How It Works

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Upload PDF

Upload the PDF you want to password-protect.

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Set Password

Enter the password you want to use for protection.

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Download Protected PDF

Download the encrypted PDF that requires your password to open.

Why Use This Tool?

✓Add AES-256 encryption to your PDF files
✓Prevent unauthorised viewing, printing, and copying
✓Protect sensitive contracts, reports, and personal data
✓Password-protected PDFs open in any standard PDF viewer
✓Set permissions to restrict what recipients can do
✓Files are auto-deleted from servers within 2 hours