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Password Protect PDF

Protect your PDF with AES-256 encryption and control printing, copying and editing permissions.

Select PDF Files

or drag and drop your PDF files here

Supports PDF files only • Maximum 20 files

AES-256 Encryption
Browser Processing
No File Storage
01

Upload PDF

Select the PDF document you want to protect with a password.

02

Set Password

Create an open password and choose printing, copying and editing permissions.

03

Protect & Download

Apply AES-256 encryption and download your password-protected PDF.

Password Protect PDF Online – Secure PDF with AES-256 Encryption

When you share confidential reports, contracts or personal documents as a PDF, you may want to prevent unauthorized access. The Password Protect PDF tool helps you secure your PDF with strong AES-256 encryption and control what readers can do with the document, all directly in your browser.

What protection can you apply?

  • AES-256 encryption – strongest PDF security standard
  • Open password – required to open and view the PDF
  • Owner password – optional, for advanced permission control
  • Control printing – allow or disallow printing
  • Control copying – allow or disallow copying text and images
  • Control editing – allow or disallow modifying the document
  • Works in browser – no file upload, file stays private
  • Shows encryption type and output file size before download

Why protect a PDF with a password?

A protected PDF prevents unauthorized viewing if the file is shared by mistake or downloaded by someone else. Permission settings help you prevent copying of sensitive content or unwanted editing. This is useful for legal documents, financial reports, resumes with personal data and business proposals.

Remember that if you forget the open password, no one can recover it, including Smart Maker. Store your password safely.

How to password protect a PDF

  1. Upload the PDF you want to protect.
  2. Set an open password and confirm it.
  3. Optionally set an owner password – auto generated if left blank.
  4. Choose permissions for printing, copying and editing.
  5. Click Protect PDF and download the encrypted file.

Privacy and pricing

All encryption happens locally in your browser. Your PDF is not uploaded to any server and no file is stored. Only resume and biodata tools need login. The tool is free forever, no signup, no watermark, mobile friendly and supports unlimited use.