• Products NEW
  • Features
  • Enterprise
  • Resources
  • Blog
  • Download
  • Pricing
  • 2nd Anniversary
    24 hours left

Chat with Any PDF. Get Instant Summaries and Answers with AI Assistant Online. Use It Now

Make PDF Protected in 5 Reliable Options

Password Protect Your
PDFs from Opening

Set open password to protect your documents against unauthorized access.

How to Lock PDFs from Opening
  • 2 Encryption Ciphers

    AES | RC4

  • 3 Encryption Levels

    128-bit RC4 | 128-bit AES | 256-bit AES

Buy Now
set password for pdf to prevent from opening protect PDF from editing protect PDF from copying protect PDF from printing Choose the Encryption level to encrypt PDF

Password Protect PDF from
Copying, Editing, Printing

Define permissions to limit others from editing, printing, commenting on your documents, and more.

How to Add Editing Permission to a PDF
  • 3 Printing Permissions

    Printing disallowed, low-RES, high-RES

  • 6 Editing Permissions

    Deny edits, page management, copying, form-filling, signing, etc.

Buy Now
manage PDF permissions manage permissions of PDF set permissions for PDF PDF permission management manage permissions of PDF files

Redact PDF for Protecting
Sensitive Information

Permanently black out or white out pages or key phrases in PDF to protect sensitive information.

How to Redact a PDF
  • Mark for Redaction

  • Redact Pages

  • Find Text & Redact

Buy Now
black out PDF redact PDFs

Keep Files Hidden and Secure on iPhone and iPad

Secure private files in UPDF's security space with password or Face ID on iPhone or iPad.

How to Add Files to Security Space
  • All Files Accepted

    Documents, audios, videos, images, etc.

  • 3 Encryption Options

    Password & Face ID & touch ID

Free Download
make pdf protected by adding files to security space security space of UPDF iOS UPDF security space to lock PDF

Protect PDF with Watermarks

Watermark PDFs for copyright protection, status marking, and prevention of unlawful use.

How to Add Watermarks to a PDF
  • 3 Watermark Types

    Add text, image or PDF as watermark

  • 8 Tiled Options

    Adjust tile spacing and angle as needed

Buy Now
Apply watermarks to PDF customize the watermark to PDF add watermarks to PDFs to protect PDF

Tips and Tricks for How to Protect PDF Files Explore More

password protect pdf

How to Password Protect PDF Using 10 Easy Methods

password protect pdf without acrobat

How to Password Protect PDF Without Acrobat?

redact pdf

What Is Redact PDF and How to Redact PDF

PDF redaction tools

The Top 5 PDF Redaction Tools and How to Use Them

what is pdf password

What is a PDF Password and How to Add a Password

Other Features of UPDF

UPDF is an all-in-one PDF solution - here are some other great features:

Protect Your PDFs with UPDF Now


Supports macOS 10.14.6 or later Download from Mac App Store

Free Download


Supports Windows 7 or later

Free Download


Supports iOS 14.0 or later

Free Download


Supports Android 6.0 or later

Free Download
You can use this limited time coupon to purchase designated UPDF PRO or AI products.

Get limited
time coupons !

Click to receive and use it
Extra {couponPrice}% off coupon Extra ${couponPrice} coupon

We use cookies to ensure you get the best experience on our website. Continued use of this website indicates your acceptance of our privacy policy.