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Why Choose UPDF
UPDF
AI-powered PDF Editor for Windows, Mac, iOS, and Android. One License, All Platforms.
Try Free Now - Pricing
UPDF
AI-powered PDF Editor for Windows, Mac, iOS, and Android. One License, All Platforms.
Try Free NowYour Documents, Your Control
Encrypt PDF documents by adding password, redacting, with security space, and adding watermark feature.
Support: Windows · macOS · iOS · Android
Set open password to protect your documents against unauthorized access.
How to Lock PDFs from Opening2 Encryption Ciphers
AES ｜ RC4
3 Encryption Levels
128-bit RC4 ｜ 128-bit AES ｜ 256-bit AES
Define permissions to limit others from editing, printing, commenting on your documents, and more.
How to Add Editing Permission to a PDF3 Printing Permissions
Printing disallowed, low-RES, high-RES
6 Editing Permissions
Deny edits, page management, copying, form-filling, signing, etc.
Permanently black out or white out pages or key phrases in PDF to protect sensitive information.
How to Redact a PDF Buy NowSecure private files in UPDF's security space with password or Face ID on iPhone or iPad.
How to Add Files to Security SpaceAll Files Accepted
Documents, audios, videos, images, etc.
3 Encryption Options
Password & Face ID & touch ID
Watermark PDFs for copyright protection, status marking, and prevention of unlawful use.
How to Add Watermarks to a PDF3 Watermark Types
Add text, image or PDF as watermark
8 Tiled Options
Adjust tile spacing and angle as needed
Tips and Tricks for How to Protect PDF Files Explore More
UPDF is an all-in-one PDF solution - here are some other great features:
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