Encrypt Decrypt Features Get App
verified_user Military-Grade Encryption

Encrypt Your Files
In Your Browser

Protect any file with AES-256-GCM encryption directly in your browser. No uploads. No servers. Your data never leaves your device.

enhanced_encryption Encrypt a File lock_open Decrypt a File
AES-256 Encryption
GCM Auth Mode
150K+ PBKDF2 Rounds
0 Data Sent
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Encrypt File

Select a file, set a strong password, and encrypt it securely with AES-256-GCM

cloud_upload

Drop your file here

or click to browse

Any file type • Max 100MB • Processed locally
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Decrypt File

Open .ufenc files encrypted by UniDoc — either from the app or this website

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Drop your .ufenc file here

or click to browse

Only .ufenc files • Processed locally
security

Security Features

Enterprise-grade encryption, available to everyone

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AES-256-GCM

Military-grade authenticated encryption. The same standard used by governments and financial institutions worldwide.

key

PBKDF2-SHA256

150,000+ iterations of key derivation. Makes brute-force attacks computationally infeasible even with powerful hardware.

devices

100% Client-Side

Everything happens in your browser. No file is ever uploaded to any server. Zero-knowledge architecture.

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Integrity Verification

GCM authentication tag and SHA-256 hash ensure your files haven't been tampered with during storage or transit.

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Secure Key Sharing

Generate one-time key shares with expiration. Share keys separately from encrypted files for maximum security.

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App Compatible

Files encrypted here use the exact same .ufenc format as the UniDoc app. Encrypt on web, decrypt on mobile — and vice versa.

How It Works

Three simple steps to protect your files

1

Select Your File

Choose any file up to 100MB. Documents, images, videos — anything you want to protect.

2

Set a Password

Use a strong password (12+ characters) or let us auto-generate a cryptographically secure one for you.

3

Download Encrypted

Get your .ufenc encrypted file. Decrypt it anytime on this site or in the UniDoc app with your password.

star Full Power on Mobile

Get the UniDoc App

Unlock the full encryption suite on your mobile device. The UniDoc app offers everything you see here — plus a hidden vault, biometric lock, QR code key sharing, and support for 50+ document formats.

enhanced_encryption AES-256-GCM File Encryption
qr_code_2 QR Code Key Sharing
fingerprint Biometric Authentication
visibility_off Hidden Encrypted Vault
description 50+ Document Formats
timer Auto-Expiring Keys
GET IT ON Google Play
Download on App Store
shield Encryption Tools
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Encrypt File AES-256 with key sharing
key
Password Protect Add password to any file
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Decrypt File Password or QR code
visibility_off Hidden Vault

Encrypt on Web. Decrypt on Mobile.

The same .ufenc format works everywhere. Encrypt a file here and open it in the UniDoc app — or encrypt on your phone and decrypt here. Complete cross-platform compatibility.

enhanced_encryption Start Encrypting phone_android Get the App

What is UniDoc?

UniDoc is a secure browser-based file encryption and document conversion tool. It allows you to encrypt, decrypt, and manage files directly inside your browser without uploading them to any server. Your files never leave your device, ensuring maximum privacy and security.

Why Use Offline File Encryption?

Most online file tools upload your documents to external servers. UniDoc uses local browser processing with AES-256 encryption, which means your sensitive files remain completely private. No data storage, no tracking, and no cloud dependency.

Key Features of UniDoc

How to Use UniDoc

Simply select your file, choose encryption or conversion, and download the processed file instantly. Everything happens securely inside your browser.

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