PixelVault 🔐

PixelVault is a secure, 100% client-side web application that allows users to hide and encrypt secret text messages inside PNG images using advanced Least Significant Bit (LSB) steganography and military-grade AES-256 encryption.

Live Demo

✨ Features

• LSB Steganography: Hides text data within the least significant bits of an image's pixel colors, leaving the image visually unaltered.
• Military-Grade Encryption: Integrates the native Web Crypto API to wrap text in AES-GCM 256-bit encryption before embedding.
• 100% Client-Side: Built using the HTML5 Canvas API. Zero server uploads. Your images, messages, and passwords never leave your browser.
• System-Aware Dark Mode: Automatically adapts to your OS theme preferences with a manual toggle.
• Fully SEO Optimized: Includes JSON-LD Schema markup, Open Graph tags, and structured data for maximum visibility.
• Responsive UI: Modern, lightweight interface optimized for desktop, tablet, and mobile devices.

🚀 How It Works

Encoding (Hiding a Message)

1. Select a source image (JPEG or PNG).
2. Enter the secret message you wish to hide.
3. (Optional) Enter a password to encrypt the message using AES-256.
4. Click "Encode" to process and download the new .png file containing your hidden data.

Decoding (Extracting a Message)

1. Upload a previously encoded .png image.
2. If the message was encrypted, enter the correct decryption password.
3. Click "Extract Message" to decrypt and reveal the hidden text.

Note: The encoded image must be saved and shared as a lossless .png. Sending via messaging apps that compress images (like WhatsApp) or converting to .jpeg will apply lossy compression and permanently destroy the hidden data.

🛠️ Technology Stack

• Frontend Core: HTML5, CSS3, Vanilla JavaScript
• Browser APIs: HTML5 Canvas API, Web Crypto API, FileReader API
• Deployment: Vercel

👨‍💻 About the Developer

Engineered and maintained by Dippan Bhusal, a Full-Stack Web Developer dedicated to building secure, performant, and accessible utilities for the modern web.

• Portfolio: dippanbhusal.tech
• GitHub: @kdippan
• LinkedIn: Dippan Bhusal
• Twitter / X: @dippanbhusal

☕ Support the Project

If you found this tool helpful or use it regularly, consider supporting the development and server costs:

📄 License

This project is open-source and available under the MIT License.