Spectrum Seal

Steganography is the practice of hiding secret data within an ordinary, non-secret file or message to avoid detection. Unlike encryption which scrambles data, steganography conceals the very existence of the data. Our tool uses LSB (Least Significant Bit) steganography to embed your files into image pixels.

Image steganography works by modifying the least significant bits of pixel values in an image. These changes are imperceptible to the human eye but can store data. Our tool supports both PNG and JPG formats and can hide any type of file - from text messages to documents and other images.

Yes! All processing happens entirely in your browser using WebAssembly. Your files never leave your device or get uploaded to any server. We offer optional AES-256 encryption for premium users, adding an extra layer of security. Your privacy is our top priority.

You can hide any type of file: text messages, images (JPG, PNG, GIF), PDFs, Word documents, ZIP archives, and more. The only limitation is the size of your carrier image - larger images can hide more data. The tool will automatically calculate the maximum capacity.

Without specialized steganalysis tools, it's virtually impossible to detect hidden data. The encoded image looks identical to the original to the human eye. However, statistical analysis can potentially detect steganography, which is why we offer encryption as an additional security layer.

Yes, steganography is legal in most countries. It's a legitimate privacy and security technique used by journalists, activists, and privacy-conscious individuals. However, like any technology, it should be used responsibly and ethically. Always comply with your local laws and regulations.

Encryption scrambles data to make it unreadable without a key, but it's obvious that data exists. Steganography hides the data's existence entirely - the image appears normal. For maximum security, combine both: encrypt your data first, then hide it using steganography (available in our premium plan).