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Image Steganography

Hide secret text messages inside images using LSB encoding with optional AES-256 encryption. Your data never leaves the browser.

PNG or BMP only — lossless formats preserve hidden data intact.

Drop a PNG or BMP image here

or click to browse

The text you want to hide inside the image.

Optional AES-256 encryption for your hidden message.

Optional

How LSB Steganography Works

1

Pixel Manipulation

Each pixel has RGB values (0-255). The least significant bit (LSB) of each channel can be flipped without visible change to the image.

2

Binary Encoding

Your message is converted to binary. Each bit replaces the LSB of a color channel. 1 character = 8 bits = ~3 pixels modified.

3

Invisible Result

The modified image looks identical to the original. Only someone with this tool (and the password, if set) can extract the message.

Why lossless formats only?

JPEG and WebP use lossy compression that alters pixel values — destroying the hidden data. PNG and BMP preserve every pixel exactly, keeping your message intact. Always share stego-images as PNG files.

Frequently Asked Questions

Is this steganography tool free?
Yes, completely free with no signup required.
Is my data private?
Yes. All encoding and decoding happens entirely in your browser. Your images and messages never leave your device.
How does steganography work?
This tool uses Least Significant Bit (LSB) encoding to hide text data in the color values of image pixels. The changes are invisible to the human eye.
Is the hidden message encrypted?
Optionally, yes. You can enable AES-256 encryption with a password, making the hidden message unreadable even if someone extracts it from the image.