UnderByte

Hide secret messages and files inside images using LSB (Least Significant Bit) steganography. Your data is embedded invisibly in the pixel data of lossless image formats.

Encode: Hide text or files inside an image

Decode: Extract hidden data from an encoded image

• Supports lossless formats: PNG, WebP lossless, GIF, BMP, TIFF, APNG, PPM, PAM, ICO

• You can upload lossy formats (JPEG, lossy WebP) but they won't be written to (encoding requires lossless formats)

• Optional XOR encryption for additional security

Step 1: Upload Image

Step 2: Choose Operation

Upload an image first to enable operations