How does Fable 5.1 hide messages in images?

Fable 5.1, a steganography tool, hides messages in images by using the least significant bits of the pixel values to encode the message. The tool can also encode messages into the middle bits of pixel values, and supports various image formats, including JPEG, PNG, GIF, and BMP. Fable 5.1 can hide messages up to 1.44 MB in size, and the encoded message can be extracted using the same tool.