Encrypt text in image

On this page you can encrypt text into a picture. Text characters must be Unicode-encoded with values from 32 (inclusive) to 32767 (inclusive). You can decode it here . Unfortunately, the final image does not support transparency. You can encrypt W*H/16 characters, where W is the width of the picture, and H is the height of the picture. You can also use any encryption key. For decryption, you need an encrypted picture and this key.