http://status.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/opsec/steghide/index.html
For demonstration purposes, compare this map with its original , then look at their difference . The embedded file was a mere 4286 B in size, yet these two files differ by 6693 B in size! (The password is left as a brute-forcing exercise for the reader.) Avoid format conversions: Even "lossless" conversions from one image format to another tend to be non-reversible, making it impossible to retrieve the hidden data.