http://xmr.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/opsec/steghide/index.html
In our case, it tells us that it can embed 232 KB and asks wheter an attempt should be made at reading embed data without extracting. As there is nothing embedded yet, we decline with n . "apod20240824.jpg":
format: jpeg
capacity: 232.6 KB
Try to get information about embedded data ? (y/n) The PDF is only 180 KB, so it fits.