I built a steganography app that embeds encrypted messages into images.

It lives here: https://stegg.alifeinbinary.com

It's as much of an art project as it is a programming project. The images that it generates are visual representations of binary code translated from the text you enter. If you enable encryption it converts it to a hash. You can download the image, send to someone along with the password and they'll be able to decrypt it by uploading it to the app. Or you can post it to the time line and send them the link. All messages are truly private. No raw text text is sent to the server.

It's not vibe coded, I made it with typescript React. The app has a link to the github repo if you want to look under the hood.