for anyone who wants to try a consumer grade stegongraphy in browser. I built some thing here. Its free and loads a static page with a wasm binary. Once the page loads everything is handled in the browser.

You provide a carrier file (currently .mp4, .pdf, .jpeg or .png ) and impregnate it with an entire encrypted file system with a full viewer and gallery mode. Also supports streaming, so you can actually encrypt a a full blueray movie and run range requests.

https://hidefile.app

Does this actually embed the data using stenography, or does it just append it (encrypted) to an area of the file that the carrier format doesn't care about? The advantage of stenography is that it should be difficult for a middleman to know that there even is any data embedded.