Free app · Phantom
Hide anything in plain sight.
Lock passwords, recovery codes or private notes inside an ordinary picture. AES-256 encryption, done entirely in this browser tab. Nothing is uploaded, nothing is stored, and without your passphrase the picture is just a picture.
How it works
1 · Encrypt
Your notes are compressed and locked with AES-256-GCM. The key comes from your passphrase, stretched 600,000 times so guessing is slow.
2 · Hide
The locked bytes go into the lowest bit of each pixel's colour. A change of 1 in 255 is invisible.
3 · Keep
Save the PNG anywhere: a drive, an email, a USB stick. Open it here with the passphrase. A wrong passphrase fails loudly; it never shows garbage.
Building something that handles private data? Everything Is 9 builds it private from day one.