Hide a text payload inside a PNG or BMP carrier image using LSB steganography. Browser-only.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Drop a PNG or BMP carrier image and type the secret text.
Each character bit is encoded into the least-significant bit of pixel channels.
Download the carrier image — visually identical, but containing your hidden message.
0 bytes uploaded. Steganography Encoder runs entirely in your browser. Files, passwords, and PGP private keys never leave your device. No analytics fire during processing — only after you opt-in to dashboard audit logging.
Up to ~1/8 of the pixel count in bytes. A 1024×1024 image holds ~128 KB of text.
Yes. Always download as PNG or BMP — never re-save the carrier as JPEG.