Detect and extract LSB-encoded messages from PNG and BMP carriers. Browser-only forensic tool.
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 that may contain LSB-hidden data.
The tool reads least-significant bits across all channels and recovers the embedded payload.
View the extracted text or download as a file.
0 bytes uploaded. Steganography Decoder 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.
Only LSB encoding (the most common amateur method). Advanced methods like F5 or steghide need dedicated tools.
JPEG's lossy compression destroys LSB encoding. Steg only survives lossless formats (PNG, BMP, TIFF).