StegoTool Pro

StegoTool Pro is a steganography application — desktop (Windows) and Android — for hiding and extracting encrypted data inside image, audio, and video files, entirely on your own device, with no cloud dependency. Both apps share the same underlying algorithms and produce interoperable files: encode on one, decode on the other.

It combines a modern UI with AES-256 encryption, dual-payload plausible deniability, live capacity checking, and multiple embedding techniques chosen for different needs: maximum capacity, or surviving being re-compressed after you send it.

💡 Why StegoTool Pro? Most basic steganography tools stop at "hide a file in an image." StegoTool Pro focuses on the two things that actually break in practice:

Capacity that's honest, not optimistic. The app checks your exact payload against your exact cover, per technique, before running — not a generic size estimate. Data that survives real-world handling. Photos and videos get re-compressed the moment they're uploaded to almost anywhere. StegoTool Pro has a technique built specifically to survive that, alongside a high-capacity technique for when the file won't be touched.

✨ Features 🖼️ Image techniques: LSB (PNG/BMP, max capacity), PVD (grayscale), DCT-coefficient embedding for JPEG (native, high-capacity), and Spread-Spectrum (survives re-compression, with a lower-capacity-requirement "Compact" variant) 🎧 Audio: LSB embedding for WAV files 🎬 Video: lossless LSB (maximum capacity, needs the file untouched afterward) and Spread-Spectrum (survives a real H.264 re-encode — e.g. platforms that transcode what you upload) 🕵️ Decoy password support — a second, independently-encrypted payload for plausible deniability 🔒 AES-256-CBC + scrypt encryption with SHA-256 integrity verification 📊 Real capacity checking before you encode — exact numbers, not guesses, with concrete suggestions if your payload doesn't fit 📦 Multi-carrier splitting — spread one payload across several carrier files