Steganographic Social Networking

Send messages hidden in images across any platform using Nostr. Text messages, social media, email—wherever images go, Stegstr data travels.

Download for macOS .dmg Download for Windows .exe Download for Linux .deb / .AppImage Android APK
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Features

🔒

No Registration Required

Get started in minutes with an anonymous local identity. No account needed to embed and detect messages.

📦

Works Offline

Detect and Embed work without any network connection. Share images via any medium—text, email, social.

💻

Cross-Platform

Desktop (macOS, Windows, Linux) and Android. Same format everywhere—images work across all platforms.

🔐

Private & Secure

Data stored locally. Encrypted bundles in images. Optional Nostr login when you want relay sync.

📚

Open Source

Code is open-source on GitHub. MIT licensed. Build and contribute.

⚡

Built on Nostr

A Nostr client with steganographic transport. Compatible with Nostr events and NIPs.

How It Works

With Stegstr, you can share Nostr-style posts and messages by hiding them inside ordinary images.

1

Log in

Use your Nostr key or stay anonymous. No internet required.

2

Create a post

Write your message in the feed. Posts get the Stegstr branding suffix.

3

Embed in image

Pick a cover image. Stegstr encodes your feed into the PNG and saves it.

4

Share anywhere

Send the image via text, email, social media—any medium that transfers images.

Get Started

Join the Community

GitHub Nostr Nostr Integration Nostr NIPs Wiki

Stegstr is an open-source project to facilitate cross-platform, cross-medium networking via steganographic images. Contributions welcome—see the GitHub repo.