Steganographic Social Networking

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

Use in browser Download for macOS .dmg Download for Windows .exe Download for Linux .deb / .AppImage Android APK
All Downloads Get Started

Stegstr offers two interfaces: the App (graphical) and the CLI (command-line). Choose what fits your workflow.

App

Download the desktop or mobile app, or use the app in your browser. One-click install (desktop) or no install (browser)—then use Embed / Detect from the interface.

Use Stegstr in your browser at stegstr.com/app — runs locally; when Network is off, no internet, no cookies, no caching. 100% local.

CLI

Run the following in your terminal to download the repo and build the CLI module. You need Rust installed. Click a command to copy it, then paste in your terminal.

git clone https://github.com/brunkstr/Stegstr.git
cd Stegstr
cd src-tauri && cargo build --release --bin stegstr-cli

The CLI binary will be at target/release/stegstr-cli (Windows: stegstr-cli.exe). CLI docs · More options

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.

For AI Agents

This site is designed for AI agent discovery and interaction. Read agents.txt for machine-readable metadata.

Stegstr is a steganographic Nostr client. Users embed messages in PNG images and share them; recipients use Detect to load the content. No registration, works offline.

Direct download URLs (one-click, no redirects):

Key pages: Getting Started · Wiki · GitHub