DecentPaste

Universal Clipboard for Every Device — A cross-platform clipboard sharing app that works like Apple's Universal Clipboard, but for all platforms.

🆕 New Release — Actively developed with community feedback. Share your ideas!

What is DecentPaste?

DecentPaste lets you seamlessly share your clipboard between all your devices over your local network. Copy on your laptop, paste on your phone. No cloud servers, no accounts, no subscriptions — just secure, peer-to-peer clipboard sync.

Key Features

• Cross-Platform — Works on Windows, macOS, Linux, Android, and iOS
• Decentralized — No central server; devices connect directly via P2P
• Auto-Discovery — Devices find each other automatically on your local network
• End-to-End Encrypted — AES-256-GCM encryption; only paired devices can read your clipboard
• Secure Pairing — 6-digit PIN verification with X25519 key exchange
• Lightweight — Small binary size (~15MB) thanks to Tauri
• Open Source — Apache 2.0 licensed

How It Works

1. Discovery: Devices find each other using mDNS
2. Pairing: One-time secure pairing with PIN verification establishes a shared secret
3. Sync: Clipboard changes are encrypted and broadcast to paired devices
4. Receive: Paired devices decrypt and update their clipboard automatically

Installation

Pre-built Binaries

Download the latest release for your platform:

Build from Source

Prerequisites: - Rust (1.70+) - Node.js (18+) - Yarn - Platform-specific requirements for Tauri

# Clone the repository
git clone https://github.com/decentpaste/decentpaste.git
cd decentpaste/decentpaste-app

# Install dependencies
yarn install

# Run in development mode
yarn tauri dev

# Build for production
yarn tauri build

Usage

Getting Started

1. Install DecentPaste on two or more devices
2. Ensure devices are on the same local network (Wi-Fi/LAN)
3. Open the app — devices will discover each other automatically
4. Pair devices using the 6-digit PIN (out-of-band MITM protection)
5. Copy on one device, paste on another!

Pairing Devices

1. On Device A: Go to Devices → Click Pair next to the discovered device
2. On Device B: Accept the pairing request
3. Both devices display a 6-digit PIN — verify they match
4. Confirm on Device A
5. Done! Devices are now paired and will sync automatically

Mobile Usage

On Android/iOS, clipboard access is restricted for privacy. To share content:

Direct share: Select text in any app → Share → Choose DecentPaste Sent directly to paired devices — no clipboard involved.

Note: Keep the app open on both devices during pairing (background connections are not supported).

Security

📖 Read the full Security Documentation →

Includes architecture diagrams, threat model, and vulnerability reporting.

DecentPaste is designed with security as a priority:

Key security properties: - Local-only: Data never leaves your network (mDNS discovery) - Zero-knowledge pairing: 6-digit PIN + ECDH key exchange - Per-peer encryption: Each device pair has a unique key - Auto-lock: Vault locks after configurable inactivity

Tech Stack

Development

Running Two Instances (Testing)

# Terminal 1 - desktop
cd decentpaste-app
yarn tauri dev

# Terminal 2 - android
yarn tauri android dev

# Terminal 3 - iOS
yarn tauri ios dev

Architecture Documentation

See ARCHITECTURE.md for detailed technical documentation.

Project Status

DecentPaste — actively developed.

The local-only design (mDNS) significantly limits the attack surface compared to cloud-based alternatives. Security issues? Open an issue — I respond promptly.

Roadmap

• [ ] Image and file clipboard support
• [ ] Internet relay for cross-network sync (leverages libp2p Kademlia DHT)
• [x] Hardware-backed vault security (TEE/Secure Enclave/Keychain)
• [x] Zeroization: Keys cleared from memory on lock
• [x] Encrypted vault storage
• [x] Persistent clipboard history
• [x] System tray improvements

Contributing

Contributions are welcome! Please read our contributing guidelines before submitting PRs.

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'use conventional commits')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is licensed under the Apache License 2.0 — see the LICENSE file for details.

Trademark

"DecentPaste" and the DecentPaste logo are trademarks. See TRADEMARK.md for usage guidelines.

Note: The Apache 2.0 license grants rights to the code but does not grant rights to use the DecentPaste trademarks or logos.

Acknowledgments

• Tauri — For the amazing cross-platform framework
• libp2p — For decentralized networking
• RustCrypto — For cryptographic primitives

Star History

DecentPaste — Your clipboard, everywhere.

GitHub · Issues · Releases