I built Iriszip, an encrypted P2P file transfer that runs in the browser

Description and use

Iriszip is a browser‑based, end‑to‑end encrypted P2P file transfer that requires no app installation or server‑side persistence.

Problem

Need a simple, app‑free way to transfer files between devices without uploading to a server or creating accounts.

Outcome

Iriszip provides a zero‑install, end‑to‑end encrypted file transfer solution that works over LAN at full speed and over the internet via WebRTC, with optional relay and no server‑side persistence.

Workflow

• Open iriszip.com on both devices
• Scan QR code or enter 9‑digit pairing code
• Select file or text to send
• Transfer occurs via direct WebRTC or relay if needed
• Data remains encrypted and is discarded after session

Evidence

No file or message content is persisted on the server. On relayed connections, encrypted data only passes through memory, and session state is discarded when the session ends.

Source

Iriszip uses end‑to‑end encryption, and the cryptographic protocol design went through an independent security review.

Source