FastSend

FastSend is a file transfer tool that runs in the browser and uses WebRTC to send files directly between two devices. Because the transfer is peer to peer and encrypted, the data does not need to be uploaded to and downloaded from a central file host, which suits quick sharing between your own devices or with someone nearby.

It supports sending single files and whole folders, and directory synchronization, which relies on the modern File System API and HTTPS. On a local network it optimizes the connection for faster transfers. The interface is simple, available in Chinese and English, and can be installed as a progressive web app. A public instance is available online, and the README warns that some networks may block peer-to-peer connections.

The project is built with Nuxt 4, Vue, Pinia and TypeScript, with a Nitro server handling WebSocket signaling, and it is licensed under MIT. It can be self-hosted with Docker or Docker Compose and should sit behind a reverse proxy in production. The README notes that the official Docker Hub image is shouchenicu/fastsend and warns about third-party images.