> ## Documentation Index
> Fetch the complete documentation index at: https://docsdrop.erikraft.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> ErikrafT Drop is a browser-based P2P file sharing system using WebRTC technology for direct device-to-device transfers.

# ErikrafT Drop Overview

ErikrafT Drop is a progressive web application that enables secure peer-to-peer file sharing directly between web browsers without requiring intermediate servers. Built on WebRTC technology, it provides encrypted, real-time file transfers with automatic device discovery on local networks.

## Key Features

* **Direct P2P Transfers**: Files are transferred directly between devices using WebRTC DataChannels
* **Local Network Discovery**: Automatic detection of devices on the same network
* **Device Pairing**: Persistent device connections using encrypted room secrets
* **QR Code Pairing**: Quick device pairing using QR codes and 6-digit keys
* **Cross-Platform**: Works on all modern browsers with WebRTC support
* **Progressive Web App**: Installable as a native application
* **No File Size Limits**: Limited only by browser memory and network constraints
* **Real-time Chat**: Built-in messaging functionality
* **WebSocket Fallback**: Alternative transfer method when WebRTC is unavailable

## Technology Stack

* **Frontend**: Vanilla JavaScript with WebRTC API
* **Backend**: Node.js with Express and WebSocket (ws) server
* **Storage**: IndexedDB for persistent device pairing data
* **Protocol**: WebRTC for P2P, WebSocket for signaling
* **Security**: DTLS/SRTP encryption provided by WebRTC

## Use Cases

* **Local File Sharing**: Quickly share files between devices on the same network
* **Cross-Platform Transfer**: Share between iOS, Android, Windows, macOS, and Linux
* **No Internet Required**: Works entirely on local networks
* **Temporary Sharing**: No account registration or setup required
* **Secure Transfers**: End-to-end encryption via WebRTC

## Browser Support

ErikrafT Drop requires modern browsers with WebRTC support:

* Chrome 23+
* Firefox 22+
* Safari 11+
* Edge 79+

The application automatically detects WebRTC capabilities and falls back to WebSocket-based transfers when necessary.