About FreeAirShare

What it is

FreeAirShare is a free, browser-based tool for sharing files and short text messages between devices on the same local WiFi network. Open it on two devices connected to the same router, drop a file, and the other device can download it immediately — no account, no app install, no cloud upload.

The problem it solves

Getting a file from one device to another on the same desk is surprisingly awkward. Common workarounds include emailing the file to yourself, uploading to a cloud service and downloading on the other device, using a USB cable, or relying on platform-specific tools like AirDrop that only work within Apple's ecosystem.

Each of those has friction: email has size limits, cloud upload is slow for large files and requires an account, USB cables are not always handy, and AirDrop excludes Android and Windows users. FreeAirShare removes that friction for the specific case where both devices are already on the same WiFi network.

How it works

FreeAirShare uses WebRTC — the same browser technology used for video calls — to open a direct data channel between two browsers. Once the connection is established, file data flows directly between the two devices without touching any intermediate server.

The server component is minimal: it stores small discovery records (peer ID, file count, display name) so devices on the same subnet can find each other. When you click Download, your browser connects directly to the sharer's browser and the file transfers over that local connection. The server never sees the file content.

The Text feature works slightly differently — short messages are stored in server memory so any device on the network can read them without needing a direct peer connection. Messages expire automatically after 10 minutes.

What it is not

  • It does not work between devices on different networks
  • It is not a cloud storage service — closing the tab ends the share
  • It does not encrypt transfers end-to-end beyond the WebRTC data channel
  • It is not suitable for sharing sensitive documents on public WiFi

Built by

FreeAirShare is an independent project. It is built and maintained by the same developer behind FreeMediaTools.online — a collection of free browser-based media tools (video compression, image conversion, PDF tools, and more).