Cross-device file transfer that respects your privacy.
FileIO is a privacy-first browser tool for cross-device file transfer and online clipboard sync. Send files from your phone to your PC (or the other way around) instantly — no app install, no signup, no cloud upload. The fast, free AirDrop alternative for Windows, iPhone, Android, and Mac.
Privacy-First File Transfer
Every transfer runs end-to-end encrypted over WebRTC peer-to-peer, with QR-code pairing in the browser. Files and text never touch our servers. Use it as a wireless file transfer tool, an online clipboard between phone and PC, or a quick way to send large videos and documents across devices.
Free for Everyone
No login walls, no feature gates, no hidden fees. Cross-device file transfer should be open to everyone — every browser, every platform.
Open & Transparent
Open architecture. AES-256-GCM encryption, WebRTC P2P, and zero-knowledge design — the security model is auditable and the code is inspectable.
No-Noise, No App Install
Open the page on phone and PC, scan a QR code, drop a file or paste a snippet, and it is sent. No popups, no upsells, no app to install. The same workflow as a shared online clipboard or AirDrop, but in your browser.
Two tools, two privacy models
FileIO offers two ways to move a file depending on whether both devices are online together.
Text & File Transfer
Direct WebRTC peer-to-peer between phone and PC. Files and text never touch our servers — the signaling host only relays the pairing handshake. Best when both sides are online at the same time.
Open tool arrow_right_altQuick Share
Async file drop. Upload now, share the link or QR code, recipient downloads later. Files sit on Cloudflare R2 for up to 3 days (single-use by default) and are permanently deleted after first download or on expiry.
Open tool arrow_right_altHow Your Transfer Stays Safe
All cross-device file and text transfers use AES-256-GCM end-to-end encryption over WebRTC peer-to-peer connections. Pairing happens via QR code in the browser. Sessions are ephemeral and we do not log, store, or analyze the content you send.